/*
*Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
*WSO2 Inc. 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.am.integration.test.utils.clients;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.wso2.am.integration.test.utils.APIManagerIntegrationTestException;
import org.wso2.am.integration.test.utils.base.APIMIntegrationConstants;
import org.wso2.am.integration.test.utils.bean.APPKeyRequestGenerator;
import org.wso2.am.integration.test.utils.bean.SubscriptionRequest;
import org.wso2.am.integration.test.utils.http.HTTPSClientUtils;
import org.wso2.carbon.automation.engine.annotations.ExecutionEnvironment;
import org.wso2.carbon.automation.extensions.servers.httpserver.SimpleHttpClient;
import org.wso2.carbon.automation.test.utils.http.client.HttpResponse;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.xml.xpath.XPathExpressionException;

/**
 * Provides set of method to invoke publisher API
 */
public class APIStoreRestClient {
    private static final Log log = LogFactory.getLog(APIStoreRestClient.class);
    private String backendURL;
    private Map<String, String> requestHeaders = new HashMap<String, String>();
    private static final long WAIT_TIME = 90 * 1000;

    public APIStoreRestClient(String backendURL) {
        this.backendURL = backendURL;
        if (requestHeaders.get("Content-Type") == null) {
            this.requestHeaders.put("Content-Type", "application/x-www-form-urlencoded");
        }
    }

    /**
     * Login to API store
     *
     * @param userName - username to login
     * @param password - password to login
     * @return - http response
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - Throws if login to store fails
     */
    public HttpResponse login(String userName, String password)
            throws APIManagerIntegrationTestException {
        HttpResponse response;
        log.info("Login to Store " + backendURL + " as the user " + userName);

        List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
        urlParameters.add(new BasicNameValuePair("action", "login"));
        urlParameters.add(new BasicNameValuePair("username", userName));
        urlParameters.add(new BasicNameValuePair("password", password));

        try {
            response = HTTPSClientUtils.doPost(
                    backendURL + "store/site/blocks/user/login/ajax/login.jag", requestHeaders, urlParameters);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to login to the store app ", e);
        }

        String session = getSession(response.getHeaders());

        if (session == null) {
            throw new APIManagerIntegrationTestException("No session cookie found with response");
        }

        setSession(session);
        return response;
    }

    /**
     * Subscribe to API
     *
     * @param subscriptionRequest - subscribe api request
     * @return - http response
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if subscription fails
     */
    public HttpResponse subscribe(SubscriptionRequest subscriptionRequest)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/subscription/subscription-add/ajax/subscription-add.jag"),
                    subscriptionRequest.generateRequestParameters(), requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Subscription to api fails. Error: " + e.getMessage(), e);
        }
    }

    /**
     * Generate token
     *
     * @param generateAppKeyRequest - generate api key request
     * @return - http response
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if application key generation fails.
     */
    public HttpResponse generateApplicationKey(APPKeyRequestGenerator generateAppKeyRequest)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            HttpResponse responseApp = getAllApplications();
            String appId = getApplicationId(responseApp.getData(), generateAppKeyRequest.getApplication());
            generateAppKeyRequest.setAppId(appId);

            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/subscription/subscription-add/ajax/subscription-add.jag"),
                    generateAppKeyRequest.generateRequestParameters(), requestHeaders);

        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Key generation fails. Error: " + e.getMessage(), e);
        }

    }

    /**
     * Get api which are published
     *
     * @return - http response of get API post request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if API information retrieval fails.
     */
    public HttpResponse getAPI() throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/api/listing/ajax/list.jag?action=getAllPublishedAPIs"),
                    "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to retrieve API information. " +
                                                         "Error: " + e.getMessage(), e);
        }

    }

    private String getSession(Map<String, String> responseHeaders) {
        return responseHeaders.get("Set-Cookie");
    }

    private String setSession(String session) {
        return requestHeaders.put("Cookie", session);
    }

    /**
     * Get the current session cookies
     *
     * @return current Cookie
     */
    public String getSession() {
        return requestHeaders.get("Cookie");
    }

    /**
     * Check whether the user is logged in
     *
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - If session cookie not found in the request header
     */
    private void checkAuthentication() throws APIManagerIntegrationTestException {
        if (requestHeaders.get("Cookie") == null) {
            throw new APIManagerIntegrationTestException("No Session Cookie found. Please login first");
        }
    }

    /**
     * Generate user access key
     *
     * @param consumeKey       - consumer  key of user
     * @param consumerSecret   - consumer secret key
     * @param messageBody      - message body
     * @param tokenEndpointURL - token endpoint url
     * @return - http response of generate access token api call
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if generating APIM access token fails
     */
    public HttpResponse generateUserAccessKey(String consumeKey, String consumerSecret,
                                              String messageBody, URL tokenEndpointURL)
            throws APIManagerIntegrationTestException {

        try {
            //checkAuthentication();
            Map<String, String> authenticationRequestHeaders = new HashMap<String, String>();
            String basicAuthHeader = consumeKey + ":" + consumerSecret;
            byte[] encodedBytes = Base64.encodeBase64(basicAuthHeader.getBytes("UTF-8"));

            authenticationRequestHeaders.put("Authorization", "Basic " + new String(encodedBytes, "UTF-8"));

            return HTTPSClientUtils.doPost(tokenEndpointURL, messageBody, authenticationRequestHeaders);

        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to generate API access token. " +
                                                         "Error: " + e.getMessage(), e);
        }
    }

    /**
     * Get all published apis
     *
     * @return - http response of get all published apis
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if getting publish APIs fails
     */
    public HttpResponse getAllPublishedAPIs() throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doGet(
                    backendURL + "store/site/blocks/api/listing/ajax/list.jag?action=getAllPublishedAPIs",
                    requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to get retrieve all published APIs. " +
                                                         "Error: " + e.getMessage(), e);
        }
    }

    /**
     * Get all the applications
     *
     * @return - http response of get get all applications
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if get all application fails.
     */
    public HttpResponse getAllApplications() throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doGet(
                    backendURL + "store/site/blocks/application/application-list/ajax/" +
                    "application-list.jag?action=getApplications",
                    requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to retrieve all applications. " +
                                                         "Error: " + e.getMessage(), e);
        }
    }

    /**
     * Get application details by given name
     *
     * @param applicationName - application name
     * @return - http response of get application request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if get application by name fails
     */
    public HttpResponse getPublishedAPIsByApplication(String applicationName)
            throws APIManagerIntegrationTestException {
        try {

            checkAuthentication();
            return HTTPSClientUtils.doGet(
                    backendURL + "store/site/blocks/subscription/subscription-list/ajax/" +
                    "subscription-list.jag?action=getSubscriptionByApplication&app=" +
                    applicationName, requestHeaders);

        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to retrieve the application -  " + applicationName
                                                         + ". Error: " + e.getMessage(), e);
        }

    }

    /**
     * Add rating into api
     *
     * @param apiName  - name of api
     * @param version  - api version
     * @param provider - provider of api
     * @param rating   - api rating
     * @return - http response of add rating request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if rating of api fails
     */
    public HttpResponse addRatingToAPI(String apiName, String version, String provider,
                                       String rating) throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doGet(
                    backendURL + "store/site/blocks/api/api-info/ajax/api-info.jag?" +
                    "action=addRating&name=" + apiName + "&version=" + version + "&provider=" +
                    provider + "&rating=" + rating, requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to rate API -  " + apiName
                                                         + ". Error: " + e.getMessage(), e);
        }
    }

    /**
     * Remove rating of given API
     *
     * @param apiName  - name of api
     * @param version  - api version
     * @param provider - provider of api
     * @return - http response of remove rating request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - Throws if remove API rating fails
     */
    public HttpResponse removeRatingFromAPI(String apiName, String version, String provider)
            throws APIManagerIntegrationTestException {
        try {

            checkAuthentication();
            return HTTPSClientUtils.doGet(
                    backendURL + "store/site/blocks/api/api-info/ajax/api-info.jag?" +
                    "action=removeRating&name=" + apiName + "&version=" + version +
                    "&provider=" + provider, requestHeaders);

        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to remove rating of API -  " + apiName
                                                         + ". Error: " + e.getMessage(), e);
        }
    }

    /**
     * Check if API rating activated
     *
     * @return - http response of rating activated request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - Throws if rating status cannot be retrieved
     */
    public HttpResponse isRatingActivated() throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doGet(
                    backendURL + "store/site/blocks/api/api-info/ajax/api-info.jag?" +
                    "action=isRatingActivated", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Rating status cannot be retrieved."
                                                         + " Error: " + e.getMessage(), e);
        }
    }

    /**
     * Method to retrieve all documents of given api
     *
     * @param apiName  - name of api
     * @param version  - api version
     * @param provider - provider of api
     * @return - http response of get all documentation of APIs
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if retrieval of API documentation fails
     */
    public HttpResponse getAllDocumentationOfAPI(String apiName, String version, String provider)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doGet(
                    backendURL + "store/site/blocks/api/listing/ajax/list.jag?" +
                    "action=getAllDocumentationOfApi&name=" + apiName +
                    "&version=" + version + "&provider=" + provider, requestHeaders);

        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to retrieve documentation for - " +
                                                         apiName + ". Error: " + e.getMessage(), e);

        }
    }

    /**
     * Method to retrieve all endpoint urls
     */
    public HttpResponse getApiEndpointUrls(String apiName,String version, String provider)
        throws APIManagerIntegrationTestException{
        try{
            checkAuthentication();
            return HTTPSClientUtils.doGet(
                    backendURL+ "store/site/blocks/api/api-info/ajax/api-info.jag?"+
                            "action=getAPIEndpointURLs&name=" + apiName+
                            "&version=" + version + "&provider=" + provider, requestHeaders);


        }catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to retrieve documentation for - " +
                    apiName + ". Error: " + e.getMessage(), e);

        }



    }




    /**
     * Get all paginated published API for a given tenant
     *
     * @param tenant - tenant name
     * @param start  - starting index
     * @param end    - closing  index
     * @return - http response of paginated published APIs
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if paginated apis cannot be retrieved.
     */
    public HttpResponse getAllPaginatedPublishedAPIs(String tenant, String start, String end)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doGet(backendURL + "store/site/blocks/api/listing/ajax/list.jag?" +
                                         "action=getAllPaginatedPublishedAPIs&tenant=" + tenant +
                                         "&start=" + start + "&end=" + end, requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to retrieve paginated published APIs for tenant - "
                                                         + tenant + ". Error: " + e.getMessage(), e);
        }
    }


    /**
     * Gell all paginated published apis for a given tenant
     *
     * @param tenant - tenant name
     * @param start  - starting index
     * @param end - ending index
     *
     */
    public HttpResponse getAllPaginatedPublishedAPIs(String tenant, int start, int end)
        throws APIManagerIntegrationTestException{
        try {
            checkAuthentication();

            return HTTPSClientUtils.doGet(backendURL + "store/site/blocks/api/listing/ajax/list.jag?" +
                    "action=getAllPaginatedPublishedAPIs&tenant=" + tenant +
                    "&start=" + start + "&end=" + end, requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to retrieve paginated published " +
                    "APIs for tenant - " + tenant + ". Error: " + e.getMessage(), e);
        }
    }


    /**
     * Get all published APIs for tenant
     *
     * @param tenant - tenant name
     * @return - http response of published API
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if published API retrieval fails.
     */
    public HttpResponse getAllPublishedAPIs(String tenant)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/api/listing/ajax/list.jag?action=getAllPublishedAPIs&tenant=" +
                            tenant), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to retrieve published APIs for tenant - " + tenant
                                                         + ". Error: " + e.getMessage(), e);

        }
    }

    /**
     * Add application
     *
     * @param application - application  name
     * @param tier        - throttling tier
     * @param callbackUrl - callback url
     * @param description - description of app
     * @return - http response of add application
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - if fails to add application
     */
    public HttpResponse addApplication(String application, String tier, String callbackUrl,
                                       String description)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL +
                            "store/site/blocks/application/application-add" +
                            "/ajax/application-add.jag?action=addApplication&tier=" +
                            tier + "&callbackUrl=" + callbackUrl + "&description=" + description +
                            "&application=" + application), "", requestHeaders);

        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to add application - " + application
                                                         + ". Error: " + e.getMessage(), e);

        }
    }

    /**
     * Get application
     *
     * @return - http response of get applications
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if applications cannot be retrieved.
     */
    public HttpResponse getApplications() throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/application/application-list/ajax/" +
                            "application-list.jag?action=getApplications"), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to get applications. Error: " + e.getMessage(), e);

        }
    }

    /**
     * Delete application
     *
     * @param application - application name
     * @return - http response of remove application request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if remove application fails
     */
    public HttpResponse removeApplication(String application)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/application/application-remove/ajax/application-remove.jag?" +
                            "action=removeApplication&application=" + application), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to remove application - " + application
                                                         + ". Error: " + e.getMessage(), e);

        }
    }

    /**
     * Update given application
     *
     * @param applicationOld - application name old
     * @param applicationNew - new  application name
     * @param callbackUrlNew - call back url
     * @param descriptionNew - updated description
     * @param tier           - access tier
     * @return - http response of update application
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if update application fails
     */
    public HttpResponse updateApplication(String applicationOld, String applicationNew,
                                          String callbackUrlNew, String descriptionNew, String tier)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/application/application-update/ajax/application-update.jag?" +
                            "action=updateApplication&applicationOld=" + applicationOld + "&applicationNew=" +
                            applicationNew + "&callbackUrlNew=" + callbackUrlNew + "&descriptionNew=" +
                            descriptionNew + "&tier=" + tier), "", requestHeaders);

        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to update application - " + applicationOld
                                                         + ". Error: " + e.getMessage(), e);

        }

    }

    /**
     * Update given Auth application
     *
     * @param application       auth application name
     * @param keyType           type of the key
     * @param authorizedDomains authorized domains
     * @param retryAfterFailure retry after fail
     * @param jsonParams        json parameters for grant type
     * @param callbackUrl       call back url
     * @return Http response of the update request
     * @throws APIManagerIntegrationTestException APIManagerIntegrationTestException - throws if update application fail
     */
    public HttpResponse updateClientApplication(String application, String keyType, String authorizedDomains,
            String retryAfterFailure, String jsonParams, String callbackUrl) throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(new URL(backendURL
                                                   + "/store/site/blocks/subscription/subscription-add/ajax/subscription-add.jag?" +
                                                   "action=updateClientApplication&application=" + application + "&keytype=" +
                                                   keyType + "&authorizedDomains=" + authorizedDomains + "&retryAfterFailure=" +
                                                   retryAfterFailure + "&jsonParams=" + URLEncoder.encode(jsonParams, "UTF-8")
                                                    + "&callbackUrl=" + callbackUrl), "",
                                           requestHeaders);

        } catch (Exception e) {
            throw new APIManagerIntegrationTestException(
                    "Unable to update application - " + application + ". Error: " + e.getMessage(), e);

        }
    }

    /**
     * Regenerate consumer secret.
     *
     * @param clientId Consumer Key of an application for which consumer secret need to be regenerate.
     * @return Regenerated consumer secret.
     * @throws APIManagerIntegrationTestException Throws if regeneration of consumer secret fail.
     */
    public HttpResponse regenerateConsumerSecret(String clientId) throws APIManagerIntegrationTestException {

        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(new URL(backendURL
                    + "/store/site/blocks/subscription/subscription-add/ajax/subscription-add.jag?" +
                    "action=regenerateConsumerSecret&clientId=" + clientId), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to regenerate consumer secrete. "
                    + " Error: " + e.getMessage(), e);
        }
    }
    /**
     * Get all subscriptions
     *
     * @return - http response of get all subscription request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if get all subscriptions fails
     */
    public HttpResponse getAllSubscriptions() throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/subscription/subscription-list/ajax/subscription-list.jag?" +
                            "action=getAllSubscriptions"), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to get all subscriptions."
                                                         + " Error: " + e.getMessage(), e);

        }
    }

    /**
     * Get all subscriptions of Application. This is a method to get the subscription of a given application. As
     * there is no application name is given, then only the subscriptions of first applications are returned.
     *
     * @return - http response of get all subscription request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if get all subscriptions fails
     */
    public HttpResponse getAllSubscriptionsOfApplication() throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/subscription/subscription-list/ajax/subscription-list.jag?" +
                            "action=getAllSubscriptionsOfApplication"), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to get all subscriptions. " +
                                                         "Error: " + e.getMessage(), e);

        }
    }

    /**
     * Get all subscriptions of Application. This is a method to get the subscription of a given application. If no
     * application name is given, then only the subscriptions of first applications are returned.
     *
     * @return - http response of get all subscription request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if get all subscriptions fails
     */
    public HttpResponse getAllSubscriptionsOfApplication(String selectedApplication)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/subscription/subscription-list/ajax/subscription-list.jag?" +
                            "action=getAllSubscriptionsOfApplication&selectedApp=" + selectedApplication), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to get all subscriptions"
                                                         + ". Error: " + e.getMessage(), e);

        }
    }

    /**
     * Get subscribed Apis by application name
     * @param applicationName - Application Name
     */
    public HttpResponse getSubscribedAPIs(String applicationName) throws
            APIManagerIntegrationTestException {
        try {
            checkAuthentication();


            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/subscription/subscription-list/" +
                            "ajax/subscription-list.jag?action=getAllSubscriptions&selectedApp="
                            + applicationName), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to get all subscribed APIs"
                                                         + ". Error: " + e.getMessage(), e);

        }
    }



    /**
     * Get subscribed APIs for the specific Application
     *
     * @param applicationName - Name of the Application of API in store
     * @return - HttpResponse - Response with subscribed APIs
     * @throws APIManagerIntegrationTestException
     */

    public HttpResponse getSubscribedAPIs(String applicationName,String domain) throws
            APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/subscription/subscription-list/" +
                            "ajax/subscription-list.jag?action=getAllSubscriptions&selectedApp="
                            + applicationName + "&tenant="+domain), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to get all subscribed APIs"
                                                         + ". Error: " + e.getMessage(), e);

        }
    }



    /**
     * Unsubscribe from API
     *
     * @param API           - name of api
     * @param version       - api version
     * @param provider      - provider name
     * @param applicationId - application id
     * @return - http response of unsubscription request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - Throws if unsubscription fails
     */
    public HttpResponse removeAPISubscription(String API, String version, String provider,
                                              String applicationId)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/subscription/subscription-remove/ajax/subscription-remove.jag?" +
                            "action=removeSubscription&name=" + API + "&version=" + version + "&provider=" + provider +
                            "&applicationId=" + applicationId), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to get all subscriptions"
                                                         + ". Error: " + e.getMessage(), e);

        }
    }

    /**
     * Unsubscribe from API by application name
     *
     * @param API             - name of api
     * @param version         - api version
     * @param provider        - provider name
     * @param applicationName - application Name
     * @return - http response of unsubscription request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - Throws if unsubscription fails
     */
    public HttpResponse removeAPISubscriptionByApplicationName(String API, String version,
                                                               String provider,
                                                               String applicationName)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/subscription/subscription-remove/ajax/subscription-remove.jag?" +
                            "action=removeSubscription&name=" + API + "&version=" + version + "&provider=" + provider +
                            "&applicationName=" + applicationName), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to get all subscriptions"
                                                         + ". Error: " + e.getMessage(), e);

        }
    }

    /**
     * Unsubscribe from API
     *
     * @param API           - name of api
     * @param version       - api version
     * @param provider      - provider name
     * @param appName - application name
     * @return - http response of unsubscription request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - Throws if unsubscription fails
     */

    public HttpResponse removeAPISubscriptionByName(String API, String version,String provider,
                                              String appName) throws APIManagerIntegrationTestException{
        try{
            checkAuthentication();
            HttpResponse responseApp = getAllApplications();
            String appId = getApplicationId(responseApp.getData(), appName);

            return removeAPISubscription(API,version,provider,appId);


        } catch(Exception e){
            throw new APIManagerIntegrationTestException("Unable to remove subscriptions API:" + API +
                    " Version: " + version + "Provider: " + provider + "App Name: "+ appName +
                    ". Error: " + e.getMessage(), e);

        }

    }

    /**
     * Get all API tags
     *
     * @return - http response of get all api tags
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if get all tags fails
     */
    public HttpResponse getAllTags() throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();

            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/tag/tag-cloud/ajax/list.jag?action=getAllTags"),
                    "", requestHeaders);

        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to get all tags. Error: " + e.getMessage(), e);
        }

    }


    /**
     * Add comment to given API
     *
     * @param apiName  - name of the api
     * @param version  - api version
     * @param provider - provider name
     * @param comment  - comment to  add
     * @return - http response of add comment
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if add comment fails
     */
    public HttpResponse addComment(String apiName, String version, String provider, String comment)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/comment/comment-add/ajax/comment-add.jag?" +
                            "action=addComment&name=" + apiName + "&version=" + version + "&provider=" +
                            provider + "&comment=" + comment), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable add a comment in to API - " + apiName
                    + ". Error: " + e.getMessage(), e);
        }
    }

    /**
     * Check whether commenting is enabled
     *
     * @return - http response of comment status
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - Throws if retrieving comment activation status fails.
     */
    public HttpResponse isCommentActivated() throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doGet(
                    backendURL + "store/site/blocks/comment/comment-add/ajax/comment-add.jag?" +
                    "action=isCommentActivated", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Failed to get comment activation status"
                                                         + ". Error: " + e.getMessage(), e);
        }
    }

    /**
     * Get recently added APIs by tenant
     *
     * @param tenant - tenant name
     * @param limit  - limit of result set
     * @return - http response of recently added API request
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - throws if
     */
    public HttpResponse getRecentlyAddedAPIs(String tenant, String limit)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(
                    new URL(backendURL + "store/site/blocks/api/" +
                            "recently-added/ajax/list.jag?action=getRecentlyAddedAPIs&tenant=" +
                            tenant + "&limit=" + limit), "", requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Failed to get recently added APIs from tenant - " +
                                                         tenant + ". Error: " + e.getMessage(), e);
        }
    }

    private String getApplicationId(String jsonStringOfApplications, String applicationName)
            throws APIManagerIntegrationTestException {
        String applicationId = null;
        JSONObject obj;
        try {
            obj = new JSONObject(jsonStringOfApplications);
            JSONArray arr = obj.getJSONArray("applications");
            for (int i = 0; i < arr.length(); i++) {
                String appName = arr.getJSONObject(i).getString("name");
                if (applicationName.equals(appName)) {
                    applicationId = arr.getJSONObject(i).getString("id");
                }
            }
        } catch (JSONException e) {
            throw new APIManagerIntegrationTestException("getting application Id failed"
                                                         + ". Error: " + e.getMessage(), e);
        }
        return applicationId;
    }

    /**
     * Get the  web page with filtered API when  click the API Tag link
     *
     * @param apiTag - API tag the need ti filter the api.
     * @return HttpResponse - Response  that contains the web page with filtered API when  click the API Tag link
     * @throws APIManagerIntegrationTestException - Exception throws when check the Authentication and
     *                                            HTTPSClientUtils.sendGetRequest() method call
     */
    public HttpResponse getAPIPageFilteredWithTags(String apiTag)
            throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doGet(backendURL + "/store/apis/list?tag=" + apiTag + "&tenant=carbon.super",
                                          requestHeaders);
        } catch (IOException ex) {
            throw new APIManagerIntegrationTestException("Exception when get APO page filtered by tag"
                                                         + ". Error: " + ex.getMessage(), ex);
        }
    }

    /**
     * Subscribe and API. This method return the response of the subscription server REST call.
     *
     * @param subscriptionRequest -SubscriptionRequest request instance  with API subscription information.
     * @return HttpResponse - Response f the subscription server REST call
     * @throws APIManagerIntegrationTestException - Exception throws when check the Authentication and
     *                                            HTTPSClientUtils.doPost() method call.
     */
    public HttpResponse subscribeToAPI(SubscriptionRequest subscriptionRequest)
            throws APIManagerIntegrationTestException {
        //This method  do the same functionality as subscribe(), except this method  always returns the response object
        //regardless of the response code. But subscribe() returns the response object only if  the response code is
        // 200 or else it will return an Exception.
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(new URL(backendURL +
                                                  "/store/site/blocks/subscription/subscription-add/ajax/subscription-add.jag")
                    , subscriptionRequest.generateRequestParameters(), requestHeaders);
        } catch (Exception ex) {
            throw new APIManagerIntegrationTestException("Exception when Subscribing to a API"
                                                         + ". Error: " + ex.getMessage(), ex);
        }
    }


//    /**
//     * Retrieve the API store page as anonymous user.
//     *
//     * @param storeTenantDomain - Tenant domain of store that need to  get the page.
//     * @return HttpResponse - Response with API store page of the provided domain.
//     * @throws APIManagerIntegrationTestException - IOException throws from HttpRequestUtil.doGet() method call
//     */
//
//    public HttpResponse getAPIStorePageAsAnonymousUser(String storeTenantDomain) throws APIManagerIntegrationTestException {
//        try {
//            return HttpRequestUtil.doGet(
//                    backendURL + "store/?tenant=" + storeTenantDomain, requestHeaders);
//        } catch (Exception ioE) {
//            throw new APIManagerIntegrationTestException(
//                    "Exception when retrieve the API store page as anonymous user", ioE);
//        }
//    }

    public HttpResponse getAPIListFromStoreAsAnonymousUser(String tenantDomain)
            throws APIManagerIntegrationTestException {
        try {
            HttpResponse httpResponse = HTTPSClientUtils.doGet(backendURL + "store/site/blocks/api/recently-added/ajax/list.jag"
                    + "?action=getRecentlyAddedAPIs&tenant=" + tenantDomain, new HashMap<String, String>());

            if (new JSONObject(httpResponse.getData()).getBoolean("error")) {
                throw new APIManagerIntegrationTestException("Error when getting API list as AsAnonymousUser");
            }

            return httpResponse;
        } catch (IOException ioE) {
            throw new APIManagerIntegrationTestException(
                    "Exception when retrieve the API list as anonymous user. Error: " + ioE.getMessage(), ioE);
        } catch (JSONException e) {
            throw new APIManagerIntegrationTestException("Response message is not JSON Response"
                                                         + ". Error: " + e.getMessage(), e);
        }
    }



 /**
     * API Store logout
     *
     */
    public HttpResponse logout() throws APIManagerIntegrationTestException{
        try{
            checkAuthentication();
            return HTTPSClientUtils.doPost(new URL(backendURL + "store/site/blocks/user/login/ajax/login.jag"),
                    "action=logout", requestHeaders);
        }catch (Exception e) {
            throw new APIManagerIntegrationTestException("Error in store app logout. Error: " + e.getMessage(), e);
        }
    }

 /**
     * API Store sign up
     * @param userName - store user name
     * @param password -store password
     * @param firstName - user first name
     * @param lastName - user's last name
     * @param email - user's email
     * @return
     * @throws APIManagerIntegrationTestException
     *
     */
    public HttpResponse signUp(String userName, String password, String firstName, String lastName, String email) throws
            APIManagerIntegrationTestException {
        try {
            return HTTPSClientUtils.doPost(new URL(backendURL + "store/site/blocks/user/sign-up/ajax/user-add.jag"),
                    "action=addUser&username=" + userName + "&password=" + password + "&allFieldsValues=" + firstName +
                            "|" + lastName + "|" + email, requestHeaders);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Error in user sign up. Error: " + e.getMessage(), e);
        }
    }

    /**
     * Get Prototyped APIs in Store
     *
     * @return HttpResponse - Response with APIs which are deployed as a Prototyped APIs
     * @throws APIManagerIntegrationTestException
     */
    public HttpResponse getPrototypedAPI(String tenant) throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();

            return HTTPSClientUtils.doGet(backendURL + "store/site/pages/list-prototyped-apis.jag?"
                    + "tenant=" +tenant , requestHeaders);

        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to get prototype APIs. Error: " + e.getMessage(), e);
        }

    }

//    /**
//     * @param API      - Name of the API
//     * @param version  - version of the API
//     * @param provider - provider of the API
//     * @param appName  - Application name of the API in store
//     * @return -Http Response of Remove Subscription list
//     * @throws APIManagerIntegrationTestException
//     */
//    public HttpResponse removeAPISubscriptionByName(String API, String version, String provider,
//                                                    String appName)
//            throws APIManagerIntegrationTestException {
//        try {
//            checkAuthentication();
//            HttpResponse responseApp = getAllApplications();
//            String appId = getApplicationId(responseApp.getData(), appName);
//
//            return removeAPISubscription(API, version, provider, appId);
//
//
//        } catch (Exception e) {
//            throw new APIManagerIntegrationTestException("Unable to remove subscriptions API:" + API +
//                    " Version: " + version + "Provider: " + provider + "App Name: " + appName, e);
//
//        }
//
//    }

//    /**
//     * Get subscribed APIs for the specific Application
//     *
//     * @param applicationName - Name of the Application of API in store
//     * @return - HttpResponse - Response with subscribed APIs
//     * @throws APIManagerIntegrationTestException
//     */
//
//    public HttpResponse getSubscribedAPIs(String applicationName) throws
//            APIManagerIntegrationTestException {
//        try {
//            checkAuthentication();
//            return HTTPSClientUtils.doPost(
//                    new URL(backendURL + "store/site/blocks/subscription/subscription-list/" +
//                            "ajax/subscription-list.jag?action=getAllSubscriptions&selectedApp="
//                            + applicationName + "&tenant=carbon.super"), "", requestHeaders);
//        } catch (Exception e) {
//            throw new APIManagerIntegrationTestException("Unable to get all subscribed APIs", e);
//
//        }
//    }


    public HttpResponse searchPaginateAPIs(String tenant, String start, String end,
                                           String searchTerm)
            throws Exception {
        checkAuthentication();
        HttpResponse response = HTTPSClientUtils.doPost(new URL(
                backendURL + "/store/site/blocks/search/api-search/ajax/search.jag?")
                , "action=searchAPIs&tenant=" + tenant + "&start=" + start + "&end=" + end + "&query=" + searchTerm
                , requestHeaders);
        if (response.getResponseCode() == 200) {
            return response;
        } else {
            throw new Exception("Get API Information failed> " + response.getData());
        }
    }

    /**
     * Wait for swagger document until its updated.
     *
     * @param userName         - Name of the api provider
     * @param apiName          - API Name
     * @param apiVersion       - API Version
     * @param expectedResponse - Expected response of the API
     * @param executionMode    - Mode of the test execution (Standalone or Platform)
     * @throws IOException                              - Throws if Swagger document cannot be found
     * @throws javax.xml.xpath.XPathExpressionException - Throws if Swagger document cannot be found
     */
    public void waitForSwaggerDocument(String userName, String apiName, String apiVersion,
                                       String expectedResponse, String executionMode)
            throws IOException, XPathExpressionException {

        long currentTime = System.currentTimeMillis();
        long waitTime = currentTime + WAIT_TIME;
        HttpResponse response = null;

        if (executionMode.equalsIgnoreCase(String.valueOf(ExecutionEnvironment.PLATFORM))) {

            while (waitTime > System.currentTimeMillis()) {

                log.info("WAIT for swagger document of API :" + apiName + " with version: " + apiVersion
                         + " user :" + userName + " with expected response : " + expectedResponse);

                try {
                    response = getSwaggerDocument(userName, apiName, apiVersion, executionMode);
                } catch (APIManagerIntegrationTestException ignored) {

                }
                if (response != null) {
                    if (response.getData().contains(expectedResponse)) {
                        log.info("API :" + apiName + " with version: " + apiVersion +
                                 " with expected response " + expectedResponse + " found");
                        break;
                    }
                } else {
                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException ignored) {

                    }

                }
            }
        }
    }

    /**
     * This method will return swagger document of given api name and version
     *
     * @param userName      - User who request the swagger document
     * @param apiName       - Name of the API
     * @param apiVersion    - Version of the API
     * @param executionMode - Mode of the test execution (Standalone or Platform)
     * @return - HTTP Response of the GET swagger document request
     * @throws APIManagerIntegrationTestException - Throws if swagger document GET request fails
     */
    public HttpResponse getSwaggerDocument(String userName, String apiName, String apiVersion,
                                           String executionMode)
            throws APIManagerIntegrationTestException {
        HttpResponse response = null;

        if (executionMode.equalsIgnoreCase(String.valueOf(ExecutionEnvironment.PLATFORM))) {
            try {
                checkAuthentication();
                response = HTTPSClientUtils.doGet(backendURL + "store/api-docs/" + userName + "/" +
                                                          apiName + "/" + apiVersion, null);
            } catch (IOException ex) {
                throw new APIManagerIntegrationTestException("Exception when get APO page filtered by tag"
                                                             + ". Error: " + ex.getMessage(), ex);
            }

        }
        return response;
    }

    /**
     * Get application page
     *
     * @return - http response of get application
     * @throws org.wso2.am.integration.test.utils.APIManagerIntegrationTestException - if fails to get application page
     */
    public HttpResponse getApplicationPage() throws APIManagerIntegrationTestException {
        try {
            checkAuthentication();
            return HTTPSClientUtils.doPost(new URL(backendURL + APIMIntegrationConstants.STORE_APPLICATION_REST_URL), "",
                    requestHeaders);
        } catch (APIManagerIntegrationTestException e) {
            throw new APIManagerIntegrationTestException("No Session Cookie found. Please login first. "
                                                         + "Error: " + e.getMessage(), e);
        } catch (MalformedURLException e) {
            throw new APIManagerIntegrationTestException("Unable to get application page, URL is not valid. "
                                                         + "Error: " + e.getMessage(), e);
        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to get application page. Error: " + e.getMessage(), e);
        }
    }

    /**
     * Generate SDK for a given programming language
     *
     * @param sdkLanguage programming language for the SDK
     * @param apiName name of the API
     * @param apiVersion version of the API
     * @param apiProvider provider of the API
     * @return org.apache.http.HttpResponse for the SDK generation
     * @throws APIManagerIntegrationTestException if failed to generate the SDK
     */
    public org.apache.http.HttpResponse generateSDKUpdated(String sdkLanguage, String apiName, String apiVersion,
                                                           String apiProvider) throws APIManagerIntegrationTestException {

        try {
            checkAuthentication();
            SimpleHttpClient httpClient = new SimpleHttpClient();
            String restURL = backendURL + "store/site/blocks/sdk/ajax/sdk-create.jag?" +
                    "action=generateSDK&apiName=" + apiName + "&apiVersion=" + apiVersion + "&apiProvider=" +
                    apiProvider + "&language=java";
            //response is org.apache.http.HttpResponse, because we need to write it to a file
            return httpClient.doGet(restURL, requestHeaders);
        } catch (IOException e) {
            throw new APIManagerIntegrationTestException("Error in generating SDK for API : " + apiName +
                    " API version : " + apiVersion + " Error : " + e.getMessage(), e);
        }

    }

    /**
     * Change password of the user
     *
     * @param username username of the user
     * @param currentPassword current password of the user
     * @param newPassword new password of the user
     * @return
     * @throws APIManagerIntegrationTestException if failed to change password
     */
    public HttpResponse changePassword(String username, String currentPassword, String newPassword)
            throws APIManagerIntegrationTestException {
        try {
            return HTTPSClientUtils.doPost(new URL(
                    backendURL + "store/site/blocks/user/user-info/ajax/user-info.jag?action=changePassword" +
                            "&username=" + username + "&currentPassword=" +
                            currentPassword + "&newPassword=" + newPassword), "", requestHeaders);

        } catch (Exception e) {
            throw new APIManagerIntegrationTestException("Unable to change password. Error: " + e.getMessage(), e);
        }
    }
}
