/*
 * Copyright (c) 2019-2025, WSO2 LLC. (http://www.wso2.com).
 *
 * WSO2 LLC. licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.wso2.carbon.identity.api.server.idp.v1.core;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.gson.Gson;
import org.apache.commons.beanutils.BeanUtils;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.ArrayUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.cxf.jaxrs.ext.multipart.Attachment;
import org.apache.cxf.jaxrs.ext.search.ConditionType;
import org.apache.cxf.jaxrs.ext.search.PrimitiveStatement;
import org.apache.cxf.jaxrs.ext.search.SearchCondition;
import org.apache.cxf.jaxrs.ext.search.SearchContext;
import org.wso2.carbon.identity.api.server.common.ContextLoader;
import org.wso2.carbon.identity.api.server.common.FileContent;
import org.wso2.carbon.identity.api.server.common.Util;
import org.wso2.carbon.identity.api.server.common.error.APIError;
import org.wso2.carbon.identity.api.server.common.error.ErrorResponse;
import org.wso2.carbon.identity.api.server.idp.common.Constants;
import org.wso2.carbon.identity.api.server.idp.v1.impl.FederatedAuthenticatorConfigBuilderFactory;
import org.wso2.carbon.identity.api.server.idp.v1.model.AssociationRequest;
import org.wso2.carbon.identity.api.server.idp.v1.model.AssociationResponse;
import org.wso2.carbon.identity.api.server.idp.v1.model.Certificate;
import org.wso2.carbon.identity.api.server.idp.v1.model.Claim;
import org.wso2.carbon.identity.api.server.idp.v1.model.Claims;
import org.wso2.carbon.identity.api.server.idp.v1.model.ConnectedApp;
import org.wso2.carbon.identity.api.server.idp.v1.model.ConnectedApps;
import org.wso2.carbon.identity.api.server.idp.v1.model.FederatedAuthenticator;
import org.wso2.carbon.identity.api.server.idp.v1.model.FederatedAuthenticatorListItem;
import org.wso2.carbon.identity.api.server.idp.v1.model.FederatedAuthenticatorListResponse;
import org.wso2.carbon.identity.api.server.idp.v1.model.FederatedAuthenticatorPUTRequest;
import org.wso2.carbon.identity.api.server.idp.v1.model.FederatedAuthenticatorRequest;
import org.wso2.carbon.identity.api.server.idp.v1.model.IdPGroup;
import org.wso2.carbon.identity.api.server.idp.v1.model.IdentityProviderListItem;
import org.wso2.carbon.identity.api.server.idp.v1.model.IdentityProviderListResponse;
import org.wso2.carbon.identity.api.server.idp.v1.model.IdentityProviderPOSTRequest;
import org.wso2.carbon.identity.api.server.idp.v1.model.IdentityProviderResponse;
import org.wso2.carbon.identity.api.server.idp.v1.model.IdentityProviderTemplate;
import org.wso2.carbon.identity.api.server.idp.v1.model.IdentityProviderTemplateListItem;
import org.wso2.carbon.identity.api.server.idp.v1.model.IdentityProviderTemplateListResponse;
import org.wso2.carbon.identity.api.server.idp.v1.model.JustInTimeProvisioning;
import org.wso2.carbon.identity.api.server.idp.v1.model.Link;
import org.wso2.carbon.identity.api.server.idp.v1.model.MetaFederatedAuthenticator;
import org.wso2.carbon.identity.api.server.idp.v1.model.MetaFederatedAuthenticatorListItem;
import org.wso2.carbon.identity.api.server.idp.v1.model.MetaOutboundConnector;
import org.wso2.carbon.identity.api.server.idp.v1.model.MetaOutboundConnectorListItem;
import org.wso2.carbon.identity.api.server.idp.v1.model.MetaProperty;
import org.wso2.carbon.identity.api.server.idp.v1.model.OutboundConnector;
import org.wso2.carbon.identity.api.server.idp.v1.model.OutboundConnectorListItem;
import org.wso2.carbon.identity.api.server.idp.v1.model.OutboundConnectorListResponse;
import org.wso2.carbon.identity.api.server.idp.v1.model.OutboundConnectorPUTRequest;
import org.wso2.carbon.identity.api.server.idp.v1.model.OutboundProvisioningRequest;
import org.wso2.carbon.identity.api.server.idp.v1.model.Patch;
import org.wso2.carbon.identity.api.server.idp.v1.model.ProvisioningClaim;
import org.wso2.carbon.identity.api.server.idp.v1.model.ProvisioningResponse;
import org.wso2.carbon.identity.api.server.idp.v1.model.Roles;
import org.wso2.carbon.identity.application.authentication.framework.util.FrameworkConstants;
import org.wso2.carbon.identity.application.common.ApplicationAuthenticatorService;
import org.wso2.carbon.identity.application.common.model.CertificateInfo;
import org.wso2.carbon.identity.application.common.model.ClaimConfig;
import org.wso2.carbon.identity.application.common.model.ClaimMapping;
import org.wso2.carbon.identity.application.common.model.FederatedAssociationConfig;
import org.wso2.carbon.identity.application.common.model.FederatedAuthenticatorConfig;
import org.wso2.carbon.identity.application.common.model.IdentityProvider;
import org.wso2.carbon.identity.application.common.model.IdentityProviderProperty;
import org.wso2.carbon.identity.application.common.model.JustInTimeProvisioningConfig;
import org.wso2.carbon.identity.application.common.model.LocalRole;
import org.wso2.carbon.identity.application.common.model.PermissionsAndRoleConfig;
import org.wso2.carbon.identity.application.common.model.Property;
import org.wso2.carbon.identity.application.common.model.ProvisioningConnectorConfig;
import org.wso2.carbon.identity.application.common.model.RoleMapping;
import org.wso2.carbon.identity.application.common.model.SubProperty;
import org.wso2.carbon.identity.application.common.model.UserDefinedFederatedAuthenticatorConfig;
import org.wso2.carbon.identity.application.common.util.IdentityApplicationConstants;
import org.wso2.carbon.identity.base.AuthenticatorPropertyConstants.DefinedByType;
import org.wso2.carbon.identity.claim.metadata.mgt.ClaimMetadataManagementService;
import org.wso2.carbon.identity.claim.metadata.mgt.exception.ClaimMetadataException;
import org.wso2.carbon.identity.claim.metadata.mgt.model.LocalClaim;
import org.wso2.carbon.identity.configuration.mgt.core.model.ResourceSearchBean;
import org.wso2.carbon.identity.configuration.mgt.core.search.ComplexCondition;
import org.wso2.carbon.identity.configuration.mgt.core.search.Condition;
import org.wso2.carbon.identity.configuration.mgt.core.search.PrimitiveCondition;
import org.wso2.carbon.identity.core.util.IdentityTenantUtil;
import org.wso2.carbon.identity.core.util.IdentityUtil;
import org.wso2.carbon.identity.template.mgt.TemplateManager;
import org.wso2.carbon.identity.template.mgt.TemplateMgtConstants;
import org.wso2.carbon.identity.template.mgt.exception.TemplateManagementClientException;
import org.wso2.carbon.identity.template.mgt.exception.TemplateManagementException;
import org.wso2.carbon.identity.template.mgt.exception.TemplateManagementServerException;
import org.wso2.carbon.identity.template.mgt.model.Template;
import org.wso2.carbon.idp.mgt.IdentityProviderManagementClientException;
import org.wso2.carbon.idp.mgt.IdentityProviderManagementException;
import org.wso2.carbon.idp.mgt.IdentityProviderManagementServerException;
import org.wso2.carbon.idp.mgt.IdentityProviderManager;
import org.wso2.carbon.idp.mgt.dao.IdPManagementDAO;
import org.wso2.carbon.idp.mgt.model.ConnectedAppsResult;
import org.wso2.carbon.idp.mgt.model.IdpSearchResult;
import org.yaml.snakeyaml.DumperOptions;
import org.yaml.snakeyaml.LoaderOptions;
import org.yaml.snakeyaml.TypeDescription;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.Constructor;
import org.yaml.snakeyaml.error.YAMLException;
import org.yaml.snakeyaml.inspector.TagInspector;
import org.yaml.snakeyaml.inspector.TrustedPrefixesTagInspector;
import org.yaml.snakeyaml.representer.Representer;

import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.InvocationTargetException;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Base64;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.function.Function;
import java.util.stream.Collectors;

import javax.ws.rs.core.Response;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

import static org.wso2.carbon.identity.api.server.common.Constants.ERROR_CODE_RESOURCE_LIMIT_REACHED;
import static org.wso2.carbon.identity.api.server.common.Constants.JSON_FILE_EXTENSION;
import static org.wso2.carbon.identity.api.server.common.Constants.MASKING_VALUE;
import static org.wso2.carbon.identity.api.server.common.Constants.MEDIA_TYPE_JSON;
import static org.wso2.carbon.identity.api.server.common.Constants.MEDIA_TYPE_XML;
import static org.wso2.carbon.identity.api.server.common.Constants.MEDIA_TYPE_YAML;
import static org.wso2.carbon.identity.api.server.common.Constants.V1_API_PATH_COMPONENT;
import static org.wso2.carbon.identity.api.server.common.Constants.XML_FILE_EXTENSION;
import static org.wso2.carbon.identity.api.server.common.Constants.YAML_FILE_EXTENSION;
import static org.wso2.carbon.identity.api.server.common.Util.base64URLDecode;
import static org.wso2.carbon.identity.api.server.common.Util.base64URLEncode;
import static org.wso2.carbon.identity.api.server.idp.common.Constants.ErrorMessage.ERROR_CODE_IDP_LIMIT_REACHED;
import static org.wso2.carbon.identity.api.server.idp.common.Constants.GOOGLE_PRIVATE_KEY;
import static org.wso2.carbon.identity.api.server.idp.common.Constants.IDP_PATH_COMPONENT;
import static org.wso2.carbon.identity.api.server.idp.common.Constants.IDP_TEMPLATE_PATH_COMPONENT;
import static org.wso2.carbon.identity.api.server.idp.common.Constants.PROP_CATEGORY;
import static org.wso2.carbon.identity.api.server.idp.common.Constants.PROP_DISPLAY_ORDER;
import static org.wso2.carbon.identity.api.server.idp.common.Constants.PROP_SERVICES;
import static org.wso2.carbon.identity.api.server.idp.common.Constants.SERV_AUTHENTICATION;
import static org.wso2.carbon.identity.api.server.idp.common.Constants.SERV_PROVISIONING;
import static org.wso2.carbon.identity.api.server.idp.common.Constants.TEMPLATE_MGT_ERROR_CODE_DELIMITER;
import static org.wso2.carbon.identity.application.common.util.IdentityApplicationConstants.RESIDENT_IDP_RESERVED_NAME;
import static org.wso2.carbon.identity.configuration.mgt.core.search.constant.ConditionType.PrimitiveOperator.EQUALS;

/**
 * Call internal osgi services to perform server identity provider related operations.
 */
public class ServerIdpManagementService {

    private final IdentityProviderManager identityProviderManager;
    private final ClaimMetadataManagementService claimMetadataManagementService;
    private final TemplateManager templateManager;

    private static final Log log = LogFactory.getLog(ServerIdpManagementService.class);

    public ServerIdpManagementService(IdentityProviderManager identityProviderManager, TemplateManager templateManager,
                                      ClaimMetadataManagementService claimMetadataManagementService) {

        this.identityProviderManager = identityProviderManager;
        this.templateManager = templateManager;
        this.claimMetadataManagementService = claimMetadataManagementService;
    }

    /**
     * Get list of identity providers.
     *
     * @param requiredAttributes Required attributes in the IDP list response.
     * @param limit      Items per page.
     * @param offset     Offset.
     * @param filter     Filter string. E.g. filter="name" sw "google" and "isEnabled" eq "true"
     * @param sortBy     Attribute to sort the IDPs by. E.g. name
     * @param sortOrder  Order in which IDPs should be sorted. Can be either ASC or DESC.
     * @return IdentityProviderListResponse.
     */
    public IdentityProviderListResponse getIDPs(String requiredAttributes, Integer limit, Integer offset, String filter,
                                                String sortBy, String sortOrder) {

        try {
            List<String> requestedAttributeList = null;
            if (StringUtils.isNotBlank(requiredAttributes)) {
                requestedAttributeList = new ArrayList<>(Arrays.asList(requiredAttributes.split(",")));
            }
            return createIDPListResponse(identityProviderManager.getIdPs(limit, offset, filter, sortOrder, sortBy,
                            ContextLoader.getTenantDomainFromContext(), requestedAttributeList),
                    requestedAttributeList);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_LISTING_IDPS, null);
        }
    }

    /**
     * Get list of identity providers.
     *
     * @param requiredAttributes Required attributes in the IDP list response.
     * @param limit      Items per page.
     * @param offset     Offset.
     * @param filter     Filter string. E.g. filter="name" sw "google" and "isEnabled" eq "true"
     * @param sortBy     Attribute to sort the IDPs by. E.g. name
     * @param sortOrder  Order in which IDPs should be sorted. Can be either ASC or DESC.
     * @return IdentityProviderListResponse.
     */
    public IdentityProviderListResponse getTrustedTokenIssuers(String requiredAttributes, Integer limit, Integer offset,
                                                      String filter, String sortBy, String sortOrder) {

        try {
            List<String> requestedAttributeList = null;
            if (StringUtils.isNotBlank(requiredAttributes)) {
                requestedAttributeList = new ArrayList<>(Arrays.asList(requiredAttributes.split(",")));
            }
            return createIDPListResponse(identityProviderManager.getTrustedTokenIssuers(limit, offset, filter, sortBy,
                    sortOrder, ContextLoader.getTenantDomainFromContext(), requestedAttributeList),
                            requestedAttributeList);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_LISTING_TRUSTED_TOKEN_ISSUERS, null);
        }
    }

    /**
     * Add an identity provider.
     *
     * @param identityProviderPOSTRequest identityProviderPOSTRequest.
     * @return IdentityProviderResponse.
     */
    public IdentityProviderResponse addIDP(IdentityProviderPOSTRequest identityProviderPOSTRequest) {

        IdentityProvider identityProvider;
        try {
            validateSystemReservedIDP(identityProviderPOSTRequest.getName());
            identityProvider = identityProviderManager.addIdPWithResourceId(createIDP(identityProviderPOSTRequest),
                    ContextLoader.getTenantDomainFromContext());
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_ADDING_IDP, null);
        }
        return createIDPResponse(identityProvider);
    }

    /**
     * Get an identity provider identified by resource ID.
     *
     * @param idpId IdP resource ID.
     * @return IdentityProviderGetResponse.
     */
    public IdentityProviderResponse getIDP(String idpId) {

        try {
            IdentityProvider identityProvider = identityProviderManager.getIdPByResourceId(idpId,
                            ContextLoader.getTenantDomainFromContext(), true);
            if (identityProvider == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            return createIDPResponse(identityProvider);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP, idpId);
        }
    }

    /**
     * Updates only root level attributes of IDP.
     *
     * @param identityProviderId Identity Provider resource ID.
     * @param patchRequest       Patch request in Json Patch notation See
     *                           <a href="https://tools.ietf.org/html/rfc6902">https://tools.ietf
     *                           .org/html/rfc6902</a>.
     *                           We support only Patch 'replace' operation on root level attributes of an Identity
     *                           Provider.
     */
    public IdentityProviderResponse patchIDP(String identityProviderId, List<Patch> patchRequest) {

        try {
            IdentityProvider identityProvider = identityProviderManager.getIdPByResourceId(identityProviderId,
                    ContextLoader.getTenantDomainFromContext(), true);
            if (identityProvider == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        identityProviderId);
            }
            IdentityProvider idpToUpdate = createIdPClone(identityProvider);
            processPatchRequest(patchRequest, idpToUpdate);
            validateSystemReservedIDP(idpToUpdate.getIdentityProviderName());
            IdentityProvider updatedIdP = identityProviderManager.updateIdPByResourceId(identityProviderId, idpToUpdate,
                    ContextLoader.getTenantDomainFromContext());
            return createIDPResponse(updatedIdP);

        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP, identityProviderId);
        }
    }

    /**
     * Delete an Identity Provider.
     *
     * @param identityProviderId Identity Provider resource ID.
     */
    public void deleteIDP(String identityProviderId) {

        try {
            identityProviderManager.deleteIdPByResourceId(identityProviderId,
                    ContextLoader.getTenantDomainFromContext());
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_DELETING_IDP, identityProviderId);
        }
    }

    /**
     * Forcefully delete an Identity Provider. When force is set to true, IDP will be forcefully deleted even-though
     * it is being referred by service providers.
     *
     * @param identityProviderId Identity Provider resource ID.
     */
    public void forceDeleteIDP(String identityProviderId) {

        try {
            identityProviderManager.forceDeleteIdpByResourceId(identityProviderId,
                    ContextLoader.getTenantDomainFromContext());
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_DELETING_IDP, identityProviderId);
        }
    }

    /**
     * Export an identity provider identified by the Identity Provider ID, in the given format.
     *
     * @param idpId         ID of the identity provider to be exported.
     * @param excludeSecrets If true, all hashed or encrypted secrets will be masked.
     * @param fileType      The format of the exported string.
     * @return FileContent object of the identity provider in the requested format.
     */
    public FileContent exportIDP(String idpId, boolean excludeSecrets, String fileType) {

        if (log.isDebugEnabled()) {
            log.debug("Exporting identity provider from idp ID " + idpId);
        }
        if (StringUtils.isBlank(fileType)) {
            throw new UnsupportedOperationException("No valid media type found");
        }

        IdentityProvider identityProvider;
        IdentityProvider idpToExport;
        IdPManagementDAO dao = new IdPManagementDAO();
        try {
            String tenantDomain = ContextLoader.getTenantDomainFromContext();
            identityProvider = RESIDENT_IDP_RESERVED_NAME.equals(idpId) ? dao.getIdPByName(null,
                    RESIDENT_IDP_RESERVED_NAME, IdentityTenantUtil.getTenantId(tenantDomain), tenantDomain) :
                    identityProviderManager.getIdPByResourceId(idpId, tenantDomain, true);
            idpToExport = createIdPClone(identityProvider);
            if (idpToExport == null) {
                throw handleException(Response.Status.NOT_FOUND,
                        Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND, idpId);
            }
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP, idpId);
        }

        if (excludeSecrets) {
            removeSecretsFromIDP(idpToExport);
        }

        FileContent fileContent;
        try {
            fileContent = generateFileFromModel(fileType, idpToExport);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_EXPORTING_IDP, idpId);
        }

        if (log.isDebugEnabled()) {
            log.debug(String.format("Successfully exported IdP: %s as a file type of %s.",
                    identityProvider.getIdentityProviderName(), fileType));
        }
        return fileContent;
    }

    /**
     * Create a new identity provider by importing an XML, YAML or JSON configuration file.
     *
     * @param fileInputStream File to be imported as an input stream.
     * @param fileDetail      File details.
     * @return Unique identifier of the created identity provider.
     */
    public String importIDP(InputStream fileInputStream, Attachment fileDetail) {

        IdentityProvider identityProvider;
        try {
            String tenantDomain = ContextLoader.getTenantDomainFromContext();
            identityProvider = identityProviderManager.addIdPWithResourceId(
                    getIDPFromFile(fileInputStream, fileDetail), tenantDomain);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_IMPORTING_IDP, null);
        }
        return identityProvider.getResourceId();
    }

    /**
     * Update an existing identity provider from an XML, YAML or JSON configuration file.
     *
     * @param identityProviderId Resource ID of the Identity Provider to be updated.
     * @param fileInputStream    File to be imported as an input stream.
     * @param fileDetail         File details.
     */
    public void updateIDPFromFile(String identityProviderId, InputStream fileInputStream, Attachment fileDetail) {

        IdentityProvider identityProvider;
        try {
            identityProvider = getIDPFromFile(fileInputStream, fileDetail);
            String tenantDomain = ContextLoader.getTenantDomainFromContext();
            if (RESIDENT_IDP_RESERVED_NAME.equals(identityProviderId)) {
                identityProviderManager.updateResidentIdP(identityProvider, tenantDomain);
            } else {
                identityProviderManager.updateIdPByResourceId(identityProviderId, identityProvider, tenantDomain);
            }
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP, null);
        }
    }

    /**
     * Get meta information about Identity Provider's federated authenticators.
     *
     * @return list of meta federated authenticators.
     */
    public List<MetaFederatedAuthenticatorListItem> getMetaFederatedAuthenticators() {

        List<MetaFederatedAuthenticatorListItem> metaAuthenticators = new ArrayList<>();
        try {
            FederatedAuthenticatorConfig[] authenticatorConfigs = identityProviderManager
                    .getAllFederatedAuthenticators();
            if (ArrayUtils.isNotEmpty(authenticatorConfigs)) {
                for (FederatedAuthenticatorConfig authenticatorConfig : authenticatorConfigs) {
                    MetaFederatedAuthenticatorListItem metaFederatedAuthenticator =
                            createMetaFederatedAuthenticatorListItem(authenticatorConfig);
                    metaAuthenticators.add(metaFederatedAuthenticator);
                }
            }
            return metaAuthenticators;
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_META_AUTHENTICATORS, null);
        }
    }

    /**
     * Get meta information about a specific federated authenticator supported by the IDPs.
     *
     * @param id Federated authenticator ID.
     * @return MetaFederatedAuthenticator.
     */
    public MetaFederatedAuthenticator getMetaFederatedAuthenticator(String id) {

        MetaFederatedAuthenticator authenticator = null;
        try {
            String authenticatorName = decodeAuthenticatorID(id);
            FederatedAuthenticatorConfig[] authenticatorConfigs = identityProviderManager
                    .getAllFederatedAuthenticators();
            if (ArrayUtils.isNotEmpty(authenticatorConfigs)) {
                for (FederatedAuthenticatorConfig authenticatorConfig : authenticatorConfigs) {
                    if (StringUtils.equals(authenticatorConfig.getName(), authenticatorName)) {
                        authenticator = createMetaFederatedAuthenticator(authenticatorConfig);
                        break;
                    }
                }
            }
            return authenticator;
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_META_AUTHENTICATOR, id);
        }
    }

    /**
     * Decode authenticator ID.
     *
     * @param id Authenticator ID.
     * @return Base64 URL decoded authenticator ID.
     * @throws IdentityProviderManagementClientException IF an error occurred while decoding the authenticator ID.
     */
    private String decodeAuthenticatorID(String id) throws IdentityProviderManagementClientException {

        try {
            return base64URLDecode(id);
        } catch (IllegalArgumentException e) {
            if (StringUtils.isBlank(e.getLocalizedMessage())) {
                throw new IdentityProviderManagementClientException("Invalid Authenticator ID: " + id, e);
            }
            throw new IdentityProviderManagementClientException(
                    String.format("%s : Authenticator ID: %s", e.getMessage(), id), e);
        }
    }

    /**
     * Get meta information about Identity Provider's outbound provisioning connectors.
     *
     * @return List of meta outbound provisioning connectors.
     */
    public List<MetaOutboundConnectorListItem> getMetaOutboundConnectors() {

        List<MetaOutboundConnectorListItem> metaOutboundConnectors = new ArrayList<>();
        try {
            ProvisioningConnectorConfig[] connectorConfigs = identityProviderManager.getAllProvisioningConnectors();
            if (ArrayUtils.isNotEmpty(connectorConfigs)) {
                for (ProvisioningConnectorConfig connectorConfig : connectorConfigs) {
                    MetaOutboundConnectorListItem metaOutboundConnector = createMetaOutboundConnectorListItem
                            (connectorConfig);
                    metaOutboundConnectors.add(metaOutboundConnector);
                }
            }
            return metaOutboundConnectors;
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_META_CONNECTORS, null);
        }
    }

    /**
     * Get meta information about a specific outbound provisioning connector supported by the IDPs.
     *
     * @param id Outbound Provisioning Connector ID.
     * @return MetaOutboundConnector.
     */
    public MetaOutboundConnector getMetaOutboundConnector(String id) {

        String connectorName = base64URLDecode(id);
        MetaOutboundConnector connector = null;
        try {
            ProvisioningConnectorConfig[] connectorConfigs = identityProviderManager.getAllProvisioningConnectors();
            if (ArrayUtils.isNotEmpty(connectorConfigs)) {
                for (ProvisioningConnectorConfig connectorConfig : connectorConfigs) {
                    if (StringUtils.equals(connectorConfig.getName(), connectorName)) {
                        connector = createMetaOutboundConnector(connectorConfig);
                        break;
                    }
                }
            }
            return connector;
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_META_CONNECTOR, id);
        }
    }

    /**
     * Returns configured federated authenticators of a specific identity provider.
     *
     * @param idpId Identity provider resource ID.
     * @return FederatedAuthenticatorListResponse Federated authenticator list.
     */
    public FederatedAuthenticatorListResponse getFederatedAuthenticators(String idpId) {

        FederatedAuthenticatorListResponse listResponse;

        try {
            IdentityProvider idP = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);

            if (idP == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            listResponse = new FederatedAuthenticatorListResponse();
            FederatedAuthenticatorConfig[] fedAuthConfigs = idP.getFederatedAuthenticatorConfigs();
            if (fedAuthConfigs != null) {
                List<FederatedAuthenticatorListItem> fedAuthList = FederatedAuthenticatorConfigBuilderFactory.build(
                        fedAuthConfigs, idP.getResourceId());
                String defaultAuthenticator = (idP.getDefaultAuthenticatorConfig() != null ? base64URLEncode(idP
                        .getDefaultAuthenticatorConfig().getName()) : null);
                listResponse.setDefaultAuthenticatorId(defaultAuthenticator);
                listResponse.setAuthenticators(fedAuthList);
            }
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_AUTHENTICATORS, idpId);
        }
        return listResponse;
    }

    /**
     * Get information of a specific federated authenticator of an IDP.
     *
     * @param idpId           Identity Provider resource ID.
     * @param authenticatorId Federated Authenticator ID.
     * @return FederatedAuthenticator.
     */
    public FederatedAuthenticator getFederatedAuthenticator(String idpId, String authenticatorId) {

        try {
            IdentityProvider idp = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);
            if (idp == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            FederatedAuthenticatorConfig[] fedAuthConfigs = idp.getFederatedAuthenticatorConfigs();
            if (fedAuthConfigs != null) {
                for (FederatedAuthenticatorConfig config : fedAuthConfigs) {
                    if (StringUtils.equals(config.getName(), base64URLDecode(authenticatorId))) {
                        return createFederatedAuthenticator(authenticatorId, idp);
                    }
                }
            }
            throw handleException(Response.Status.NOT_FOUND,
                    Constants.ErrorMessage.ERROR_CODE_AUTHENTICATOR_NOT_FOUND_FOR_IDP, authenticatorId);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_AUTHENTICATOR,
                    authenticatorId);
        }
    }

    /**
     * Update federated authenticator of and IDP.
     *
     * @param idpId                Identity Provider resource ID.
     * @param authenticatorRequest Federated Authenticators Request.
     * @return FederatedAuthenticatorListResponse.
     */
    public FederatedAuthenticatorListResponse updateFederatedAuthenticators(String idpId, FederatedAuthenticatorRequest
            authenticatorRequest) {

        try {
            IdentityProvider idp = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);
            if (idp == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            // Need to create a clone, since modifying the fields of the original object, will modify the cached
            // IDP object.
            IdentityProvider idpToUpdate = createIdPClone(idp);
            updateFederatedAuthenticatorConfig(idpToUpdate, authenticatorRequest, IdpOperation.UPDATE);
            IdentityProvider updatedIdp = identityProviderManager.updateIdPByResourceId(idpId, idpToUpdate,
                        ContextLoader.getTenantDomainFromContext());
            return createFederatedAuthenticatorResponse(updatedIdp);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP, StringUtils.EMPTY);
        }
    }
    /**
     * Update federated authenticator of and IDP.
     *
     * @param idpId                    Identity Provider resource ID.
     * @param federatedAuthenticatorId Federated Authenticator ID.
     * @param authenticator            Federated Authenticator information.
     * @return FederatedAuthenticator.
     */
    public FederatedAuthenticator updateFederatedAuthenticator(String idpId, String federatedAuthenticatorId,
                                                               FederatedAuthenticatorPUTRequest authenticator) {

        try {
            String tenantDomain = ContextLoader.getTenantDomainFromContext();
            IdentityProvider idp = identityProviderManager.getIdPByResourceId(idpId, tenantDomain, true);
            if (idp == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            // Need to create a clone, since modifying the fields of the original object, will modify the cached
            // IDP object.
            IdentityProvider idpToUpdate = createIdPClone(idp);

            checkAuthenticatorExistence(federatedAuthenticatorId, tenantDomain);
            // Create new FederatedAuthenticatorConfig to store the federated authenticator information.
            FederatedAuthenticatorConfig authConfig = updateFederatedAuthenticatorConfig(federatedAuthenticatorId,
                    authenticator);
            FederatedAuthenticatorConfig[] fedAuthConfigs = createFederatedAuthenticatorArrayClone
                    (federatedAuthenticatorId, idp.getFederatedAuthenticatorConfigs());
            int configPos = getExistingAuthConfigPosition(fedAuthConfigs, federatedAuthenticatorId);
            // If configPos != -1, modify the existing authenticatorConfig of IDP.
            if (configPos != -1) {
                fedAuthConfigs[configPos] = authConfig;
            } else {
                // If configPos is -1 add new authenticator to the list.
                List<FederatedAuthenticatorConfig> authConfigList = new ArrayList<>(Arrays.asList(fedAuthConfigs));
                authConfigList.add(authConfig);
                fedAuthConfigs = authConfigList.toArray(new FederatedAuthenticatorConfig[0]);
            }
            idpToUpdate.setFederatedAuthenticatorConfigs(fedAuthConfigs);

            if (authenticator.getIsDefault()) {
                idpToUpdate.setDefaultAuthenticatorConfig(authConfig);
            } else if (idpToUpdate.getDefaultAuthenticatorConfig() != null && idpToUpdate
                    .getDefaultAuthenticatorConfig().getName().equals(authConfig.getName())) {
                idpToUpdate.setDefaultAuthenticatorConfig(null);
            }

            IdentityProvider updatedIdP = identityProviderManager.updateIdPByResourceId(idpId, idpToUpdate,
                    ContextLoader.getTenantDomainFromContext());
            return createFederatedAuthenticator(federatedAuthenticatorId, updatedIdP);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP_AUTHENTICATOR,
                    federatedAuthenticatorId);
        }
    }

    /**
     * Get outbound provisioning connectors of a specific Identity Provider.
     *
     * @param idpId Identity Provider resource ID.
     * @return OutboundConnectorListResponse.
     */
    public OutboundConnectorListResponse getOutboundConnectors(String idpId) {

        try {
            IdentityProvider idp = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);
            if (idp == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            OutboundConnectorListResponse listResponse = null;
            String defaultConnectorId = null;

            ProvisioningConnectorConfig[] connectorConfigs = idp.getProvisioningConnectorConfigs();
            if (connectorConfigs != null) {
                listResponse = new OutboundConnectorListResponse();
                List<OutboundConnectorListItem> connectorList = new ArrayList<>();
                for (ProvisioningConnectorConfig config : connectorConfigs) {
                    connectorList.add(createOutboundConnectorListItem(idpId, config));
                    if (idp.getDefaultProvisioningConnectorConfig() != null) {
                        defaultConnectorId = base64URLEncode(idp.getDefaultProvisioningConnectorConfig()
                                .getName());
                    }
                }
                listResponse.setDefaultConnectorId(defaultConnectorId);
                listResponse.setConnectors(connectorList);
            }
            return listResponse;

        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_CONNECTORS, idpId);
        }
    }

    /**
     * Get specific outbound provisioning connector of an Identity Provider.
     *
     * @param idpId       Identity Provider resource ID.
     * @param connectorId Outbound provisioning connector ID.
     * @return OutboundConnector.
     */
    public OutboundConnector getOutboundConnector(String idpId, String connectorId) {

        try {
            IdentityProvider idp = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);
            if (idp == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            ProvisioningConnectorConfig[] connectorConfigs = idp.getProvisioningConnectorConfigs();
            if (connectorConfigs != null) {
                for (ProvisioningConnectorConfig config : connectorConfigs) {
                    if (StringUtils.equals(config.getName(), base64URLDecode(connectorId))) {
                        return createOutboundConnector(connectorId, idp);
                    }
                }
            }
            throw handleException(Response.Status.NOT_FOUND,
                    Constants.ErrorMessage.ERROR_CODE_CONNECTOR_NOT_FOUND_FOR_IDP, connectorId);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_CONNECTOR, connectorId);
        }
    }

    /**
     * Update outbound provisioning connector config.
     *
     * @param idpId                    Identity Provider resource ID.
     * @param outboundConnectorRequest Outbound provisioning connector request.
     * @return OutboundConnectorListResponse.
     */
    public OutboundConnectorListResponse updateOutboundConnectors(String idpId, OutboundProvisioningRequest
            outboundConnectorRequest) {

        try {
            IdentityProvider idp = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);
            if (idp == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            // Need to create a clone, since modifying the fields of the original object, will modify the cached
            // IDP object.
            IdentityProvider idpToUpdate = createIdPClone(idp);
            updateOutboundConnectorConfig(idpToUpdate, outboundConnectorRequest);

            IdentityProvider updatedIdp = identityProviderManager.updateIdPByResourceId(idpId, idpToUpdate,
                    ContextLoader.getTenantDomainFromContext());
            return createOutboundProvisioningResponse(updatedIdp);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP, StringUtils.EMPTY);
        }
    }

    /**
     * Update outbound provisioning connector config.
     *
     * @param idpId             Identity Provider resource ID.
     * @param connectorId       Outbound provisioning connector ID.
     * @param outboundConnector New Outbound Connector information.
     * @return OutboundConnector OutboundConnector response.
     */
    public OutboundConnector updateOutboundConnector(String idpId, String connectorId,
                                                     OutboundConnectorPUTRequest
                                                             outboundConnector) {

        try {
            IdentityProvider idp = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);
            if (idp == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            IdentityProvider idpToUpdate = createIdPClone(idp);
            ProvisioningConnectorConfig connectorConfig = createProvisioningConnectorConfig(connectorId,
                    outboundConnector);

            ProvisioningConnectorConfig[] provConnectorConfigs = createProvisioningConnectorArrayClone(connectorId, idp
                    .getProvisioningConnectorConfigs());
            int configPos = getExistingProvConfigPosition(provConnectorConfigs, connectorId);
            if (configPos != -1) {
                provConnectorConfigs[configPos] = connectorConfig;
            } else {
                // if configPos is -1 add new authenticator to the list.
                if (isValidConnector(connectorId)) {
                    List<ProvisioningConnectorConfig> connectorConfigsList = new ArrayList<>(
                            Arrays.asList(provConnectorConfigs));
                    connectorConfigsList.add(connectorConfig);
                    provConnectorConfigs = connectorConfigsList.toArray(new ProvisioningConnectorConfig[0]);
                } else {
                    throw handleException(Response.Status.NOT_FOUND,
                            Constants.ErrorMessage.ERROR_CODE_CONNECTOR_NOT_FOUND_FOR_IDP, connectorId);
                }
            }
            idpToUpdate.setProvisioningConnectorConfigs(provConnectorConfigs);

            if (outboundConnector.getIsDefault()) {
                idpToUpdate.setDefaultProvisioningConnectorConfig(connectorConfig);
            } else if (idpToUpdate.getDefaultProvisioningConnectorConfig() != null && idpToUpdate
                    .getDefaultProvisioningConnectorConfig().getName().equals(connectorConfig.getName())) {
                idpToUpdate.setDefaultProvisioningConnectorConfig(null);
            }

            IdentityProvider updatedIdP = identityProviderManager.updateIdPByResourceId(idpId, idpToUpdate,
                    ContextLoader.getTenantDomainFromContext());
            return createOutboundConnector(connectorId, updatedIdP);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP_CONNECTOR, connectorId);
        }
    }

    /**
     * Get Claim Configuration.
     *
     * @param idpId Identity Provider resource ID.
     * @return Claims.
     */
    public Claims getClaimConfig(String idpId) {

        try {
            IdentityProvider identityProvider = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);
            if (identityProvider == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            return createClaimResponse(identityProvider.getClaimConfig());

        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_CLAIMS, idpId);
        }
    }

    /**
     * Update claim configuration.
     *
     * @param idpId  Identity Provider resource ID.
     * @param claims Claims.
     * @return Claims   Update claim config.
     */
    public Claims updateClaimConfig(String idpId, Claims claims) {

        try {
            String tenantDomain = ContextLoader.getTenantDomainFromContext();
            validateClaims(tenantDomain, claims);
            IdentityProvider idP =
                    createIdPClone(identityProviderManager.getIdPByResourceId(idpId, tenantDomain, true));
            if (idP == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            updateClaims(idP, claims);
            IdentityProvider updatedIdP = identityProviderManager.updateIdPByResourceId(idpId, idP, tenantDomain);
            return createClaimResponse(updatedIdP.getClaimConfig());
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP_CLAIMS, idpId);
        }
    }

    /**
     * Get Role Configuration.
     *
     * @param idpId Identity Provider resource ID.
     * @return Roles.
     */
    public Roles getRoleConfig(String idpId) {

        try {
            IdentityProvider identityProvider = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);
            if (identityProvider == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            return createRoleResponse(identityProvider);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_ROLES, idpId);
        }
    }

    /**
     * Update role configuration.
     *
     * @param idpId Identity Provider resource ID.
     * @param roles Role information.
     * @return Roles    Update role config.
     */
    public Roles updateRoleConfig(String idpId, Roles roles) {

        try {
            IdentityProvider idP = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                            .getTenantDomainFromContext(), true);
            if (idP == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            updateRoles(idP, roles);

            IdentityProvider updatedIdP = identityProviderManager.updateIdPByResourceId(idpId,
                            idP, ContextLoader.getTenantDomainFromContext());
            return createRoleResponse(updatedIdP);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP_ROLES, idpId);
        }
    }

    /**
     * Get Group Configuration for API response.
     *
     * @param idpId Identity Provider resource ID.
     * @return Groups of the Identity Provider.
     */
    public List<IdPGroup> getGroupConfig(String idpId) {

        try {
            IdentityProvider identityProvider = identityProviderManager.getIdPByResourceId(idpId,
                    ContextLoader.getTenantDomainFromContext(), true);
            if (identityProvider == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            return createGroupResponse(identityProvider);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_GROUPS, idpId);
        }
    }

    /**
     * Update IdP group configuration.
     *
     * @param idpId  Identity Provider resource ID.
     * @param groups IdP Groups from the request.
     * @return Updated IdP Groups.
     */
    public List<IdPGroup> updateGroupConfig(String idpId, List<IdPGroup> groups) {

        try {
            IdentityProvider idP = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);
            if (idP == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            updateGroups(idP, groups);

            IdentityProvider updatedIdP = identityProviderManager.updateIdPByResourceId(idpId, idP,
                    ContextLoader.getTenantDomainFromContext());
            return createGroupResponse(updatedIdP);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP_GROUPS, idpId);
        }
    }

    /**
     * Get Provisioning configuration. Includes JIT config and outbound provisioning connectors.
     *
     * @param idpId Identity Provider resource ID.
     * @return ProvisioningResponse.
     */
    public ProvisioningResponse getProvisioningConfig(String idpId) {

        try {
            IdentityProvider identityProvider = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);
            if (identityProvider == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            return createProvisioningResponse(identityProvider);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_PROVISIONING, idpId);
        }
    }

    public AssociationResponse getFederatedAssociationConfig(String idpId) {

        try {
            IdentityProvider identityProvider = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);
            if (identityProvider == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }

            return createAssociationResponse(identityProvider);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_ASSOCIATION, idpId);
        }
    }

    public AssociationResponse updateFederatedAssociationConfig(String idpId, AssociationRequest associationRequest) {

        try {
            IdentityProvider idP = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);

            if (idP == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }

            updateFederatedAssociation(idP, associationRequest);

            IdentityProvider updatedIdP = identityProviderManager.updateIdPByResourceId(idpId, idP, ContextLoader
                    .getTenantDomainFromContext());

            return createAssociationResponse(updatedIdP);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP_ASSOCIATION, idpId);
        }
    }

    /**
     * Get Just-In-Time Provisioning configuration.
     *
     * @param idpId Identity Provider resource ID.
     * @return JustInTimeProvisioning.
     */
    public JustInTimeProvisioning getJITConfig(String idpId) {

        try {
            IdentityProvider identityProvider = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                            .getTenantDomainFromContext(), true);
            if (identityProvider == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            return createJITResponse(identityProvider);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_JIT, idpId);
        }
    }

    /**
     * Update Just-In-Time Provisioning configuration.
     *
     * @param idpId                        Identity Provider resource ID.
     * @param justInTimeProvisioningConfig JIT config.
     * @return updated JIT config.
     */
    public JustInTimeProvisioning updateJITConfig(String idpId, JustInTimeProvisioning justInTimeProvisioningConfig) {

        try {
            IdentityProvider idP = identityProviderManager.getIdPByResourceId(idpId, ContextLoader
                    .getTenantDomainFromContext(), true);
            if (idP == null) {
                throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_IDP_NOT_FOUND,
                        idpId);
            }
            updateJIT(idP, justInTimeProvisioningConfig);

            IdentityProvider updatedIdP = identityProviderManager.updateIdPByResourceId(idpId, idP, ContextLoader
                    .getTenantDomainFromContext());
            return createJITResponse(updatedIdP);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP_JIT, idpId);
        }
    }

    /**
     * Get applications that are connected to the Identity Provider identified by resource ID.
     *
     * @param resourceId    IDP resource ID.
     * @param limit         Limit parameter.
     * @param offset        Offset parameter.
     * @return  ConnectedApps.
     */
    public ConnectedApps getConnectedApps(String resourceId, Integer limit, Integer offset) {

        try {
            ConnectedAppsResult connectedAppsResult = identityProviderManager.getConnectedApplications(resourceId,
                    limit, offset, ContextLoader.getTenantDomainFromContext());
            return createConnectedAppsResponse(resourceId, connectedAppsResult);
        } catch (IdentityProviderManagementException e) {
            throw handleIdPException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_CONNECTED_APPS,
                    resourceId);
        }
    }

    /**
     * Retrieve the list of IDP templates.
     *
     * @param limit         Items per page.
     * @param offset        Offset.
     * @param searchContext Search Criteria. E.g. filter="name" sw "google" and "category" eq "DEFAULT"
     * @return List of identity templates.
     */
    public IdentityProviderTemplateListResponse getIDPTemplates(Integer limit, Integer offset, SearchContext
            searchContext) {

        try {
            List<Template> templateList = templateManager.listTemplates(
                    TemplateMgtConstants.TemplateType.IDP_TEMPLATE.toString(), limit, offset, getSearchCondition
                            (TemplateMgtConstants.TemplateType.IDP_TEMPLATE.toString(), ContextLoader
                                    .getTenantDomainFromContext(), searchContext));
            return createIDPTemplateListResponse(templateList, offset, limit, searchContext.getSearchExpression());
        } catch (TemplateManagementException e) {
            throw handleTemplateMgtException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_LISTING_IDP_TEMPLATES, null);
        }
    }

    /**
     * Retrieve search condition from @{SearchContext}.
     *
     * @param templateType  Template type.
     * @param tenantDomain  Tenant domain.
     * @param searchContext Search context.
     * @return  Condition.
     */
    private Condition getSearchCondition(String templateType, String tenantDomain, SearchContext searchContext) {

        if (searchContext != null) {
            SearchCondition<ResourceSearchBean> searchCondition = searchContext.getCondition(ResourceSearchBean.class);
            if (searchCondition != null) {
                Condition result = buildSearchCondition(searchCondition);
                Condition typeCondition = new PrimitiveCondition(Constants.TEMPLATE_TYPE_KEY, EQUALS, templateType);
                Condition tenantCondition = new PrimitiveCondition(Constants.TENANT_DOMAIN_KEY, EQUALS, tenantDomain);

                List<Condition> list = new ArrayList<>();
                list.add(result);
                list.add(typeCondition);
                list.add(tenantCondition);
                return new ComplexCondition(getComplexOperatorFromOdata(ConditionType.AND),
                        list);
            } else {
                if (log.isDebugEnabled()) {
                    log.debug("Search condition parsed from the search expression is invalid.");
                }
            }
        } else {
            if (log.isDebugEnabled()) {
                log.debug("Cannot find a valid search context.");
            }
        }
        return null;
    }

    private Condition buildSearchCondition(SearchCondition searchCondition) {

        if (!(searchCondition.getStatement() == null)) {
            PrimitiveStatement primitiveStatement = searchCondition.getStatement();

            if (Constants.SEARCH_KEY_NAME.equals(primitiveStatement.getProperty())) {
                return new PrimitiveCondition(
                        Constants.SEARCH_KEY_NAME_INTERNAL, getPrimitiveOperatorFromOdata(primitiveStatement
                        .getCondition()), primitiveStatement.getValue());
            } else if (Constants.SEARCH_KEY_SERVICES.equals(primitiveStatement.getProperty()) &&
                    getPrimitiveOperatorFromOdata(primitiveStatement.getCondition()) == EQUALS) {
                Condition servicesAttrKeyCondition = new PrimitiveCondition(Constants.ATTR_KEY, EQUALS, Constants
                        .SEARCH_KEY_SERVICES);
                Condition servicesAttrValueCondition = new PrimitiveCondition(Constants.ATTR_VALUE, EQUALS,
                        primitiveStatement.getValue());
                Condition servicesCondition = new ComplexCondition(getComplexOperatorFromOdata(ConditionType.AND),
                        Arrays.asList(servicesAttrKeyCondition, servicesAttrValueCondition));

                Condition servicesCombinedAttrKeyCondition = new PrimitiveCondition(Constants.ATTR_KEY, EQUALS,
                        Constants.SEARCH_KEY_SERVICES);
                Condition servicesCombinedAttrValueCondition = new PrimitiveCondition(Constants.ATTR_VALUE, EQUALS,
                        Constants.SEARCH_VALUE_AUTHENTICATION_PROVISIONING);
                Condition servicesCombinedCondition = new ComplexCondition(getComplexOperatorFromOdata(ConditionType
                        .AND), Arrays.asList(servicesCombinedAttrKeyCondition, servicesCombinedAttrValueCondition));

                return new ComplexCondition(getComplexOperatorFromOdata(ConditionType.OR), Arrays.asList
                        (servicesCondition, servicesCombinedCondition));
            } else if (Constants.SEARCH_KEYS.contains(primitiveStatement.getProperty())) {
                List<Condition> list = new ArrayList<>();
                Condition attrKeyCondition = new PrimitiveCondition(Constants.ATTR_KEY, EQUALS, primitiveStatement
                        .getProperty());
                Condition attrValueCondition = new PrimitiveCondition(Constants.ATTR_VALUE,
                        getPrimitiveOperatorFromOdata(primitiveStatement.getCondition()), primitiveStatement
                        .getValue());
                list.add(attrKeyCondition);
                list.add(attrValueCondition);
                return new ComplexCondition(getComplexOperatorFromOdata(ConditionType.AND),
                        list);
            } else {
                throw handleException(Response.Status.BAD_REQUEST,
                        Constants.ErrorMessage.ERROR_CODE_ERROR_INVALID_SEARCH_FILTER, null);
            }
        } else {
            List<Condition> conditions = new ArrayList<>();
            for (Object condition : searchCondition.getSearchConditions()) {
                Condition buildCondition = buildSearchCondition((SearchCondition) condition);
                conditions.add(buildCondition);
            }
            return new ComplexCondition(getComplexOperatorFromOdata(searchCondition.getConditionType()), conditions);
        }
    }

    private org.wso2.carbon.identity.configuration.mgt.core.search.constant.ConditionType.PrimitiveOperator
    getPrimitiveOperatorFromOdata(org.apache.cxf.jaxrs.ext.search.ConditionType odataConditionType) {

        org.wso2.carbon.identity.configuration.mgt.core.search.constant.ConditionType.PrimitiveOperator
                primitiveConditionType = null;
        switch (odataConditionType) {
            case EQUALS:
                primitiveConditionType = EQUALS;
                break;
            case GREATER_OR_EQUALS:
                primitiveConditionType = org.wso2.carbon.identity.configuration.mgt.core.search.constant
                        .ConditionType.PrimitiveOperator.GREATER_OR_EQUALS;
                break;
            case LESS_OR_EQUALS:
                primitiveConditionType = org.wso2.carbon.identity.configuration.mgt.core.search.constant
                        .ConditionType.PrimitiveOperator.LESS_OR_EQUALS;
                break;
            case GREATER_THAN:
                primitiveConditionType = org.wso2.carbon.identity.configuration.mgt.core.search.constant
                        .ConditionType.PrimitiveOperator.GREATER_THAN;
                break;
            case NOT_EQUALS:
                primitiveConditionType = org.wso2.carbon.identity.configuration.mgt.core.search.constant
                        .ConditionType.PrimitiveOperator.NOT_EQUALS;
                break;
            case LESS_THAN:
                primitiveConditionType = org.wso2.carbon.identity.configuration.mgt.core.search.constant
                        .ConditionType.PrimitiveOperator.LESS_THAN;
                break;
            default:
                throw handleException(Response.Status.BAD_REQUEST,
                        Constants.ErrorMessage.ERROR_CODE_ERROR_INVALID_SEARCH_FILTER, null);
        }
        return primitiveConditionType;
    }

    private org.wso2.carbon.identity.configuration.mgt.core.search.constant.ConditionType.ComplexOperator
    getComplexOperatorFromOdata(org.apache.cxf.jaxrs.ext.search.ConditionType odataConditionType) {

        org.wso2.carbon.identity.configuration.mgt.core.search.constant.ConditionType.ComplexOperator
                complexConditionType = null;
        switch (odataConditionType) {
            case OR:
                complexConditionType = org.wso2.carbon.identity.configuration.mgt.core.search.constant.ConditionType
                        .ComplexOperator.OR;
                break;
            case AND:
                complexConditionType = org.wso2.carbon.identity.configuration.mgt.core.search.constant.ConditionType
                        .ComplexOperator.AND;
                break;
            default:
                throw handleException(Response.Status.BAD_REQUEST,
                        Constants.ErrorMessage.ERROR_CODE_ERROR_INVALID_SEARCH_FILTER, null);
        }
        return complexConditionType;
    }

    /**
     * Get an identity provider template identified by resource ID.
     *
     * @param templateId IDP template Id
     * @return IdentityProviderTemplateResponse
     */
    public IdentityProviderTemplate getIDPTemplate(String templateId) {

        try {
            Template idpTemplate = templateManager.getTemplateById(templateId);
            return createIDPTemplateResponse(idpTemplate);
        } catch (TemplateManagementException e) {
            throw handleTemplateMgtException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_TEMPLATE,
                    templateId);
        } catch (IOException e) {
            throw handleException(Response.Status.INTERNAL_SERVER_ERROR,
                    Constants.ErrorMessage.ERROR_CODE_ERROR_RETRIEVING_IDP_TEMPLATE, templateId);
        }
    }

    /**
     * Update IDP template.
     *
     * @param identityProviderTemplate Updated IDP template
     */
    public void updateIDPTemplate(String templateId, IdentityProviderTemplate identityProviderTemplate) {

        try {
            Template idpTemplate = generateIDPTemplate(identityProviderTemplate);
            templateManager.updateTemplateById(templateId, idpTemplate);
        } catch (TemplateManagementException e) {
            throw handleTemplateMgtException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP_TEMPLATE,
                    identityProviderTemplate.getId());
        } catch (JsonProcessingException e) {
            throw handleException(Response.Status.BAD_REQUEST,
                    Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP_TEMPLATE, templateId);
        }
    }

    /**
     * Create a new IDP template.
     *
     * @param identityProviderTemplate identityProviderTemplatePOSTRequest
     * @return IdentityProviderTemplateResponse
     */
    public String createIDPTemplate(IdentityProviderTemplate identityProviderTemplate) {

        try {
            Template idpTemplate = generateIDPTemplate(identityProviderTemplate);
            return templateManager.addTemplate(idpTemplate);
        } catch (TemplateManagementException e) {
            throw handleTemplateMgtException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_ADDING_IDP_TEMPLATE, null);
        } catch (JsonProcessingException e) {
            throw handleException(Response.Status.BAD_REQUEST,
                    Constants.ErrorMessage.ERROR_CODE_ERROR_ADDING_IDP_TEMPLATE, null);
        }
    }

    /**
     * Delete a IDP template identified by resource Id.
     *
     * @param templateId Id of the IDP template
     */
    public void deleteIDPTemplate(String templateId) {

        try {
            templateManager.deleteTemplateById(templateId);
        } catch (TemplateManagementException e) {
            throw handleTemplateMgtException(e, Constants.ErrorMessage.ERROR_CODE_ERROR_DELETING_IDP_TEMPLATE,
                    templateId);
        }
    }

    /**
     * Create the IDP template list response.
     *
     * @param templateInfoList  List of IDP templates.
     * @param offset            Offset.
     * @param limit             Limit.
     * @param filter            IDP template filter.
     * @return {@link IdentityProviderTemplateListResponse}
     */
    private IdentityProviderTemplateListResponse createIDPTemplateListResponse(
            List<Template> templateInfoList, Integer offset, Integer limit, String filter) {

        IdentityProviderTemplateListResponse idpTemplateListResponse = new IdentityProviderTemplateListResponse();
        if (!CollectionUtils.isEmpty(templateInfoList)) {
            List<IdentityProviderTemplateListItem> idpTemplates = new ArrayList<>();
            for (Template idpTemplate: templateInfoList) {
                IdentityProviderTemplateListItem idpTemplateListItem = new IdentityProviderTemplateListItem();
                idpTemplateListItem.setId(idpTemplate.getTemplateId());
                idpTemplateListItem.setDescription(idpTemplate.getDescription());
                idpTemplateListItem.setName(idpTemplate.getTemplateName());
                idpTemplateListItem.setImage(idpTemplate.getImageUrl());
                idpTemplateListItem.setSelf(
                        ContextLoader.buildURIForBody(String.format(V1_API_PATH_COMPONENT + IDP_PATH_COMPONENT
                                        + IDP_TEMPLATE_PATH_COMPONENT + "/%s",
                                idpTemplate.getTemplateId())).toString());
                if (idpTemplate.getPropertiesMap().containsKey(PROP_CATEGORY)) {
                    if (IdentityProviderTemplateListItem.CategoryEnum.CUSTOM.toString()
                            .equals(idpTemplate.getPropertiesMap().get(PROP_CATEGORY))) {
                        idpTemplateListItem.setCategory(IdentityProviderTemplateListItem.CategoryEnum.CUSTOM);
                    } else {
                        idpTemplateListItem.setCategory(IdentityProviderTemplateListItem.CategoryEnum.DEFAULT);
                    }
                }
                if (idpTemplate.getPropertiesMap().containsKey(PROP_DISPLAY_ORDER)) {
                    idpTemplateListItem.setDisplayOrder(
                            Integer.valueOf(idpTemplate.getPropertiesMap().get(PROP_DISPLAY_ORDER)));
                }
                if ((idpTemplate.getPropertiesMap().containsKey(PROP_SERVICES)) &&
                        (idpTemplate.getPropertiesMap().get(PROP_SERVICES) != null)) {
                    idpTemplateListItem.setServices(Arrays.asList(
                            idpTemplate.getPropertiesMap().get(PROP_SERVICES).split(",")));
                }
                idpTemplates.add(idpTemplateListItem);
            }
            idpTemplateListResponse.setTemplates(idpTemplates);
            idpTemplateListResponse.setCount(idpTemplates.size());
        } else {
            idpTemplateListResponse.setCount(0);
        }
        limit = (limit == null) ? Integer.valueOf(0) : limit;
        offset = (offset == null) ? Integer.valueOf(0) : offset;
        idpTemplateListResponse.setTotalResults(templateInfoList.size());
        idpTemplateListResponse.setStartIndex(offset + 1);
        idpTemplateListResponse.setLinks(createLinks(V1_API_PATH_COMPONENT + IDP_TEMPLATE_PATH_COMPONENT,
                limit, offset, templateInfoList.size(), filter));
        return idpTemplateListResponse;
    }

    /**
     * Create IDP template response using retrieved IDP template.
     *
     * @param idpTemplate IDP template {@link Template}.
     * @return {@link IdentityProviderTemplate}
     * @throws IOException
     */
    private IdentityProviderTemplate createIDPTemplateResponse(Template idpTemplate) throws IOException {

        IdentityProviderTemplate idpTemplateResponse = new IdentityProviderTemplate();
        idpTemplateResponse.setId(idpTemplate.getTemplateId());
        idpTemplateResponse.setName(idpTemplate.getTemplateName());
        idpTemplateResponse.setDescription(idpTemplate.getDescription());
        idpTemplateResponse.setImage(idpTemplate.getImageUrl());
        if (idpTemplate.getPropertiesMap().containsKey(PROP_CATEGORY)) {
            if (IdentityProviderTemplateListItem.CategoryEnum.CUSTOM.toString()
                    .equals(idpTemplate.getPropertiesMap().get(PROP_CATEGORY))) {
                idpTemplateResponse.setCategory(IdentityProviderTemplate.CategoryEnum.CUSTOM);
            } else {
                idpTemplateResponse.setCategory(IdentityProviderTemplate.CategoryEnum.DEFAULT);
            }
        }
        if (idpTemplate.getPropertiesMap().containsKey(PROP_DISPLAY_ORDER)) {
            idpTemplateResponse.setDisplayOrder(
                    Integer.valueOf(idpTemplate.getPropertiesMap().get(PROP_DISPLAY_ORDER)));
        }
        if (idpTemplate.getTemplateScript() != null) {
            ObjectMapper mapper = new ObjectMapper();
            IdentityProviderPOSTRequest idp = mapper.readValue(idpTemplate.getTemplateScript(),
                    IdentityProviderPOSTRequest.class);
            idpTemplateResponse.setIdp(idp);
        }
        return idpTemplateResponse;
    }

    /**
     * Create {@link Template} using the {@link IdentityProviderTemplate}.
     *
     * @param idpTemplate Identity provider template object created by the API request.
     * @return IDPTemplate {@link Template}.
     * @throws JsonProcessingException
     */
    private Template generateIDPTemplate(IdentityProviderTemplate idpTemplate) throws JsonProcessingException {

        Template identityProviderTemplate = new Template();

        identityProviderTemplate.setTemplateName(idpTemplate.getName());
        identityProviderTemplate.setDescription(idpTemplate.getDescription());
        identityProviderTemplate.setImageUrl(idpTemplate.getImage());
        identityProviderTemplate.setTenantId(IdentityTenantUtil
                .getTenantId(ContextLoader.getTenantDomainFromContext()));
        Map<String, String> properties = createPropertiesMapForIdPTemplate(idpTemplate);
        identityProviderTemplate.setTemplateType(TemplateMgtConstants.TemplateType.IDP_TEMPLATE);
        identityProviderTemplate.setPropertiesMap(properties);
        identityProviderTemplate.setTemplateScript(createIDPTemplateScript(idpTemplate.getIdp()));
        return identityProviderTemplate;
    }

    /**
     * Create the properties map for the IDP template.
     *
     * @param idpTemplate Identity provider template.
     * @return Map of properties.
     */
    private Map<String, String> createPropertiesMapForIdPTemplate(IdentityProviderTemplate idpTemplate) {

        Map<String, String> properties = new HashMap<>();
        if (idpTemplate.getCategory() != null) {
            properties.put(PROP_CATEGORY, idpTemplate.getCategory().toString());
        }
        if (idpTemplate.getDisplayOrder() != null) {
            properties.put(PROP_DISPLAY_ORDER, String.valueOf(idpTemplate.getDisplayOrder()));
        }
        ArrayList<String> services = createServicesListForIdP(idpTemplate.getIdp());
        if (!services.isEmpty()) {
            String servicesString = String.join(",", services);
            properties.put(PROP_SERVICES, servicesString);
        }
        return properties;
    }

    /**
     * Create services list for the IDP template.
     *
     * @param idp Identity provider template.
     * @return List of services supported by the IDP.
     */
    private ArrayList<String> createServicesListForIdP(IdentityProviderPOSTRequest idp) {

        ArrayList<String> services = new ArrayList<>();
        if (idp.getProvisioning() != null && idp.getProvisioning().getOutboundConnectors() != null && CollectionUtils
                .isNotEmpty(idp.getProvisioning().getOutboundConnectors().getConnectors())) {
            services.add(SERV_PROVISIONING);
        }
        if (idp.getFederatedAuthenticators() != null && CollectionUtils.isNotEmpty(idp.getFederatedAuthenticators()
                .getAuthenticators())) {
            services.add(SERV_AUTHENTICATION);
        }
        return services;
    }

    /**
     * Handle template management exceptions and return related API errors.
     *
     * @param e {@link TemplateManagementException}.
     * @param errorEnum Error message with error code and description.
     * @param data Additional information.
     * @return API error.
     */
    private APIError handleTemplateMgtException(TemplateManagementException e, Constants.ErrorMessage errorEnum,
                                                String data) {

        ErrorResponse errorResponse;
        Response.Status status;

        if (e instanceof TemplateManagementClientException) {
            if (e.getErrorCode() != null) {
                String errorCode = e.getErrorCode();
                errorResponse = getErrorBuilder(errorCode, e.getMessage(), data).build(log, e.getMessage());
                errorCode = errorCode.contains(TEMPLATE_MGT_ERROR_CODE_DELIMITER) ?
                        errorCode : Constants.IDP_MANAGEMENT_PREFIX + errorCode;
                errorResponse.setCode(errorCode);
            } else {
                errorResponse = getErrorBuilder(errorEnum, data).build(log, e.getMessage());
            }
            errorResponse.setDescription(e.getMessage());
            status = Response.Status.BAD_REQUEST;
        } else if (e instanceof TemplateManagementServerException) {
            if (e.getErrorCode() != null) {
                String errorCode = e.getErrorCode();
                errorResponse = getErrorBuilder(errorCode, e.getMessage(), data).build(log, e,
                        includeData(e.getMessage(), data));
                errorCode = errorCode.contains(TEMPLATE_MGT_ERROR_CODE_DELIMITER) ?
                        errorCode : Constants.IDP_MANAGEMENT_PREFIX + errorCode;
                errorResponse.setCode(errorCode);
            } else {
                errorResponse = getErrorBuilder(errorEnum, data).build(log, e, includeData(e.getMessage(), data));
            }
            errorResponse.setDescription(e.getMessage());
            status = Response.Status.INTERNAL_SERVER_ERROR;
        } else {
            if (e.getErrorCode() != null) {
                errorResponse = getErrorBuilder(e.getErrorCode(), e.getMessage(), data).build(log, e,
                        includeData(e.getMessage(), data));
            } else {
                errorResponse = getErrorBuilder(errorEnum, data).build(log, e, includeData(e.getMessage(), data));
            }
            status = Response.Status.INTERNAL_SERVER_ERROR;
        }

        return new APIError(status, errorResponse);
    }

    /**
     * Generate a JSON object using the Identity Provider template.
     *
     * @param idpTemplate Identity provider template.
     * @return JSON object.
     * @throws JsonProcessingException
     */
    private String createIDPTemplateScript(IdentityProviderPOSTRequest idpTemplate) throws JsonProcessingException {

        ObjectMapper mapper = new ObjectMapper();
        return mapper.writeValueAsString(idpTemplate);
    }

    private ConnectedApps createConnectedAppsResponse(String resourceId, ConnectedAppsResult connectedAppsResult) {

        ConnectedApps connectedAppsResponse = new ConnectedApps();
        if (connectedAppsResult == null) {
            return connectedAppsResponse;
        }
        List<ConnectedApp> connectedAppList = new ArrayList<>();
        if (CollectionUtils.isNotEmpty(connectedAppsResult.getApps())) {
            for (String app : connectedAppsResult.getApps()) {
                ConnectedApp listItem = new ConnectedApp();
                listItem.setAppId(app);
                listItem.setSelf(ContextLoader.buildURIForBody(String.format(V1_API_PATH_COMPONENT +
                                "/applications/%s", app)).toString());
                connectedAppList.add(listItem);
            }
            connectedAppsResponse.setConnectedApps(connectedAppList);
            connectedAppsResponse.setCount(connectedAppList.size());
        } else {
            connectedAppsResponse.setCount(0);
        }

        connectedAppsResponse.setTotalResults(connectedAppsResult.getTotalAppCount());
        connectedAppsResponse.setStartIndex(connectedAppsResult.getOffSet() + 1);
        connectedAppsResponse.setLinks(createLinks(V1_API_PATH_COMPONENT + IDP_PATH_COMPONENT +
                        Constants.PATH_SEPERATOR + resourceId + "/connected-apps", connectedAppsResult.getLimit(),
                connectedAppsResult.getOffSet(), connectedAppsResult.getTotalAppCount(), null));
        return connectedAppsResponse;
    }

    private MetaFederatedAuthenticatorListItem createMetaFederatedAuthenticatorListItem(FederatedAuthenticatorConfig
                                                                                                authenticatorConfig) {

        MetaFederatedAuthenticatorListItem metaFederatedAuthenticator = new MetaFederatedAuthenticatorListItem();
        String authenticatorId = base64URLEncode(authenticatorConfig.getName());
        metaFederatedAuthenticator.setName(authenticatorConfig.getName());
        metaFederatedAuthenticator.setAuthenticatorId(authenticatorId);
        metaFederatedAuthenticator.setDefinedBy(MetaFederatedAuthenticatorListItem.DefinedByEnum.SYSTEM);
        FederatedAuthenticatorConfig federatedAuthenticatorConfig = ApplicationAuthenticatorService.getInstance()
                .getFederatedAuthenticatorByName(authenticatorConfig.getName());
        if (federatedAuthenticatorConfig != null) {
            String[] tags = federatedAuthenticatorConfig.getTags();
            if (ArrayUtils.isNotEmpty(tags)) {
                metaFederatedAuthenticator.setTags(Arrays.asList(tags));
            }
        }
        metaFederatedAuthenticator.setSelf(ContextLoader.buildURIForBody(String.format(V1_API_PATH_COMPONENT +
                IDP_PATH_COMPONENT + "/meta/federated-authenticators/%s", authenticatorId)).toString());
        return metaFederatedAuthenticator;
    }

    private MetaFederatedAuthenticator createMetaFederatedAuthenticator(FederatedAuthenticatorConfig
                                                                                authenticatorConfig) {

        MetaFederatedAuthenticator metaFederatedAuthenticator = new MetaFederatedAuthenticator();
        metaFederatedAuthenticator.setName(authenticatorConfig.getName());
        metaFederatedAuthenticator.setAuthenticatorId(base64URLEncode(authenticatorConfig.getName()));
        metaFederatedAuthenticator.setDisplayName(authenticatorConfig.getDisplayName());
        FederatedAuthenticatorConfig federatedAuthenticatorConfig = ApplicationAuthenticatorService.getInstance()
                .getFederatedAuthenticatorByName(authenticatorConfig.getName());
        if (federatedAuthenticatorConfig != null) {
            String[] tags = federatedAuthenticatorConfig.getTags();
            if (ArrayUtils.isNotEmpty(tags)) {
                metaFederatedAuthenticator.setTags(Arrays.asList(tags));
            }
        }
        metaFederatedAuthenticator.setDefinedBy(MetaFederatedAuthenticator.DefinedByEnum.SYSTEM);
        Property[] properties = authenticatorConfig.getProperties();
        List<MetaProperty> metaProperties = Arrays.stream(properties).map(propertyToExternalMeta).collect(Collectors
                .toList());
        metaFederatedAuthenticator.setProperties(metaProperties);
        return metaFederatedAuthenticator;
    }

    private MetaOutboundConnectorListItem createMetaOutboundConnectorListItem(ProvisioningConnectorConfig
                                                                                      connectorConfig) {

        MetaOutboundConnectorListItem metaOutboundProvisioningConnector = new MetaOutboundConnectorListItem();
        metaOutboundProvisioningConnector.setName(connectorConfig.getName());
        String connectorId = base64URLEncode(connectorConfig.getName());
        metaOutboundProvisioningConnector.setConnectorId(connectorId);
        metaOutboundProvisioningConnector
                .setSelf(ContextLoader.buildURIForBody(String.format(V1_API_PATH_COMPONENT + IDP_PATH_COMPONENT +
                        "/meta/outbound-provisioning-connectors/%s", connectorId)).toString());
        return metaOutboundProvisioningConnector;
    }

    private MetaOutboundConnector createMetaOutboundConnector(ProvisioningConnectorConfig
                                                                      connectorConfig) {

        MetaOutboundConnector metaOutboundProvisioningConnector = new MetaOutboundConnector();
        metaOutboundProvisioningConnector.setName(connectorConfig.getName());
        metaOutboundProvisioningConnector.setDisplayName(connectorConfig.getName());
        metaOutboundProvisioningConnector.setConnectorId(base64URLEncode(connectorConfig.getName()));
        Property[] properties = connectorConfig.getProvisioningProperties();
        List<MetaProperty> metaProperties = Arrays.stream(properties).map(propertyToExternalMeta).collect(Collectors
                .toList());
        metaOutboundProvisioningConnector.setProperties(metaProperties);
        return metaOutboundProvisioningConnector;
    }

    private void updateFederatedAuthenticatorConfig(IdentityProvider idp, FederatedAuthenticatorRequest
            federatedAuthenticatorRequest, IdpOperation operation) throws IdentityProviderManagementClientException {

        if (federatedAuthenticatorRequest != null) {
            List<FederatedAuthenticator> federatedAuthenticators = federatedAuthenticatorRequest.getAuthenticators();
            String defaultAuthenticator = federatedAuthenticatorRequest.getDefaultAuthenticatorId();
            FederatedAuthenticatorConfig defaultAuthConfig = null;
            List<FederatedAuthenticatorConfig> fedAuthConfigs = new ArrayList<>();
            for (FederatedAuthenticator authenticator : federatedAuthenticators) {
                String authenticatorName = getDecodedAuthenticatorName(authenticator.getAuthenticatorId());
                DefinedByType definedByType;
                if (IdpOperation.CREATION.equals(operation)) {
                    definedByType = resolveDefinedByTypeToIdpCreateOperation(
                            authenticator.getDefinedBy());
                } else {
                    definedByType = resolveDefinedByTypeToIdpUpdateOperation(authenticatorName,
                            authenticator.getDefinedBy());
                }
                if (definedByType == DefinedByType.USER && federatedAuthenticators.size() > 1) {
                    throw handleException(Response.Status.BAD_REQUEST,
                            Constants.ErrorMessage.ERROR_COED_MULTIPLE_USER_DEFINED_AUTHENTICATORS_FOUND, null);
                }
                FederatedAuthenticatorConfig authConfig = FederatedAuthenticatorConfigBuilderFactory.build(
                        authenticator, authenticatorName, definedByType);

                fedAuthConfigs.add(authConfig);

                if (StringUtils.equals(defaultAuthenticator, authenticator.getAuthenticatorId())) {
                    defaultAuthConfig = authConfig;
                }
            }

            if (StringUtils.isNotBlank(defaultAuthenticator) && defaultAuthConfig == null) {
                throw handleException(Response.Status.BAD_REQUEST,
                        Constants.ErrorMessage.ERROR_CODE_INVALID_DEFAULT_AUTHENTICATOR, null);
            }
            idp.setFederatedAuthenticatorConfigs(fedAuthConfigs.toArray(new FederatedAuthenticatorConfig[0]));
            idp.setDefaultAuthenticatorConfig(defaultAuthConfig);
        }
    }

    private void updateOutboundConnectorConfig(IdentityProvider idp,
                                               OutboundProvisioningRequest outboundProvisioningRequest) {

        if (outboundProvisioningRequest != null) {
            List<OutboundConnector> outboundConnectors = outboundProvisioningRequest.getConnectors();
            String defaultConnectorId = outboundProvisioningRequest.getDefaultConnectorId();
            ProvisioningConnectorConfig defaultConnectorConfig = null;
            List<ProvisioningConnectorConfig> connectorConfigs = new ArrayList<>();
            for (OutboundConnector connector : outboundConnectors) {
                ProvisioningConnectorConfig connectorConfig = new ProvisioningConnectorConfig();
                connectorConfig.setName(base64URLDecode(connector.getConnectorId()));
                connectorConfig.setEnabled(connector.getIsEnabled());

                List<org.wso2.carbon.identity.api.server.idp.v1.model.Property> connectorProperties = connector
                        .getProperties();
                if (connectorProperties != null) {
                    if (!areAllDistinct(connectorProperties)) {
                        throw handleException(Response.Status.BAD_REQUEST,
                                Constants.ErrorMessage.ERROR_CODE_INVALID_INPUT, " Duplicate properties are found in " +
                                        "the request.");
                    }
                    List<Property> properties = connectorProperties.stream()
                            .map(propertyToInternal)
                            .collect(Collectors.toList());
                    connectorConfig.setProvisioningProperties(properties.toArray(new Property[0]));
                }
                connectorConfigs.add(connectorConfig);

                if (StringUtils.equals(defaultConnectorId, connector.getConnectorId())) {
                    defaultConnectorConfig = connectorConfig;
                }
            }

            if (StringUtils.isNotBlank(defaultConnectorId) && defaultConnectorConfig == null) {
                throw handleException(Response.Status.BAD_REQUEST, Constants.ErrorMessage
                        .ERROR_CODE_INVALID_DEFAULT_OUTBOUND_CONNECTOR, null);
            }

            idp.setProvisioningConnectorConfigs(connectorConfigs.toArray(new ProvisioningConnectorConfig[0]));
            idp.setDefaultProvisioningConnectorConfig(defaultConnectorConfig);
        }
    }

    private void updateJIT(IdentityProvider identityProvider, JustInTimeProvisioning jit) {

        if (jit != null) {
            JustInTimeProvisioning.SchemeEnum schemeEnum = jit.getScheme();

            JustInTimeProvisioningConfig jitConfig = new JustInTimeProvisioningConfig();
            jitConfig.setProvisioningEnabled(jit.getIsEnabled());
            jitConfig.setProvisioningUserStore(jit.getUserstore());
            switch (schemeEnum) {
                case PROMPT_USERNAME_PASSWORD_CONSENT:
                    jitConfig.setModifyUserNameAllowed(true);
                    jitConfig.setPasswordProvisioningEnabled(true);
                    jitConfig.setPromptConsent(true);
                    break;
                case PROMPT_PASSWORD_CONSENT:
                    jitConfig.setModifyUserNameAllowed(false);
                    jitConfig.setPasswordProvisioningEnabled(true);
                    jitConfig.setPromptConsent(true);
                    break;
                case PROMPT_CONSENT:
                    jitConfig.setModifyUserNameAllowed(false);
                    jitConfig.setPasswordProvisioningEnabled(false);
                    jitConfig.setPromptConsent(true);
                    break;
                case PROVISION_SILENTLY:
                    jitConfig.setModifyUserNameAllowed(false);
                    jitConfig.setPasswordProvisioningEnabled(false);
                    jitConfig.setPromptConsent(false);
                    break;
            }
            jitConfig.setAssociateLocalUserEnabled(jit.getAssociateLocalUser());
            jitConfig.setAttributeSyncMethod(jit.getAttributeSyncMethod().toString());
            identityProvider.setJustInTimeProvisioningConfig(jitConfig);
        }
    }

    private void updateFederatedAssociation(IdentityProvider identityProvider, AssociationRequest associationRequest) {

        if (associationRequest != null) {

            if (associationRequest.getIsEnabled() == null ||
                    associationRequest.getLookupAttribute().isEmpty()) {
                throw handleException(Response.Status.BAD_REQUEST,
                        Constants.ErrorMessage.ERROR_CODE_INVALID_INPUT,
                        "Provided request body content is not in the expected format.");
            }

            FederatedAssociationConfig associationConfig = new FederatedAssociationConfig();
            associationConfig.setEnabled(associationRequest.getIsEnabled());
            associationConfig.setLookupAttributes(associationRequest.getLookupAttribute().toArray(new String[0]));
            identityProvider.setFederatedAssociationConfig(associationConfig);
        }
    }

    private void updateClaims(IdentityProvider idp, Claims claims) {

        if (claims != null) {
            ClaimConfig claimConfig = new ClaimConfig();
            List<ClaimMapping> claimMappings = new ArrayList<>();
            List<org.wso2.carbon.identity.application.common.model.Claim> idpClaims = new ArrayList<>();

            if (CollectionUtils.isNotEmpty(claims.getMappings())) {
                claimConfig.setLocalClaimDialect(false);
                for (org.wso2.carbon.identity.api.server.idp.v1.model.ClaimMapping mapping : claims.getMappings()) {

                    String idpClaimUri = mapping.getIdpClaim();
                    String localClaimUri = mapping.getLocalClaim().getUri();

                    ClaimMapping internalMapping = new ClaimMapping();
                    org.wso2.carbon.identity.application.common.model.Claim remoteClaim = new org.wso2.carbon.identity
                            .application.common.model.Claim();
                    remoteClaim.setClaimUri(idpClaimUri);

                    org.wso2.carbon.identity.application.common.model.Claim localClaim = new org.wso2.carbon.identity
                            .application.common.model.Claim();
                    localClaim.setClaimUri(localClaimUri);

                    internalMapping.setRemoteClaim(remoteClaim);
                    internalMapping.setLocalClaim(localClaim);
                    claimMappings.add(internalMapping);
                    idpClaims.add(remoteClaim);
                }
            } else {
                claimConfig.setLocalClaimDialect(true);
            }

            if ((claims.getUserIdClaim() != null)) {
                claimConfig.setUserClaimURI(claims.getUserIdClaim().getUri());
            }
            if (claims.getRoleClaim() != null) {
                claimConfig.setRoleClaimURI(claims.getRoleClaim().getUri());
            }
            List<ProvisioningClaim> provClaims = claims.getProvisioningClaims();
            if (provClaims != null) {
                for (ProvisioningClaim provClaim : provClaims) {
                    String provClaimUri = provClaim.getClaim().getUri();
                    if (CollectionUtils.isNotEmpty(claims.getMappings())) {
                        for (ClaimMapping internalMapping : claimMappings) {

                            if (StringUtils.equals(provClaimUri, internalMapping.getRemoteClaim().getClaimUri())) {
                                internalMapping.setDefaultValue(provClaim.getDefaultValue());
                                internalMapping.setRequested(true);
                            }
                        }
                    } else {
                        ClaimMapping internalMapping = new ClaimMapping();
                        org.wso2.carbon.identity.application.common.model.Claim localClaim = new org.wso2.carbon
                                .identity.application.common.model.Claim();
                        localClaim.setClaimUri(provClaimUri);
                        internalMapping.setLocalClaim(localClaim);
                        internalMapping.setDefaultValue(provClaim.getDefaultValue());
                        internalMapping.setRequested(true);
                        claimMappings.add(internalMapping);
                    }
                }
            }
            claimConfig.setClaimMappings(claimMappings.toArray(new ClaimMapping[0]));
            claimConfig.setIdpClaims(idpClaims.toArray(new org.wso2.carbon.identity.application.common.model.Claim[0]));
            idp.setClaimConfig(claimConfig);
        }
    }

    private void updateRoles(IdentityProvider idp, Roles roles) {

        if (roles != null) {
            PermissionsAndRoleConfig permissionsAndRoleConfig = new PermissionsAndRoleConfig();

            List<org.wso2.carbon.identity.api.server.idp.v1.model.RoleMapping> mappings = roles.getMappings();
            List<RoleMapping> internalMappings = new ArrayList<>();

            List<String> idpRoles = new ArrayList<>();

            if (mappings != null) {
                for (org.wso2.carbon.identity.api.server.idp.v1.model.RoleMapping mapping : mappings) {

                    RoleMapping internalMapping = new RoleMapping();

                    internalMapping.setLocalRole(new LocalRole(mapping.getLocalRole()));
                    internalMapping.setRemoteRole(mapping.getIdpRole());
                    idpRoles.add(mapping.getIdpRole());
                    internalMappings.add(internalMapping);
                }
            }
            permissionsAndRoleConfig.setIdpRoles(idpRoles.toArray(new String[0]));
            permissionsAndRoleConfig.setRoleMappings(internalMappings.toArray(new RoleMapping[0]));
            idp.setPermissionAndRoleConfig(permissionsAndRoleConfig);
            idp.setProvisioningRole(StringUtils.join(roles.getOutboundProvisioningRoles(), ","));
        }
    }

    /**
     * Update groups of the identity provider.
     *
     * @param idp    Identity Provider to be updated.
     * @param groups Groups returned from the request.
     */
    private void updateGroups(IdentityProvider idp, List<IdPGroup> groups) {

        if (groups == null || groups.isEmpty()) {
            idp.setIdPGroupConfig(null);
            return;
        }
        /*
         * For each group in groups, check if the group name is not null or empty and then add it to the idPGroupConfig
         * array.
         */
        idp.setIdPGroupConfig(groups
                .stream()
                .filter(group -> StringUtils.isNotBlank(group.getName()))
                .map(group -> {
                    org.wso2.carbon.identity.application.common.model.IdPGroup idPGroup =
                            new org.wso2.carbon.identity.application.common.model.IdPGroup();
                    idPGroup.setIdpGroupName(group.getName());
                    if (StringUtils.isNotBlank(group.getId())) {
                        idPGroup.setIdpGroupId(group.getId());
                    }
                    return idPGroup;
                }).toArray(org.wso2.carbon.identity.application.common.model.IdPGroup[]::new));
    }

    private Function<org.wso2.carbon.identity.api.server.idp.v1.model.Property, Property> propertyToInternal
            = apiProperty -> {

        Property property = new Property();
        property.setName(apiProperty.getKey());
        property.setValue(apiProperty.getValue());
        if (StringUtils.equals(GOOGLE_PRIVATE_KEY, apiProperty.getKey())) {
            property.setType(IdentityApplicationConstants.ConfigElements.PROPERTY_TYPE_BLOB);
        }
        return property;
    };

    private Function<Property, org.wso2.carbon.identity.api.server.idp.v1.model.Property> propertyToExternal
            = property -> {

        org.wso2.carbon.identity.api.server.idp.v1.model.Property apiProperty = new org.wso2.carbon.identity.api
                .server.idp.v1.model.Property();
        apiProperty.setKey(property.getName());
        apiProperty.setValue(property.getValue());
        return apiProperty;
    };

    private IdentityProvider createIDP(IdentityProviderPOSTRequest identityProviderPOSTRequest)
            throws IdentityProviderManagementClientException {

        String idpJWKSUri = null;
        IdentityProvider idp = new IdentityProvider();
        idp.setIdentityProviderName(identityProviderPOSTRequest.getName());
        idp.setAlias(identityProviderPOSTRequest.getAlias());
        idp.setTemplateId(identityProviderPOSTRequest.getTemplateId());
        idp.setPrimary(false);
        idp.setIdentityProviderDescription(identityProviderPOSTRequest.getDescription());
        idp.setHomeRealmId(identityProviderPOSTRequest.getHomeRealmIdentifier());
        idp.setImageUrl(identityProviderPOSTRequest.getImage());
        if (identityProviderPOSTRequest.getCertificate() != null && StringUtils.isNotBlank(identityProviderPOSTRequest
                .getCertificate().getJwksUri())) {
            idpJWKSUri = identityProviderPOSTRequest.getCertificate().getJwksUri();
        } else if (identityProviderPOSTRequest.getCertificate() != null && identityProviderPOSTRequest.getCertificate()
                .getCertificates() != null) {
            List<String> certificates = new ArrayList<>();
            for (int certificateNo = 0; certificateNo < identityProviderPOSTRequest.getCertificate()
                    .getCertificates().size(); certificateNo++) {
                if (identityProviderPOSTRequest.getCertificate()
                        .getCertificates().get(certificateNo).startsWith(IdentityUtil.PEM_BEGIN_CERTFICATE)) {
                    certificates.add(identityProviderPOSTRequest.getCertificate()
                            .getCertificates().get(certificateNo));
                } else {
                    try {
                        certificates.add(base64Decode(identityProviderPOSTRequest.getCertificate()
                                .getCertificates().get(certificateNo)));
                    } catch (IllegalArgumentException e) {
                        throw handleException(Response.Status.BAD_REQUEST,
                                Constants.ErrorMessage.ERROR_CODE_INVALID_CERTIFICATE_FORMAT, null);
                    }

                }
            }
            idp.setCertificate(base64Encode(StringUtils.join(certificates, "")));
        }
        idp.setFederationHub(identityProviderPOSTRequest.getIsFederationHub());

        updateFederatedAuthenticatorConfig(idp, identityProviderPOSTRequest.getFederatedAuthenticators(),
                IdpOperation.CREATION);
        if (identityProviderPOSTRequest.getProvisioning() != null) {
            updateOutboundConnectorConfig(idp, identityProviderPOSTRequest.getProvisioning().getOutboundConnectors());
            updateJIT(idp, identityProviderPOSTRequest.getProvisioning().getJit());
        }

        if (identityProviderPOSTRequest.getImplicitAssociation() != null) {
            updateFederatedAssociation(idp, identityProviderPOSTRequest.getImplicitAssociation());
        }
        updateClaims(idp, identityProviderPOSTRequest.getClaims());
        updateRoles(idp, identityProviderPOSTRequest.getRoles());
        updateGroups(idp, identityProviderPOSTRequest.getGroups());

        List<IdentityProviderProperty> idpProperties = new ArrayList<>();
        if (StringUtils.isNotBlank(idpJWKSUri)) {
            IdentityProviderProperty jwksProperty = new IdentityProviderProperty();
            jwksProperty.setName(Constants.JWKS_URI);
            jwksProperty.setValue(idpJWKSUri);
            idpProperties.add(jwksProperty);
        }
        // IDP issuer name can be empty. Hence, no need to check for blank value.
        IdentityProviderProperty idpIssuerProperty = new IdentityProviderProperty();
        idpIssuerProperty.setName(Constants.IDP_ISSUER_NAME);
        idpIssuerProperty.setValue(identityProviderPOSTRequest.getIdpIssuerName());
        idpProperties.add(idpIssuerProperty);
        idp.setIdpProperties(idpProperties.toArray(new IdentityProviderProperty[0]));
        return idp;
    }

    private IdentityProviderListResponse createIDPListResponse(IdpSearchResult idpSearchResult,
                                                               List<String> requestedAttributeList) {

        List<IdentityProvider> idps = idpSearchResult.getIdPs();
        IdentityProviderListResponse listResponse = new IdentityProviderListResponse();
        if (CollectionUtils.isNotEmpty(idps)) {
            List<IdentityProviderListItem> identityProviderList = new ArrayList<>();
            for (IdentityProvider idp : idps) {
                IdentityProviderListItem listItem = populateIDPListResponse(idp, requestedAttributeList);
                identityProviderList.add(listItem);
            }
            listResponse.setIdentityProviders(identityProviderList);
            listResponse.setCount(idps.size());
        } else {
            listResponse.setCount(0);
        }

        listResponse.setTotalResults(idpSearchResult.getTotalIDPCount());
        listResponse.setStartIndex(idpSearchResult.getOffSet() + 1);
        listResponse.setLinks(createLinks(V1_API_PATH_COMPONENT + IDP_PATH_COMPONENT, idpSearchResult
                        .getLimit(), idpSearchResult.getOffSet(), idpSearchResult.getTotalIDPCount(), idpSearchResult
                .getFilter()));
        return listResponse;
    }

    private IdentityProviderListItem populateIDPListResponse(IdentityProvider idp,
                                                             List<String> requestedAttributeList) {

        IdentityProviderListItem identityProviderListItem = new IdentityProviderListItem();
        // Create IDP basic information.
        identityProviderListItem.setId(idp.getResourceId());
        identityProviderListItem.setName(idp.getIdentityProviderName());
        identityProviderListItem.setDescription(idp.getIdentityProviderDescription());
        identityProviderListItem.setIsEnabled(idp.isEnable());
        identityProviderListItem.setImage(idp.getImageUrl());
        identityProviderListItem.setSelf(
                ContextLoader.buildURIForBody(String.format(V1_API_PATH_COMPONENT + IDP_PATH_COMPONENT + "/%s",
                        idp.getResourceId())).toString());

        // Populate optional IDP information if exists.
        if (requestedAttributeList != null) {
            for (String requestedAttribute : requestedAttributeList) {
                switch (requestedAttribute) {
                    case Constants.IS_PRIMARY:
                        identityProviderListItem.setIsPrimary(idp.isPrimary());
                        break;
                    case Constants.IS_FEDERATION_HUB:
                        identityProviderListItem.setIsFederationHub(idp.isFederationHub());
                        break;
                    case Constants.HOME_REALM_IDENTIFIER:
                        identityProviderListItem.setHomeRealmIdentifier(idp.getHomeRealmId());
                        break;
                    case Constants.CERTIFICATE:
                        identityProviderListItem.setCertificate(createIDPCertificate(idp));
                        break;
                    case Constants.ALIAS:
                        identityProviderListItem.setAlias(idp.getAlias());
                        break;
                    case Constants.CLAIMS:
                        identityProviderListItem.setClaims(createClaimResponse(idp.getClaimConfig()));
                        break;
                    case Constants.ROLES:
                        identityProviderListItem.setRoles(createRoleResponse(idp));
                        break;
                    case Constants.GROUPS:
                        identityProviderListItem.setGroups(createGroupResponse(idp));
                        break;
                    case Constants.FEDERATED_AUTHENTICATORS:
                        identityProviderListItem.setFederatedAuthenticators(createFederatedAuthenticatorResponse(idp));
                        break;
                    case Constants.PROVISIONING:
                        identityProviderListItem.setProvisioning(createProvisioningResponse(idp));
                        break;
                    default:
                        if (log.isDebugEnabled()) {
                            log.debug("Unknown requested attribute: " + requestedAttribute);
                        }
                        break;
                }
            }
        }
        return identityProviderListItem;
    }

    private List<Link> createLinks(String url, int limit, int offset, int total, String filter) {

        List<Link> links = new ArrayList<>();

        // Next Link
        if (limit > 0 && offset >= 0 && (offset + limit) < total) {
            links.add(buildPageLink(new StringBuilder(url), Constants.PAGE_LINK_REL_NEXT, (offset +
                    limit), limit, filter));
        }

        // Previous Link
        // Previous link matters only if offset and limit are greater than 0.
        if (offset > 0 && limit > 0) {
            if ((offset - limit) >= 0) { // A previous page of size 'limit' exists
                links.add(buildPageLink(new StringBuilder(url), Constants.PAGE_LINK_REL_PREVIOUS,
                        calculateOffsetForPreviousLink(offset, limit, total), limit, filter));
            } else { // A previous page exists but it's size is less than the specified limit
                links.add(buildPageLink(new StringBuilder(url), Constants.PAGE_LINK_REL_PREVIOUS, 0, offset, filter));
            }
        }

        return links;
    }

    private int calculateOffsetForPreviousLink(int offset, int limit, int total) {

        int newOffset = (offset - limit);
        if (newOffset < total) {
            return newOffset;
        }

        return calculateOffsetForPreviousLink(newOffset, limit, total);
    }

    private Link buildPageLink(StringBuilder url, String rel, int offset, int limit, String filter) {

        if (StringUtils.isNotBlank(filter)) {
            try {
                url.append(String.format(Constants.PAGINATION_WITH_FILTER_LINK_FORMAT, offset, limit, URLEncoder
                        .encode(filter, StandardCharsets.UTF_8.name())));
            } catch (UnsupportedEncodingException e) {
                throw handleException(Response.Status.INTERNAL_SERVER_ERROR, Constants.ErrorMessage
                        .ERROR_CODE_BUILDING_LINKS, "Unable to url-encode filter: " + filter);
            }
        } else {
            url.append(String.format(Constants.PAGINATION_LINK_FORMAT, offset, limit));
        }
        return new Link().rel(rel).href(ContextLoader.buildURIForBody((url.toString())).toString());
    }

    private IdentityProviderResponse createIDPResponse(IdentityProvider identityProvider) {

        IdentityProviderResponse idpResponse = new IdentityProviderResponse();
        populateIDPBasicInfo(idpResponse, identityProvider);
        idpResponse.setTemplateId(identityProvider.getTemplateId());
        idpResponse.setCertificate(createIDPCertificate(identityProvider));
        idpResponse.setClaims(createClaimResponse(identityProvider.getClaimConfig()));
        idpResponse.setRoles(createRoleResponse(identityProvider));
        idpResponse.setGroups(createGroupResponse(identityProvider));
        idpResponse.setFederatedAuthenticators(createFederatedAuthenticatorResponse(identityProvider));
        idpResponse.setProvisioning(createProvisioningResponse(identityProvider));
        idpResponse.setImplicitAssociation(createAssociationResponse(identityProvider));
        return idpResponse;
    }

    private void populateIDPBasicInfo(IdentityProviderResponse idpResponse, IdentityProvider identityProvider) {

        idpResponse.setId(identityProvider.getResourceId());
        idpResponse.setIsEnabled(identityProvider.isEnable());
        idpResponse.setIsPrimary(identityProvider.isPrimary());
        idpResponse.setName(identityProvider.getIdentityProviderName());
        idpResponse.setDescription(identityProvider.getIdentityProviderDescription());
        idpResponse.setAlias(identityProvider.getAlias());
        idpResponse.setIdpIssuerName(getIDPIssuerName(identityProvider));
        idpResponse.setImage(identityProvider.getImageUrl());
        idpResponse.setIsFederationHub(identityProvider.isFederationHub());
        idpResponse.setHomeRealmIdentifier(identityProvider.getHomeRealmId());
    }

    private String getIDPIssuerName(IdentityProvider identityProvider) {

        IdentityProviderProperty[] idpProperties = identityProvider.getIdpProperties();
        for (IdentityProviderProperty property : idpProperties) {
            if (Constants.IDP_ISSUER_NAME.equals(property.getName())) {
                return property.getValue();
            }
        }
        return null;
    }

    private Certificate createIDPCertificate(IdentityProvider identityProvider) {

        Certificate certificate = null;
        IdentityProviderProperty[] idpProperties = identityProvider.getIdpProperties();
        for (IdentityProviderProperty property : idpProperties) {
            if (Constants.JWKS_URI.equals(property.getName())) {
                certificate = new Certificate().jwksUri(property.getValue());
                break;
            }
        }
        if (certificate == null && ArrayUtils.isNotEmpty(identityProvider.getCertificateInfoArray())) {
            List<String> certificates = new ArrayList<>();
            for (CertificateInfo certInfo : identityProvider.getCertificateInfoArray()) {
                certificates.add(certInfo.getCertValue());
            }
            certificate = new Certificate().certificates(certificates);
        }
        return certificate;
    }

    private Claims createClaimResponse(ClaimConfig claimConfig) {

        Claims apiClaims = new Claims();
        List<org.wso2.carbon.identity.api.server.idp.v1.model.ClaimMapping> apiMappings = new ArrayList<>();
        List<ProvisioningClaim> provClaims = new ArrayList<>();

        if (claimConfig != null) {
            if (claimConfig.getClaimMappings() != null) {
                for (ClaimMapping mapping : claimConfig.getClaimMappings()) {
                    org.wso2.carbon.identity.api.server.idp.v1.model.ClaimMapping apiMapping = new org.wso2.carbon
                            .identity.api.server.idp.v1.model.ClaimMapping();

                    Claim localClaim = new Claim();
                    localClaim.setId(base64URLEncode(mapping.getLocalClaim().getClaimUri()));
                    localClaim.setUri(mapping.getLocalClaim().getClaimUri());
                    localClaim.setDisplayName(getDisplayNameOfLocalClaim(mapping.getLocalClaim().getClaimUri()));
                    apiMapping.setLocalClaim(localClaim);
                    // As the provisioning claims are added as claim mappings without any remote claim internally, we
                    // need to validate this here.
                    if (StringUtils.isNotBlank(mapping.getRemoteClaim().getClaimUri())) {
                        apiMapping.setIdpClaim(mapping.getRemoteClaim().getClaimUri());
                        apiMappings.add(apiMapping);
                    }

                    if (StringUtils.isNotBlank(mapping.getDefaultValue()) && mapping.isRequested()) {
                        ProvisioningClaim provClaimResponse = new ProvisioningClaim();
                        Claim provClaim = new Claim();
                        if (StringUtils.isNotBlank(mapping.getRemoteClaim().getClaimUri())) {
                            provClaim.setUri(mapping.getRemoteClaim().getClaimUri());
                        } else {
                            provClaim.setId(base64URLEncode(mapping.getLocalClaim().getClaimUri()));
                            provClaim.setUri(mapping.getLocalClaim().getClaimUri());
                            provClaim.setDisplayName(getDisplayNameOfLocalClaim(mapping.getLocalClaim().getClaimUri()));
                        }
                        provClaimResponse.setClaim(provClaim);
                        provClaimResponse.setDefaultValue(mapping.getDefaultValue());
                        provClaims.add(provClaimResponse);
                    }
                }
            }

            Claim roleClaim = new Claim();
            if (getLocalClaim(claimConfig.getRoleClaimURI()) != null) {
                roleClaim.setId(base64URLEncode(claimConfig.getRoleClaimURI()));
                roleClaim.setDisplayName(getDisplayNameOfLocalClaim(claimConfig.getRoleClaimURI()));
            }
            roleClaim.setUri(claimConfig.getRoleClaimURI());
            apiClaims.setRoleClaim(roleClaim);

            Claim userIdClaim = new Claim();
            if (getLocalClaim(claimConfig.getUserClaimURI()) != null) {
                userIdClaim.setId(base64URLEncode(claimConfig.getUserClaimURI()));
                userIdClaim.setDisplayName(getDisplayNameOfLocalClaim(claimConfig.getUserClaimURI()));
            }
            userIdClaim.setUri(claimConfig.getUserClaimURI());
            apiClaims.setUserIdClaim(userIdClaim);
        }

        apiClaims.setMappings(apiMappings);
        apiClaims.setProvisioningClaims(provClaims);
        return apiClaims;
    }

    private Roles createRoleResponse(IdentityProvider identityProvider) {

        PermissionsAndRoleConfig permissionsAndRoleConfig = identityProvider.getPermissionAndRoleConfig();
        Roles roleConfig = new Roles();

        List<org.wso2.carbon.identity.api.server.idp.v1.model.RoleMapping> apiRoleMappings = new ArrayList<>();

        if (permissionsAndRoleConfig != null) {
            if (permissionsAndRoleConfig.getRoleMappings() != null) {
                for (RoleMapping roleMapping : permissionsAndRoleConfig.getRoleMappings()) {
                    org.wso2.carbon.identity.api.server.idp.v1.model.RoleMapping apiRoleMapping = new org.wso2.carbon
                            .identity.api.server.idp.v1.model.RoleMapping();
                    apiRoleMapping.setIdpRole(roleMapping.getRemoteRole());
                    apiRoleMapping.setLocalRole(IdentityUtil.addDomainToName(roleMapping
                            .getLocalRole().getLocalRoleName(), roleMapping.getLocalRole().getUserStoreId()));
                    apiRoleMappings.add(apiRoleMapping);
                }
            }
        }
        roleConfig.setMappings(apiRoleMappings);

        String provRoles = identityProvider.getProvisioningRole();
        if (StringUtils.isNotBlank(provRoles)) {
            roleConfig.setOutboundProvisioningRoles(Arrays.asList(provRoles.split(",")));
        }
        return roleConfig;
    }

    /**
     * Create IdP Groups response for the Identity Provider.
     *
     * @param identityProvider Identity Provider.
     * @return Groups of the Identity Provider.
     */
    private List<IdPGroup> createGroupResponse(IdentityProvider identityProvider) {

        org.wso2.carbon.identity.application.common.model.IdPGroup[] idPGroupConfig =
                identityProvider.getIdPGroupConfig();
        List<IdPGroup> groupConfigAPIModel = new ArrayList<>();
        if (idPGroupConfig != null) {
            Arrays.stream(idPGroupConfig).forEach(idPGroup -> {
                IdPGroup idPGroupAPIModel = new IdPGroup();
                idPGroupAPIModel.setName(idPGroup.getIdpGroupName());
                idPGroupAPIModel.setId(idPGroup.getIdpGroupId());
                groupConfigAPIModel.add(idPGroupAPIModel);
            });
        }
        return groupConfigAPIModel;
    }

    private FederatedAuthenticatorListResponse createFederatedAuthenticatorResponse(IdentityProvider idp) {

        FederatedAuthenticatorConfig[] fedAuthConfigs = idp.getFederatedAuthenticatorConfigs();
        FederatedAuthenticatorListResponse fedAuthIDPResponse = new FederatedAuthenticatorListResponse();
        List<FederatedAuthenticatorListItem> authenticators =
                FederatedAuthenticatorConfigBuilderFactory.build(fedAuthConfigs, idp.getResourceId());
        fedAuthIDPResponse.setDefaultAuthenticatorId(idp.getDefaultAuthenticatorConfig() != null ? base64URLEncode(idp
                .getDefaultAuthenticatorConfig().getName()) : null);
        fedAuthIDPResponse.setAuthenticators(authenticators);
        return fedAuthIDPResponse;
    }

    private ProvisioningResponse createProvisioningResponse(IdentityProvider idp) {

        ProvisioningResponse provisioningResponse = new ProvisioningResponse();
        provisioningResponse.setJit(createJITResponse(idp));
        provisioningResponse.setOutboundConnectors(createOutboundProvisioningResponse(idp));
        return provisioningResponse;
    }

    private AssociationResponse createAssociationResponse(IdentityProvider idp) {

        AssociationResponse associationResponse = new AssociationResponse();
        associationResponse.setIsEnabled(idp.getFederatedAssociationConfig().isEnabled());
        associationResponse.setLookupAttribute(
                Arrays.asList(idp.getFederatedAssociationConfig().getLookupAttributes()));;
        return associationResponse;
    }

    private OutboundConnectorListResponse createOutboundProvisioningResponse(IdentityProvider idp) {

        ProvisioningConnectorConfig[] connectorConfigs = idp.getProvisioningConnectorConfigs();
        List<OutboundConnectorListItem> connectors = new ArrayList<>();
        if (connectorConfigs != null) {
            for (ProvisioningConnectorConfig connectorConfig : connectorConfigs) {
                OutboundConnectorListItem connectorListItem = new OutboundConnectorListItem();
                connectorListItem.setConnectorId(base64URLEncode(connectorConfig.getName()));
                connectorListItem.setName(connectorConfig.getName());
                connectorListItem.setIsEnabled(connectorConfig.isEnabled());
                connectorListItem.setSelf(
                        ContextLoader.buildURIForBody(String.format(V1_API_PATH_COMPONENT + IDP_PATH_COMPONENT +
                                        "/%s/provisioning/outbound-connectors/%s", idp.getResourceId(),
                                base64URLEncode(connectorConfig.getName())))
                                .toString());
                connectors.add(connectorListItem);
            }
        }
        OutboundConnectorListResponse outboundConnectorListResponse = new OutboundConnectorListResponse();
        outboundConnectorListResponse.setDefaultConnectorId(idp.getDefaultProvisioningConnectorConfig() != null ?
                base64URLEncode(idp.getDefaultProvisioningConnectorConfig().getName()) : null);
        outboundConnectorListResponse.setConnectors(connectors);
        return outboundConnectorListResponse;
    }

    private JustInTimeProvisioning createJITResponse(IdentityProvider idp) {

        JustInTimeProvisioning jitConfig = new JustInTimeProvisioning();
        JustInTimeProvisioningConfig jitProvisionConfig = idp.getJustInTimeProvisioningConfig();
        if (jitProvisionConfig != null) {
            jitConfig.setIsEnabled(jitProvisionConfig.isProvisioningEnabled());
            JustInTimeProvisioning.SchemeEnum provisioningType = getProvisioningType(jitProvisionConfig);
            jitConfig.setScheme(provisioningType);
            String provisioningUserStore = StringUtils.isNotBlank(jitProvisionConfig.getProvisioningUserStore()) ?
                    jitProvisionConfig.getProvisioningUserStore() : IdentityUtil.getPrimaryDomainName();
            jitConfig.setUserstore(provisioningUserStore);
            jitConfig.setAssociateLocalUser(jitProvisionConfig.isAssociateLocalUserEnabled());
            String attributeSyncMethod = StringUtils.isNotBlank(jitProvisionConfig.getAttributeSyncMethod()) ?
                    jitProvisionConfig.getAttributeSyncMethod() : FrameworkConstants.OVERRIDE_ALL;
            jitConfig.setAttributeSyncMethod(JustInTimeProvisioning.AttributeSyncMethodEnum
                    .valueOf(attributeSyncMethod));
        }
        return jitConfig;
    }

    private JustInTimeProvisioning.SchemeEnum getProvisioningType(JustInTimeProvisioningConfig jitProvisionConfig) {

        boolean modifyUsername = jitProvisionConfig.isModifyUserNameAllowed();
        boolean passwordProvision = jitProvisionConfig.isPasswordProvisioningEnabled();
        boolean promptConsent = jitProvisionConfig.isPromptConsent();

        if (modifyUsername && passwordProvision && promptConsent) {
            return JustInTimeProvisioning.SchemeEnum.PROMPT_USERNAME_PASSWORD_CONSENT;
        } else if (passwordProvision && promptConsent) {
            return JustInTimeProvisioning.SchemeEnum.PROMPT_PASSWORD_CONSENT;
        } else if (promptConsent) {
            return JustInTimeProvisioning.SchemeEnum.PROMPT_CONSENT;
        }
        return JustInTimeProvisioning.SchemeEnum.PROVISION_SILENTLY;
    }

    private Function<SubProperty, MetaProperty> subPropertyToExternalMeta = property -> {

        MetaProperty metaSubProperty = new MetaProperty();
        metaSubProperty.setKey(property.getName());
        metaSubProperty.setType(getMetaPropertyType(property.getType()));
        metaSubProperty.setIsMandatory(property.isRequired());
        metaSubProperty.setIsConfidential(property.isConfidential());
        metaSubProperty.setDescription(property.getDescription());
        metaSubProperty.setDisplayName(property.getDisplayName());
        metaSubProperty.setDisplayOrder(property.getDisplayOrder());
        metaSubProperty.setRegex(property.getRegex() != null ? property.getRegex() : ".*");
        metaSubProperty.setOptions(Arrays.asList(property.getOptions()));
        metaSubProperty.setDefaultValue(property.getDefaultValue() != null ? property.getDefaultValue() : "");
        return metaSubProperty;
    };

    private Function<Property, MetaProperty> propertyToExternalMeta = property -> {

        MetaProperty metaProperty = new MetaProperty();
        metaProperty.setKey(property.getName());
        metaProperty.setType(getMetaPropertyType(property.getType()));
        metaProperty.setIsMandatory(property.isRequired());
        metaProperty.setIsConfidential(property.isConfidential());
        metaProperty.setDescription(property.getDescription());
        metaProperty.setDisplayName(property.getDisplayName());
        metaProperty.setDisplayOrder(property.getDisplayOrder());
        metaProperty.setRegex(property.getRegex() != null ? property.getRegex() : ".*");
        metaProperty.setOptions(Arrays.asList(property.getOptions()));
        metaProperty.setDefaultValue(property.getDefaultValue() != null ? property.getDefaultValue() : "");
        List<MetaProperty> metaSubProperties = Arrays.stream(property.getSubProperties()).map(subPropertyToExternalMeta)
                .collect(Collectors.toList());
        metaProperty.setSubProperties(metaSubProperties);
        return metaProperty;
    };

    /**
     * Get MetaProperty Type Enum for the internal property type.
     *
     * @param propertyType Internal property type.
     * @return MetaProperty.TypeEnum.
     */
    private MetaProperty.TypeEnum getMetaPropertyType(String propertyType) {

        MetaProperty.TypeEnum typeEnum = MetaProperty.TypeEnum.STRING;

        if (StringUtils.isNotBlank(propertyType)) {
            switch (propertyType) {
                case "string":
                    typeEnum = MetaProperty.TypeEnum.STRING;
                    break;
                case "boolean":
                    typeEnum = MetaProperty.TypeEnum.BOOLEAN;
                    break;
                case "integer":
                    typeEnum = MetaProperty.TypeEnum.INTEGER;
                    break;
                default:
                    typeEnum = MetaProperty.TypeEnum.STRING;
            }
        }
        return typeEnum;
    }

    /**
     * Retrieves display name property of Local claim identified by local claim uri.
     *
     * @param claimUri Local claim uri.
     * @return Display Name.
     */
    private String getDisplayNameOfLocalClaim(String claimUri) {

        LocalClaim localClaim = getLocalClaim(claimUri);
        if (localClaim != null) {
            Map<String, String> localClaimProperties = localClaim.getClaimProperties();
            return localClaimProperties.get(Constants.PROP_DISPLAY_NAME);
        } else {
            throw handleException(Response.Status.BAD_REQUEST,
                    Constants.ErrorMessage.ERROR_CODE_INVALID_LOCAL_CLAIM_ID, claimUri);
        }
    }

    /**
     * Returns internal LocalClaim given local claim URI.
     *
     * @param claimUri URI of the required local claim.
     * @return Local Claim.
     */
    private LocalClaim getLocalClaim(String claimUri) {

        LocalClaim localClaim;
        try {
            List<LocalClaim> localClaimList = claimMetadataManagementService.getLocalClaims(ContextLoader
                    .getTenantDomainFromContext());

            localClaim = extractLocalClaimFromClaimList(claimUri, localClaimList);
        } catch (ClaimMetadataException e) {
            throw handleException(Response.Status.BAD_REQUEST,
                    Constants.ErrorMessage.ERROR_CODE_INVALID_LOCAL_CLAIM_ID, claimUri);
        }
        return localClaim;
    }

    /**
     * Extracts the LocalClaim corresponding to the given claim uri.
     *
     * @param claimURI  Local claim uri.
     * @param claimList Local claim list.
     * @return LocalClaim.
     */
    private LocalClaim extractLocalClaimFromClaimList(String claimURI, List<LocalClaim> claimList) {

        for (LocalClaim claim : claimList) {
            if (StringUtils.equals(claim.getClaimURI(), claimURI)) {
                return claim;
            }
        }
        return null;
    }

    /**
     * Create a duplicate of the input Identity Provider.
     *
     * @param idP Identity Provider.
     * @return Clone of IDP.
     */
    private IdentityProvider createIdPClone(IdentityProvider idP) {

        Gson gson = new Gson();
        IdentityProvider clonedIdentityProvider = gson.fromJson(gson.toJson(idP), IdentityProvider.class);
        if (idP.getFederatedAuthenticatorConfigs().length == 1 &&
                idP.getFederatedAuthenticatorConfigs()[0].getDefinedByType() == DefinedByType.USER) {
            UserDefinedFederatedAuthenticatorConfig clonedFedAuth = gson.fromJson(gson.toJson(
                    idP.getFederatedAuthenticatorConfigs()[0]), UserDefinedFederatedAuthenticatorConfig.class);
            clonedIdentityProvider.setFederatedAuthenticatorConfigs(new FederatedAuthenticatorConfig[]{clonedFedAuth});
        }
        return clonedIdentityProvider;
    }

    /**
     * Creates a clone of IDP's federated authenticator list to be modified during PUT request.
     *
     * @param authenticatorId Federated authenticator resource ID.
     * @param configs         IDP's authenticator configs.
     * @return Clone of authenticator config array.
     */
    private FederatedAuthenticatorConfig[] createFederatedAuthenticatorArrayClone(String authenticatorId,
                                                                                  FederatedAuthenticatorConfig[]
                                                                                          configs) {

        List<FederatedAuthenticatorConfig> cloneList = new ArrayList<>();
        try {
            for (FederatedAuthenticatorConfig config : configs) {
                cloneList.add((FederatedAuthenticatorConfig) BeanUtils.cloneBean(config));
            }
            return cloneList.toArray(new FederatedAuthenticatorConfig[0]);
        } catch (IllegalAccessException | InstantiationException | InvocationTargetException | NoSuchMethodException
                e) {
            throw handleException(Response.Status.INTERNAL_SERVER_ERROR, Constants.ErrorMessage
                    .ERROR_CODE_ERROR_UPDATING_IDP_AUTHENTICATOR, authenticatorId);
        }
    }

    /**
     * Creates a clone of IDP's provisioning connector config list to be modified during PUT request.
     *
     * @param connectorId Provisioning connector resource ID.
     * @param configs     IDP's provisioning connector configs.
     * @return Clone of connector config array.
     */
    private ProvisioningConnectorConfig[] createProvisioningConnectorArrayClone(String connectorId,
                                                                                ProvisioningConnectorConfig[] configs) {

        List<ProvisioningConnectorConfig> cloneList = new ArrayList<>();
        try {
            for (ProvisioningConnectorConfig config : configs) {
                cloneList.add((ProvisioningConnectorConfig) BeanUtils.cloneBean(config));
            }
            return cloneList.toArray(new ProvisioningConnectorConfig[0]);
        } catch (IllegalAccessException | InstantiationException | InvocationTargetException | NoSuchMethodException
                e) {
            throw handleException(Response.Status.INTERNAL_SERVER_ERROR, Constants.ErrorMessage
                    .ERROR_CODE_ERROR_UPDATING_IDP_CONNECTOR, connectorId);
        }
    }

    /**
     * Return the position indicator of an outbound connector from the configured list of provisioning connector
     * configs of an IDP.
     *
     * @param provConnectorConfigs Outbound provisioning connector configs of IDP.
     * @param connectorId          Outbound provisioning connector ID.
     * @return Position of the specified connector in the config array.
     */
    private int getExistingProvConfigPosition(ProvisioningConnectorConfig[] provConnectorConfigs, String connectorId) {

        int configPos = -1;
        if (provConnectorConfigs != null) {
            for (int i = 0; i < provConnectorConfigs.length; i++) {
                if (StringUtils.equals(provConnectorConfigs[i].getName(), base64URLDecode(connectorId))) {
                    configPos = i;
                    break;
                }
            }
        }
        return configPos;
    }

    /**
     * Verify whether the sent connectorId is a supported outbound connector type by the server.
     *
     * @param connectorId Outbound Provisioning Connector ID.
     * @return whether Connector is a supported one by the server.
     * @throws IdentityProviderManagementException IdentityProviderManagementException.
     */
    private boolean isValidConnector(String connectorId) throws IdentityProviderManagementException {

        ProvisioningConnectorConfig[] supportedConnectorConfigs = identityProviderManager
                .getAllProvisioningConnectors();
        if (supportedConnectorConfigs != null) {
            String connectorName = base64URLDecode(connectorId);
            for (ProvisioningConnectorConfig supportedConfig : supportedConnectorConfigs) {
                if (StringUtils.equals(supportedConfig.getName(), connectorName)) {
                    return true;
                }
            }
        }
        return false;
    }

    private OutboundConnectorListItem createOutboundConnectorListItem(String idPId, ProvisioningConnectorConfig
            config) {

        String connectorId = base64URLEncode(config.getName());
        OutboundConnectorListItem listItem = new OutboundConnectorListItem();
        listItem.setConnectorId(connectorId);
        listItem.setName(config.getName());
        listItem.setIsEnabled(config.isEnabled());
        listItem.setSelf(ContextLoader.buildURIForBody(String.format(V1_API_PATH_COMPONENT + IDP_PATH_COMPONENT +
                "/%s/provisioning/outbound-connectors/%s", idPId, connectorId)).toString());
        return listItem;
    }

    /**
     * Create internal provisioning connector config from external outbound connector PUT request.
     *
     * @param outboundConnectorId Outbound provisioning connector resource ID.
     * @param connector           Outbound provisioning connector PUT request.
     * @return Internal Provisioning connector config.
     */
    private ProvisioningConnectorConfig createProvisioningConnectorConfig(String outboundConnectorId,
                                                                          OutboundConnectorPUTRequest connector) {

        ProvisioningConnectorConfig connectorConfig = new ProvisioningConnectorConfig();
        String connectorName = base64URLDecode(outboundConnectorId);
        connectorConfig.setName(connectorName);
        connectorConfig.setEnabled(connector.getIsEnabled());
        connectorConfig.setBlocking(connector.getBlockingEnabled());
        connectorConfig.setRulesEnabled(connector.getRulesEnabled());

        if (connector.getProperties() == null) {
            throw handleException(Response.Status.BAD_REQUEST,
                    Constants.ErrorMessage.ERROR_CODE_OUTBOUND_PROVISIONING_CONFIG_NOT_FOUND, connectorName);
        }
        List<Property> properties = connector.getProperties().stream()
                .map(propertyToInternal)
                .collect(Collectors.toList());
        connectorConfig.setProvisioningProperties(properties.toArray(new Property[0]));
        return connectorConfig;
    }

    /**
     * Create internal federated authenticator config from external federated authenticator PUT request.
     *
     * @param federatedAuthenticatorId Federated authenticator ID.
     * @param authenticator            Internal federated authenticator config.
     * @return Federated authenticator config of the specified ID.
     */
    private FederatedAuthenticatorConfig updateFederatedAuthenticatorConfig(String federatedAuthenticatorId,
                  FederatedAuthenticatorPUTRequest authenticator) throws IdentityProviderManagementClientException {

        String authenticatorName = getDecodedAuthenticatorName(federatedAuthenticatorId);
        /* As this operation is only for updating an existing authenticator, the definedByType parameter in the PUT
         request is ignored. */
        DefinedByType definedByType = resolveDefinedByTypeToFederatedAuthenticatorUpdate(authenticatorName);

        return FederatedAuthenticatorConfigBuilderFactory.build(authenticator, authenticatorName, definedByType);
    }

    private DefinedByType resolveDefinedByTypeToIdpCreateOperation(
            FederatedAuthenticator.DefinedByEnum definedByType) {

        /* For new federated authenticators:
         If 'definedByType' is not null, use the value provided in the request payload. If not, default to SYSTEM. */
        if (definedByType != null) {
            return DefinedByType.valueOf(definedByType.toString());
        }
        return DefinedByType.SYSTEM;
    }

    private DefinedByType resolveDefinedByTypeToIdpUpdateOperation(String authenticatorName,
                                                                   FederatedAuthenticator.DefinedByEnum definedByType) {

        try {
            /* For existing federated authenticators, disregard any value provided in the request payload.
             Instead, resolve and retrieve the 'definedBy' type of the corresponding existing authenticator.
             If the authenticator config is present in the ApplicationAuthenticatorService list, return its type,
             if not, considering this adding new authenticator and invoke
             resolveDefinedByTypeToCreateFederatedAuthenticator method. */
            FederatedAuthenticatorConfig authenticatorConfig = identityProviderManager.getFederatedAuthenticatorByName(
                    authenticatorName, ContextLoader.getTenantDomainFromContext());
            if (authenticatorConfig != null) {
                return DefinedByType.valueOf(authenticatorConfig.getDefinedByType().toString());
            }
            return resolveDefinedByTypeToIdpCreateOperation(definedByType);
        } catch (IdentityProviderManagementException e) {
            throw handleException(Response.Status.INTERNAL_SERVER_ERROR, Constants.ErrorMessage
                    .ERROR_CODE_ERROR_RETRIEVING_IDP_AUTHENTICATOR, authenticatorName);
        }
    }

    private DefinedByType resolveDefinedByTypeToFederatedAuthenticatorUpdate(String authenticatorName) {

        try {
            /* For existing federated authenticators, disregard any value provided in the request payload.
             Instead, resolve the 'definedBy' type of the corresponding existing authenticator. */
            FederatedAuthenticatorConfig authenticatorConfig = identityProviderManager.getFederatedAuthenticatorByName(
                    authenticatorName, ContextLoader.getTenantDomainFromContext());
            return DefinedByType.valueOf(authenticatorConfig.getDefinedByType().toString());
        } catch (IdentityProviderManagementException e) {
            throw handleException(Response.Status.INTERNAL_SERVER_ERROR, Constants.ErrorMessage
                    .ERROR_CODE_ERROR_RETRIEVING_IDP_AUTHENTICATOR, authenticatorName);
        }
    }

    /**
     * Verify if an authenticator config exists by the provided name on the server.
     *
     * @param federatedAuthenticatorId  Federated Authenticator ID.
     * @param tenantDomain              Tenant domain.
     * @throws IdentityProviderManagementException IdentityProviderManagementException, if authenticator config is not
     * existing in the server.
     */
    private void checkAuthenticatorExistence(String federatedAuthenticatorId, String tenantDomain) throws
            IdentityProviderManagementException {

        FederatedAuthenticatorConfig[] supportedAuthConfigs = identityProviderManager
                .getAllFederatedAuthenticators(tenantDomain);
        if (supportedAuthConfigs != null) {
            String authenticatorName = base64URLDecode(federatedAuthenticatorId);
            for (FederatedAuthenticatorConfig supportedConfig : supportedAuthConfigs) {
                if (StringUtils.equals(supportedConfig.getName(), authenticatorName)) {
                    return;
                }
            }
        }
        throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage
                .ERROR_CODE_AUTHENTICATOR_NOT_FOUND_FOR_IDP, federatedAuthenticatorId);
    }

    /**
     * Return the position indicator of a federated authenticator from the configured list of federated authenticator
     * configs of an IDP.
     *
     * @param fedAuthConfigs           Federated authenticator config array.
     * @param federatedAuthenticatorId Authenticator ID.
     * @return Position of the authenticator identified by federatedAuthenticatorId in the array.
     */
    private int getExistingAuthConfigPosition(FederatedAuthenticatorConfig[] fedAuthConfigs, String
            federatedAuthenticatorId) {

        // configPos used to identify if the federated authenticator is already configured for the IDP.
        int configPos = -1;
        if (fedAuthConfigs != null) {
            for (int i = 0; i < fedAuthConfigs.length; i++) {
                if (StringUtils
                        .equals(fedAuthConfigs[i].getName(), base64URLDecode(federatedAuthenticatorId))) {
                    configPos = i;
                    break;
                }
            }
        }
        return configPos;
    }

    /**
     * Create API Federated Authenticator model using internal FederatedAuthenticatorConfig.
     *
     * @param authenticatorId  Federated Authenticator ID.
     * @param identityProvider Identity Provider information.
     * @return FederatedAuthenticator.
     */
    private FederatedAuthenticator createFederatedAuthenticator(String authenticatorId,
                   IdentityProvider identityProvider) throws IdentityProviderManagementServerException {

        FederatedAuthenticatorConfig[] authConfigs = identityProvider.getFederatedAuthenticatorConfigs();
        if (ArrayUtils.isEmpty(authConfigs)) {
            return null;
        }
        FederatedAuthenticatorConfig config = null;
        boolean isDefaultAuthenticator = false;
        String authenticatorName = base64URLDecode(authenticatorId);
        for (FederatedAuthenticatorConfig authConfig : authConfigs) {
            if (StringUtils.equals(authConfig.getName(), authenticatorName)) {
                config = authConfig;
            }
        }
        if (identityProvider.getDefaultAuthenticatorConfig() != null && StringUtils.equals(identityProvider
                .getDefaultAuthenticatorConfig().getName(), authenticatorName)) {
            isDefaultAuthenticator = true;
        }
        FederatedAuthenticator federatedAuthenticator = new FederatedAuthenticator();
        if (config != null) {
            federatedAuthenticator = FederatedAuthenticatorConfigBuilderFactory.build(config);
            federatedAuthenticator.setAuthenticatorId(authenticatorId);
            federatedAuthenticator.setIsDefault(isDefaultAuthenticator);
        }
        return federatedAuthenticator;
    }

    /**
     * Create external OutboundConnector from Provisioning Config.
     *
     * @param connectorId      Outbound provisioning connector resource ID.
     * @param identityProvider Identity Provider information.
     * @return External outbound connector.
     */
    private OutboundConnector createOutboundConnector(String connectorId, IdentityProvider identityProvider) {

        ProvisioningConnectorConfig[] connectorConfigs = identityProvider.getProvisioningConnectorConfigs();
        if (ArrayUtils.isEmpty(connectorConfigs)) {
            return null;
        }
        ProvisioningConnectorConfig config = null;
        boolean isDefaultConnector = false;
        String connectorName = base64URLDecode(connectorId);
        for (ProvisioningConnectorConfig connectorConfig : connectorConfigs) {
            if (StringUtils.equals(connectorConfig.getName(), connectorName)) {
                config = connectorConfig;
            }
        }
        if (identityProvider.getDefaultProvisioningConnectorConfig() != null && StringUtils.equals(identityProvider
                .getDefaultProvisioningConnectorConfig().getName(), connectorName)) {
            isDefaultConnector = true;
        }

        OutboundConnector outboundConnector = null;
        if (config != null) {
            outboundConnector = new OutboundConnector();
            outboundConnector.setConnectorId(connectorId);
            outboundConnector.setName(config.getName());
            outboundConnector.setIsEnabled(config.isEnabled());
            outboundConnector.setIsDefault(isDefaultConnector);
            outboundConnector.setBlockingEnabled(config.isBlocking());
            outboundConnector.setRulesEnabled(config.isRulesEnabled());
            List<org.wso2.carbon.identity.api.server.idp.v1.model.Property> properties =
                    Arrays.stream(config
                            .getProvisioningProperties()).map(propertyToExternal)
                            .collect(Collectors.toList());
            outboundConnector.setProperties(properties);
        }
        return outboundConnector;
    }

    /**
     * Evaluate the list of patch operations and update the root level attributes of the identity provider accordingly.
     *
     * @param patchRequest List of patch operations.
     * @param idpToUpdate  Identity Provider to be updated.
     */
    private void processPatchRequest(List<Patch> patchRequest, IdentityProvider idpToUpdate) {

        if (CollectionUtils.isEmpty(patchRequest)) {
            return;
        }
        for (Patch patch : patchRequest) {
            String path = patch.getPath();
            Patch.OperationEnum operation = patch.getOperation();
            String value = patch.getValue();
            boolean isCertificateUpdateRequest =
                    path.matches(Constants.CERTIFICATE_PATH_REGEX) && path.split(Constants.PATH_SEPERATOR).length == 4;
            // 'ADD', 'REPLACE' and 'REMOVE' patch operations supported.
            if (operation == Patch.OperationEnum.REPLACE) {
                if (isCertificateUpdateRequest) {
                    List<String> certificates = new ArrayList<>();
                    int index = Integer.parseInt(path.split(Constants.PATH_SEPERATOR)[3]);
                    if (ArrayUtils.isNotEmpty(idpToUpdate.getCertificateInfoArray()) && (index >= 0)
                            && (index < idpToUpdate.getCertificateInfoArray().length)) {
                        for (CertificateInfo certInfo : idpToUpdate.getCertificateInfoArray()) {
                            certificates.add(base64Decode(certInfo.getCertValue()));
                        }
                        if (!value.startsWith(IdentityUtil.PEM_BEGIN_CERTFICATE)) {
                            try {
                                value = base64Decode(value);
                            } catch (IllegalArgumentException e) {
                                throw handleException(Response.Status.BAD_REQUEST,
                                        Constants.ErrorMessage.ERROR_CODE_INVALID_CERTIFICATE_FORMAT, null);
                            }
                        }
                        if (certificates.contains(value)) {
                            throw handleException(Response.Status.CONFLICT,
                                    Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP,
                                    "Cannot replace certificate as this certificate already exists.");
                        }
                        certificates.set(index, value);
                        idpToUpdate.setCertificate(base64Encode(StringUtils.join(certificates, "")));
                    } else if (ArrayUtils.isEmpty(idpToUpdate.getCertificateInfoArray()) ||
                            index >= idpToUpdate.getCertificateInfoArray().length) {
                        throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage
                                .ERROR_CODE_ERROR_UPDATING_IDP, "Cannot replace certificate as it does not exist.");
                    } else {
                        throw handleException(Response.Status.BAD_REQUEST, Constants.ErrorMessage
                                .ERROR_CODE_INVALID_INPUT, null);
                    }
                } else {
                    switch (path) {
                        case Constants.NAME_PATH:
                            idpToUpdate.setIdentityProviderName(value);
                            break;
                        case Constants.DESCRIPTION_PATH:
                            idpToUpdate.setIdentityProviderDescription(value);
                            break;
                        case Constants.IMAGE_PATH:
                            idpToUpdate.setImageUrl(value);
                            break;
                        case Constants.IS_PRIMARY_PATH:
                            idpToUpdate.setPrimary(Boolean.parseBoolean(value));
                            break;
                        case Constants.IS_ENABLED_PATH:
                            idpToUpdate.setEnable(Boolean.parseBoolean(value));
                            break;
                        case Constants.IS_FEDERATION_HUB_PATH:
                            idpToUpdate.setFederationHub(Boolean.parseBoolean(value));
                            break;
                        case Constants.HOME_REALM_PATH:
                            idpToUpdate.setHomeRealmId(value);
                            break;
                        case Constants.ALIAS_PATH:
                            idpToUpdate.setAlias(value);
                            break;
                        case Constants.IDP_ISSUER_NAME_PATH:
                            patchIdpProperties(idpToUpdate, Constants.IDP_ISSUER_NAME, value);
                            break;
                        case Constants.CERTIFICATE_JWKSURI_PATH:
                            patchIdpProperties(idpToUpdate, Constants.JWKS_URI, value);
                            break;
                        default:
                            throw handleException(Response.Status.BAD_REQUEST, Constants.ErrorMessage
                                    .ERROR_CODE_INVALID_INPUT, null);
                    }
                }
            } else if (operation == Patch.OperationEnum.ADD) {
                if (isCertificateUpdateRequest) {

                    List<String> certificates = new ArrayList<>();
                    int index = Integer.parseInt(path.split(Constants.PATH_SEPERATOR)[3]);
                    if (index != idpToUpdate.getCertificateInfoArray().length) {
                        throw handleException(Response.Status.BAD_REQUEST,
                                Constants.ErrorMessage.ERROR_CODE_INVALID_INPUT, "Invalid index in 'path' attribute");
                    }
                    if (ArrayUtils.isNotEmpty(idpToUpdate.getCertificateInfoArray())) {
                        for (CertificateInfo certInfo : idpToUpdate.getCertificateInfoArray()) {
                            certificates.add(base64Decode(certInfo.getCertValue()));
                        }
                    }
                    if (!value.startsWith(IdentityUtil.PEM_BEGIN_CERTFICATE)) {
                        try {
                            value = base64Decode(value);
                        } catch (IllegalArgumentException e) {
                            throw handleException(Response.Status.BAD_REQUEST,
                                    Constants.ErrorMessage.ERROR_CODE_INVALID_CERTIFICATE_FORMAT, null);
                        }
                    }
                    if (certificates.contains(value)) {
                        throw handleException(Response.Status.CONFLICT,
                                Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP,
                                "Cannot add certificate as it already exists.");
                    }
                    certificates.add(index, value);
                    idpToUpdate.setCertificate(base64Encode(StringUtils.join(certificates, "")));

                    // Need to remove the JWKS URI property, if it exists, when adding certificates as they are
                    // alternate options of the property Certificate Type.
                    IdentityProviderProperty[] propertyDTOS = idpToUpdate.getIdpProperties();
                    List<IdentityProviderProperty> idpNewProperties = new ArrayList<>();
                    for (IdentityProviderProperty propertyDTO : propertyDTOS) {
                        // Add properties to new list omitting the JWKS URI property.
                        if (!Constants.JWKS_URI.equals(propertyDTO.getName())) {
                            idpNewProperties.add(propertyDTO);
                        }
                    }
                    idpToUpdate.setIdpProperties(idpNewProperties.toArray(new IdentityProviderProperty[0]));
                } else if (Constants.CERTIFICATE_JWKSURI_PATH.equals(path)) {

                    IdentityProviderProperty[] propertyDTOS = idpToUpdate.getIdpProperties();
                    for (IdentityProviderProperty propertyDTO : propertyDTOS) {
                        if (Constants.JWKS_URI.equals(propertyDTO.getName())) {
                            throw handleException(Response.Status.BAD_REQUEST,
                                    Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP,
                                    "Cannot add JWKS URI as it already exists");
                        }
                    }

                    List<IdentityProviderProperty> idpProperties = new ArrayList<>(Arrays.asList(propertyDTOS));
                    IdentityProviderProperty jwksProperty = new IdentityProviderProperty();
                    jwksProperty.setName(Constants.JWKS_URI);
                    jwksProperty.setValue(value);
                    idpProperties.add(jwksProperty);
                    idpToUpdate.setIdpProperties(idpProperties.toArray(new IdentityProviderProperty[0]));
                    // Need to remove certificates, if any, when adding JWKS URI as they are alternate options of the
                    // property Certificate Type.
                    if (ArrayUtils.isNotEmpty(idpToUpdate.getCertificateInfoArray())) {
                        idpToUpdate.setCertificate(null);
                    }
                } else if (Constants.IDP_ISSUER_NAME_PATH.equals(path)) {
                    IdentityProviderProperty[] propertyDTOS = idpToUpdate.getIdpProperties();
                    for (IdentityProviderProperty propertyDTO : propertyDTOS) {
                        if (Constants.IDP_ISSUER_NAME.equals(propertyDTO.getName())) {
                            throw handleException(Response.Status.BAD_REQUEST,
                                    Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP,
                                    "Cannot add Issuer Name as it already exists");
                        }
                    }
                    List<IdentityProviderProperty> idpProperties = new ArrayList<>(Arrays.asList(propertyDTOS));
                    IdentityProviderProperty issuerNameProperty = new IdentityProviderProperty();
                    issuerNameProperty.setName(Constants.IDP_ISSUER_NAME);
                    issuerNameProperty.setValue(value);
                    idpProperties.add(issuerNameProperty);
                    idpToUpdate.setIdpProperties(idpProperties.toArray(new IdentityProviderProperty[0]));
                } else {
                    throw handleException(Response.Status.BAD_REQUEST,
                            Constants.ErrorMessage.ERROR_CODE_INVALID_INPUT, null);
                }
            } else if (operation == Patch.OperationEnum.REMOVE) {
                if (isCertificateUpdateRequest) {

                    List<String> certificates = new ArrayList<>();
                    int index = Integer.parseInt(path.split(Constants.PATH_SEPERATOR)[3]);
                    if (ArrayUtils.isNotEmpty(idpToUpdate.getCertificateInfoArray()) && (index >= 0) &&
                            index < idpToUpdate.getCertificateInfoArray().length) {
                        for (CertificateInfo certInfo : idpToUpdate.getCertificateInfoArray()) {
                            certificates.add(base64Decode(certInfo.getCertValue()));
                        }
                        certificates.remove(index);
                    } else if (ArrayUtils.isEmpty(idpToUpdate.getCertificateInfoArray()) ||
                            index >= idpToUpdate.getCertificateInfoArray().length) {
                        throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage
                                .ERROR_CODE_ERROR_UPDATING_IDP, "Cannot replace certificate as it does not exist.");
                    } else {
                        throw handleException(Response.Status.BAD_REQUEST,
                                Constants.ErrorMessage.ERROR_CODE_INVALID_INPUT, "Invalid index in 'path' attribute");
                    }
                    idpToUpdate.setCertificate(base64Encode(StringUtils.join(certificates, "")));
                } else if (Constants.CERTIFICATE_JWKSURI_PATH.equals(path)) {

                    IdentityProviderProperty[] propertyDTOS = idpToUpdate.getIdpProperties();
                    List<IdentityProviderProperty> idpNewProperties = new ArrayList<>();
                    for (IdentityProviderProperty propertyDTO : propertyDTOS) {
                        // Add properties to new list omitting the JWKS URI property.
                        if (!Constants.JWKS_URI.equals(propertyDTO.getName())) {
                            idpNewProperties.add(propertyDTO);
                        }
                    }

                    // If the sizes of original and new property lists are equal, then the JWKS URI property has not
                    // been available.
                    if (propertyDTOS.length == idpNewProperties.size()) {
                        throw handleException(Response.Status.NOT_FOUND,
                                Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP,
                                "Cannot remove JWKS URI as it does not exist.");
                    }

                    idpToUpdate.setIdpProperties(idpNewProperties.toArray(new IdentityProviderProperty[0]));
                } else {
                    throw handleException(Response.Status.BAD_REQUEST,
                            Constants.ErrorMessage.ERROR_CODE_INVALID_INPUT, null);
                }
            } else {
                // Throw an error if any other patch operations are sent in the request.
                throw handleException(Response.Status.BAD_REQUEST, Constants.ErrorMessage
                        .ERROR_CODE_INVALID_INPUT, null);
            }
        }
    }

    private void patchIdpProperties(IdentityProvider identityProvider, String propertyName, String propertyValue) {

        IdentityProviderProperty[] propertyDTOS = identityProvider.getIdpProperties();
        for (IdentityProviderProperty propertyDTO : propertyDTOS) {
            if (propertyName.equals(propertyDTO.getName())) {
                propertyDTO.setValue(propertyValue);
                return;
            }
        }
        throw handleException(Response.Status.NOT_FOUND, Constants.ErrorMessage.ERROR_CODE_ERROR_UPDATING_IDP,
                String.format("Cannot replace %s as it does not exist.", propertyName));
    }

    /**
     * Base64-decode content.
     *
     * @param encodedContent Encoded message content.
     * @return Decoded value.
     */
    private String base64Decode(String encodedContent) {

        return new String(Base64.getDecoder().decode(encodedContent), (StandardCharsets.UTF_8));
    }

    /**
     * Base64-encode content.
     *
     * @param content Message content to be encoded.
     * @return Encoded value.
     */
    private String base64Encode(String content) {

        return new String(Base64.getEncoder().encode(content.getBytes(StandardCharsets.UTF_8)),
                (StandardCharsets.UTF_8));
    }

    /**
     * Handle IdentityProviderManagementException, extract error code, error description and status code to be sent
     * in the response.
     *
     * @param e         IdentityProviderManagementException
     * @param errorEnum Error message Information.
     * @return APIError.
     */
    private APIError handleIdPException(IdentityProviderManagementException e,
                                        Constants.ErrorMessage errorEnum, String data) {

        ErrorResponse errorResponse;
        Response.Status status;

        if (e instanceof IdentityProviderManagementClientException) {
            if (ERROR_CODE_RESOURCE_LIMIT_REACHED.equals(e.getErrorCode())) {
                return handleResourceLimitReached();
            }
            if (e.getErrorCode() != null) {
                String errorCode = e.getErrorCode();
                errorResponse = getErrorBuilder(errorCode, e.getMessage(), data).build(log, e.getMessage());
                errorCode =
                        errorCode.contains(org.wso2.carbon.identity.api.server.common.Constants.ERROR_CODE_DELIMITER) ?
                                errorCode : Constants.IDP_MANAGEMENT_PREFIX + errorCode;
                errorResponse.setCode(errorCode);
            } else {
                errorResponse = getErrorBuilder(errorEnum, data).build(log, e.getMessage());
            }
            errorResponse.setDescription(e.getMessage());
            IdentityProviderManagementClientException clientException = (IdentityProviderManagementClientException) e;
            if (StringUtils.isNotEmpty(clientException.getDescription())) {
                errorResponse.setDescription(clientException.getDescription());
            }
            status = Response.Status.BAD_REQUEST;
        } else if (e instanceof IdentityProviderManagementServerException) {
            if (e.getErrorCode() != null) {
                String errorCode = e.getErrorCode();
                errorResponse = getErrorBuilder(errorCode, e.getMessage(), data).build(log, e,
                        includeData(e.getMessage(), data));
                errorCode =
                        errorCode.contains(org.wso2.carbon.identity.api.server.common.Constants.ERROR_CODE_DELIMITER) ?
                                errorCode : Constants.IDP_MANAGEMENT_PREFIX + errorCode;
                errorResponse.setCode(errorCode);
             } else {
                errorResponse = getErrorBuilder(errorEnum, data).build(log, e, includeData(e.getMessage(), data));
            }
            errorResponse.setDescription(e.getMessage());
            status = Response.Status.INTERNAL_SERVER_ERROR;
        } else {
            if (e.getErrorCode() != null) {
                errorResponse = getErrorBuilder(e.getErrorCode(), e.getMessage(), data).build(log,
                        e, includeData(e.getMessage(), data));
            } else {
                errorResponse = getErrorBuilder(errorEnum, data).build(log, e, includeData(e.getMessage(), data));
            }
            status = Response.Status.INTERNAL_SERVER_ERROR;
        }
        return new APIError(status, errorResponse);
    }

    private APIError handleResourceLimitReached() {

        ErrorResponse errorResponse = getErrorBuilder(ERROR_CODE_IDP_LIMIT_REACHED, null)
                .build(log, ERROR_CODE_IDP_LIMIT_REACHED.getDescription());
        Response.Status status = Response.Status.FORBIDDEN;
        return new APIError(status, errorResponse);
    }

    /**
     * Handle exceptions generated in API.
     *
     * @param status HTTP Status.
     * @param error  Error Message information.
     * @return APIError.
     */
    private APIError handleException(Response.Status status, Constants.ErrorMessage error, String data) {

        return new APIError(status, getErrorBuilder(error, data).build());
    }

    /**
     * Return error builder.
     *
     * @param errorMsg Error Message information.
     * @return ErrorResponse.Builder.
     */
    private ErrorResponse.Builder getErrorBuilder(Constants.ErrorMessage errorMsg, String data) {

        return new ErrorResponse.Builder().withCode(errorMsg.getCode()).withMessage(errorMsg.getMessage())
                .withDescription(includeData(errorMsg, data));
    }

    private ErrorResponse.Builder getErrorBuilder(String errorCode, String errorMsg, String data) {

        return new ErrorResponse.Builder().withCode(errorCode).withMessage(errorMsg)
                .withDescription(includeData(errorMsg, data));
    }

    /**
     * Include context data to error message.
     *
     * @param error Constant.ErrorMessage.
     * @param data  Context data.
     * @return Formatted error message.
     */
    private static String includeData(Constants.ErrorMessage error, String data) {

        String message;
        if (StringUtils.isNotBlank(data)) {
            message = String.format(error.getDescription(), data);
        } else {
            message = String.format(error.getDescription(), "");
        }
        return message;
    }

    private static String includeData(String errorMsg, String data) {

        String message = errorMsg;
        if (data != null) {
            message = String.format(errorMsg, data);
        }
        return message;
    }

    /**
     * Validate the claim configs of an IDP.
     *
     * @param tenantDomain Tenant domain.
     * @param claims       Claim configs.
     * @throws IdentityProviderManagementException If an error while validating the claim configs or if an invalid
     *                                             config is found.
     */
    private void validateClaims(String tenantDomain, Claims claims) throws IdentityProviderManagementException {

        if (claims == null) {
            return;
        }
        String userClaimURI = claims.getUserIdClaim() == null ? null : claims.getUserIdClaim().getUri();
        String roleClaimURI = claims.getRoleClaim() == null ? null : claims.getRoleClaim().getUri();
        List<org.wso2.carbon.identity.api.server.idp.v1.model.ClaimMapping> claimMappings = claims.getMappings();

        // EMPTY claimMappings indicate that the IDP is using local claim dialect.
        if (CollectionUtils.isEmpty(claimMappings)) {
            List<LocalClaim> localClaimsList = getLocalClaimURIs(tenantDomain);
            Set<String> claimURIs = localClaimsList.stream().map(LocalClaim::getClaimURI).collect(Collectors.toSet());
            // Validate userClaimURI and roleClaimURI.
            if (StringUtils.isNotBlank(userClaimURI) && !claimURIs.contains(userClaimURI)) {
                throw new IdentityProviderManagementClientException(
                        Constants.ErrorMessage.ERROR_CODE_NOT_EXISTING_USER_CLAIM_URI.getCode(),
                        String.format(Constants.ErrorMessage.ERROR_CODE_NOT_EXISTING_USER_CLAIM_URI.getDescription(),
                                tenantDomain));
            }
            if (StringUtils.isNotBlank(roleClaimURI) && !claimURIs.contains(roleClaimURI)) {
                throw new IdentityProviderManagementClientException(
                        Constants.ErrorMessage.ERROR_CODE_NOT_EXISTING_ROLE_CLAIM_URI.getCode(),
                        String.format(Constants.ErrorMessage.ERROR_CODE_NOT_EXISTING_ROLE_CLAIM_URI.getDescription(),
                                tenantDomain));
            }
            return;
        }
        validateUserAndRoleClaims(userClaimURI, roleClaimURI, claimMappings);

        // Validate LocalClaim objects against local claim URIs.
        List<LocalClaim> localClaimsList = getLocalClaimURIs(tenantDomain);
        Set<String> claimURIs = localClaimsList.stream().map(LocalClaim::getClaimURI).collect(Collectors.toSet());
        for (org.wso2.carbon.identity.api.server.idp.v1.model.ClaimMapping claimMapping : claimMappings) {

            // If a claim URI does not exist in claimURIs list, then that's a not existing URI.
            if (!claimURIs.contains(claimMapping.getLocalClaim().getUri())) {
                throw new IdentityProviderManagementClientException(
                        Constants.ErrorMessage.ERROR_CODE_NOT_EXISTING_CLAIM_URI.getCode(),
                        Constants.ErrorMessage.ERROR_CODE_NOT_EXISTING_CLAIM_URI.getDescription());
            }
        }
    }

    /**
     * Validate whether the userClaimURI and the roleClaimURI align with the claim mappings.
     *
     * @param userClaimURI  User claim URI.
     * @param roleClaimURI  Role claim URI.
     * @param claimMappings List of claim mapping for the IDP.
     * @throws IdentityProviderManagementClientException If the serClaimURI and the roleClaimURI does not match with
     *                                                   the claim mappings.
     */
    private void validateUserAndRoleClaims(String userClaimURI, String roleClaimURI,
                               List<org.wso2.carbon.identity.api.server.idp.v1.model.ClaimMapping> claimMappings)
            throws IdentityProviderManagementClientException {

        boolean isUserClaimURISpecified = StringUtils.isNotBlank(userClaimURI);
        boolean isRoleClaimURISpecified = StringUtils.isNotBlank(roleClaimURI);
        boolean isValidUserClaimURI = false;
        boolean isValidRoleClaimURI = false;

        for (org.wso2.carbon.identity.api.server.idp.v1.model.ClaimMapping claimMapping : claimMappings) {
            // If both claims are valid at the same time, no need to iterate.
            if (isValidRoleClaimURI && isValidUserClaimURI) {
                return;
            }
            if (isUserClaimURISpecified && userClaimURI.equals(claimMapping.getIdpClaim())) {
                isValidUserClaimURI = true;
            }
            if (isRoleClaimURISpecified && roleClaimURI.equals(claimMapping.getIdpClaim())) {
                isValidRoleClaimURI = true;
            }
        }
        if (isUserClaimURISpecified && !isValidUserClaimURI) {
            throw new IdentityProviderManagementClientException(
                    Constants.ErrorMessage.ERROR_CODE_INVALID_USER_CLAIM_URI.getCode(),
                    String.format(Constants.ErrorMessage.ERROR_CODE_INVALID_USER_CLAIM_URI.getDescription(),
                            userClaimURI));
        }
        if (isRoleClaimURISpecified && !isValidRoleClaimURI) {
            throw new IdentityProviderManagementClientException(
                    Constants.ErrorMessage.ERROR_CODE_INVALID_ROLE_CLAIM_URI.getCode(),
                    String.format(Constants.ErrorMessage.ERROR_CODE_INVALID_ROLE_CLAIM_URI.getMessage(), roleClaimURI));
        }
    }

    /**
     * Get the local claim URIs of the tenant.
     *
     * @param tenantDomain Tenant domain.
     * @return List of local claim URIs.
     * @throws IdentityProviderManagementServerException If an error occurred while getting the claims list.
     */
    private List<LocalClaim> getLocalClaimURIs(String tenantDomain) throws IdentityProviderManagementServerException {

        try {
            List<LocalClaim> localClaimsList = claimMetadataManagementService.getLocalClaims(tenantDomain);
            if (localClaimsList.isEmpty()) {
                if (log.isDebugEnabled()) {
                    log.debug("No local claims found for tenant:" + tenantDomain + ".Therefore, skipping " +
                            "local claim URI validation.");
                }
                return Collections.emptyList();
            }
            return localClaimsList;
        } catch (ClaimMetadataException e) {
            if (log.isDebugEnabled()) {
                log.debug("Error occurred while validating the local claim URIs for tenant: " + tenantDomain, e);
            }
            throw new IdentityProviderManagementServerException(
                    Constants.ErrorMessage.ERROR_CODE_VALIDATING_LOCAL_CLAIM_URIS.getCode(),
                    Constants.ErrorMessage.ERROR_CODE_VALIDATING_LOCAL_CLAIM_URIS.getDescription());
        }
    }

    /**
     * Check whether the keys of all the properties are distinct
     * @param properties
     * @return
     */
    boolean areAllDistinct(List<org.wso2.carbon.identity.api.server.idp.v1.model.Property> properties) {
        return properties.stream()
                .map(org.wso2.carbon.identity.api.server.idp.v1.model.Property::getKey)
                .distinct().count() == properties.size();
    }

    private void removeSecretsFromIDP(IdentityProvider identityProvider) {

        FederatedAuthenticatorConfig defaultAuthenticatorConfigs = identityProvider.getDefaultAuthenticatorConfig();
        if (defaultAuthenticatorConfigs != null) {
            removeSecretsFromProperties(defaultAuthenticatorConfigs.getProperties());
        }

        for (FederatedAuthenticatorConfig federatedAuthenticatorConfig : identityProvider
                .getFederatedAuthenticatorConfigs()) {
            removeSecretsFromProperties(federatedAuthenticatorConfig.getProperties());
        }

        ProvisioningConnectorConfig defaultProvisioningConnectorConfig = identityProvider
                .getDefaultProvisioningConnectorConfig();
        if (defaultProvisioningConnectorConfig != null) {
            removeSecretsFromProperties(defaultProvisioningConnectorConfig.getProvisioningProperties());
        }

        for (ProvisioningConnectorConfig provisioningConnectorConfig : identityProvider
                .getProvisioningConnectorConfigs()) {
            removeSecretsFromProperties(provisioningConnectorConfig.getProvisioningProperties());
        }

        // Mask the secret values of the IDP properties identified by the prefix '__secret__'.
        for (IdentityProviderProperty idpProperty : identityProvider.getIdpProperties()) {
            if (idpProperty.getName().startsWith("__secret__")) {
                idpProperty.setValue(MASKING_VALUE);
            }
        }
    }

    private void removeSecretsFromProperties(Property[] properties) {

        Arrays.asList(properties).forEach(property -> {
            if (property.isConfidential()) {
                property.setValue(MASKING_VALUE);
            }
        });
    }

    private FileContent generateFileFromModel(String fileType, IdentityProvider identityProvider)
            throws IdentityProviderManagementException {

        if (log.isDebugEnabled()) {
            log.debug("Parsing IdP object to file content of type: " + fileType);
        }
        String mediaType = Util.getMediaType(fileType);
        switch (mediaType) {
            case MEDIA_TYPE_XML:
                return parseIdpToXml(identityProvider);
            case MEDIA_TYPE_JSON:
                return parseIdpToJson(identityProvider);
            case MEDIA_TYPE_YAML:
                return parseIdpToYaml(identityProvider);
            default:
                log.warn(String.format("Unsupported file type: %s requested for export. Defaulting to YAML parsing.",
                        fileType));
                return parseIdpToYaml(identityProvider);
        }
    }

    private FileContent parseIdpToXml(IdentityProvider identityProvider)
            throws IdentityProviderManagementException {

        StringBuilder fileNameSB = new StringBuilder(identityProvider.getIdentityProviderName());
        fileNameSB.append(XML_FILE_EXTENSION);

        JAXBContext jaxbContext;
        try {
            jaxbContext = JAXBContext.newInstance(IdentityProvider.class);
            Marshaller marshaller = jaxbContext.createMarshaller();
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
            StringWriter stringWriter = new StringWriter();
            marshaller.marshal(identityProvider, stringWriter);
            return new FileContent(fileNameSB.toString(), MEDIA_TYPE_XML, stringWriter.toString());
        } catch (JAXBException e) {
            throw new IdentityProviderManagementException(
                    "Error when parsing identity provider to XML file.", e);
        }
    }

    private FileContent parseIdpToJson(IdentityProvider identityProvider)
            throws IdentityProviderManagementException {

        StringBuilder fileNameSB = new StringBuilder(identityProvider.getIdentityProviderName());
        fileNameSB.append(JSON_FILE_EXTENSION);
        ObjectMapper objectMapper = new ObjectMapper(new JsonFactory());
        try {
            return new FileContent(fileNameSB.toString(), MEDIA_TYPE_JSON,
                    objectMapper.writeValueAsString(identityProvider));
        } catch (JsonProcessingException e) {
            throw new IdentityProviderManagementClientException(
                    "Error when parsing identity provider to JSON file.", e);
        }
    }

    private FileContent parseIdpToYaml(IdentityProvider identityProvider)
            throws IdentityProviderManagementException {

        StringBuilder fileNameSB = new StringBuilder(identityProvider.getIdentityProviderName());
        fileNameSB.append(YAML_FILE_EXTENSION);

        Representer representer = new Representer(new DumperOptions());
        TypeDescription typeDescription = new TypeDescription(IdentityProvider.class);
        typeDescription.setExcludes("id", "resourceId");
        representer.addTypeDescription(typeDescription);
        representer.getPropertyUtils().setSkipMissingProperties(true);

        Yaml yaml = new Yaml(representer);
        try {
            return new FileContent(fileNameSB.toString(), MEDIA_TYPE_YAML, yaml.dump(identityProvider));
        } catch (YAMLException e) {
            throw new IdentityProviderManagementException(
                    "Error when parsing identity provider to YAML file.", e);
        }
    }

    private IdentityProvider getIDPFromFile(InputStream fileInputStream, Attachment fileDetail)
            throws IdentityProviderManagementClientException {

        try {
            FileContent idpFileContent = new FileContent(fileDetail.getDataHandler().getName(),
                    fileDetail.getDataHandler().getContentType(),
                    IOUtils.toString(fileInputStream, StandardCharsets.UTF_8.name()));

            return generateModelFromFile(idpFileContent);
        } catch (IOException | IdentityProviderManagementClientException e) {
            throw new IdentityProviderManagementClientException("Provided input file is not in the correct format", e);
        } finally {
            IOUtils.closeQuietly(fileInputStream);
        }
    }

    private IdentityProvider generateModelFromFile(FileContent fileContent)
            throws IdentityProviderManagementClientException {

        if (log.isDebugEnabled()) {
            log.debug(String.format("Parsing identity provider from file: %s of type: %s.", fileContent.getFileName(),
                    fileContent.getFileType()));
        }
        if (StringUtils.isEmpty(fileContent.getContent())) {
            throw new IdentityProviderManagementClientException(String.format(
                    "Empty Identity Provider configuration file %s uploaded.", fileContent.getFileName()));
        }

        switch (Util.getMediaType(fileContent.getFileType())) {
            case MEDIA_TYPE_XML:
                return parseIdpFromXml(fileContent);
            case MEDIA_TYPE_JSON:
                return parseIdpFromJson(fileContent);
            case MEDIA_TYPE_YAML:
                return parseIdpFromYaml(fileContent);
            default:
                log.warn(String.format("Unsupported media type %s for file %s. Defaulting to YAML parsing.",
                        fileContent.getFileType(), fileContent.getFileName()));
                return parseIdpFromYaml(fileContent);
        }
    }

    private IdentityProvider parseIdpFromXml(FileContent fileContent)
            throws IdentityProviderManagementClientException {

        try {
            JAXBContext jaxbContext = JAXBContext.newInstance(IdentityProvider.class);
            Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
            return (IdentityProvider) unmarshaller.unmarshal(new StringReader(fileContent.getContent()));
        } catch (JAXBException e) {
            throw new IdentityProviderManagementClientException(String.format("Error in reading " +
                    "XML file configuration for Identity Provider: %s.", fileContent.getFileName()), e);
        }
    }

    private IdentityProvider parseIdpFromYaml(FileContent fileContent)
            throws IdentityProviderManagementClientException {

        try {
            // Add trusted tags included in the IDP YAML files.
            List<String> trustedTagList = new ArrayList<>();
            trustedTagList.add(IdentityProvider.class.getName());

            LoaderOptions loaderOptions = new LoaderOptions();
            TagInspector tagInspector = new TrustedPrefixesTagInspector(trustedTagList);
            loaderOptions.setTagInspector(tagInspector);
            Yaml yaml = new Yaml(new Constructor(IdentityProvider.class, loaderOptions));
            return yaml.loadAs(fileContent.getContent(), IdentityProvider.class);
        } catch (YAMLException e) {
            throw new IdentityProviderManagementClientException(String.format("Error in reading YAML file " +
                    "configuration for Identity Provider: %s.", fileContent.getFileName()), e);
        }
    }

    private IdentityProvider parseIdpFromJson(FileContent fileContent)
            throws IdentityProviderManagementClientException {

        try {
            return new ObjectMapper().readValue(fileContent.getContent(), IdentityProvider.class);
        } catch (JsonProcessingException e) {
            throw new IdentityProviderManagementClientException(String.format("Error in reading JSON " +
                    "file configuration for Identity Provider: %s.", fileContent.getFileName()), e);
        }
    }

    private void validateSystemReservedIDP(String idpName) throws IdentityProviderManagementClientException {

        if (FrameworkConstants.ORGANIZATION_LOGIN_IDP_NAME.equals(idpName)) {
            throw new IdentityProviderManagementClientException(String.format("The Connection with name %s is " +
                    "a system reserved name.", idpName));
        }
    }

    private String getDecodedAuthenticatorName(String authId) throws IdentityProviderManagementClientException {

        try {
            return base64URLDecode(authId);
        } catch (IllegalArgumentException e) {
            Constants.ErrorMessage error = Constants.ErrorMessage.ERROR_CODE_NON_DECODABLE_AUTH_ID;
            throw new IdentityProviderManagementClientException(error.getCode(),
                    String.format(error.getDescription(), authId));
        }
    }

    private enum IdpOperation {
        CREATION,
        UPDATE
    }
}
