/*
 * Copyright (c) 2026, 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.moesif.publisher.v1.core;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
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.moesif.publisher.v1.model.MoesifPublisher;
import org.wso2.carbon.identity.api.server.moesif.publisher.v1.model.MoesifPublisherReq;
import org.wso2.carbon.identity.moesif.configuration.MoesifConfigurationManagementService;
import org.wso2.carbon.identity.moesif.configuration.exception.MoesifConfigurationManagementClientException;
import org.wso2.carbon.identity.moesif.configuration.exception.MoesifConfigurationManagementException;
import org.wso2.carbon.identity.moesif.configuration.model.MoesifPublisherDTO;

import java.util.Collections;
import java.util.Map;

import javax.ws.rs.core.Response;

/**
 * API-layer service that bridges REST API to the OSGi MoesifConfigurationManagementService.
 */
public class MoesifPublisherManagementService {

    private static final Log log = LogFactory.getLog(MoesifPublisherManagementService.class);
    private final MoesifConfigurationManagementService moesifConfigurationManagementService;

    public MoesifPublisherManagementService(
            MoesifConfigurationManagementService moesifConfigurationManagementService) {

        this.moesifConfigurationManagementService = moesifConfigurationManagementService;
    }

    public MoesifPublisher addMoesifPublisher(MoesifPublisherReq moesifPublisherReq) {

        try {
            MoesifPublisherDTO result = moesifConfigurationManagementService.addMoesifPublisher(
                    moesifPublisherReq.getApiKeyValue(), moesifPublisherReq.getEventPublisherEnablement());
            return buildResponse(result);
        } catch (MoesifConfigurationManagementException e) {
            throw handleException(e);
        }
    }

    public MoesifPublisher getMoesifPublisher() {

        try {
            MoesifPublisherDTO result = moesifConfigurationManagementService.getMoesifPublisher();
            return buildResponse(result);
        } catch (MoesifConfigurationManagementException e) {
            throw handleException(e);
        }
    }

    public MoesifPublisher updateMoesifPublisher(String apiKeyValue, Map<String, Boolean> eventPublisherEnablement) {

        try {
            MoesifPublisherDTO result = moesifConfigurationManagementService
                    .updateMoesifPublisher(apiKeyValue,
                            eventPublisherEnablement != null ? eventPublisherEnablement : Collections.emptyMap());
            return buildResponse(result);
        } catch (MoesifConfigurationManagementException e) {
            throw handleException(e);
        }
    }

    public void deleteMoesifPublisher() {

        try {
            moesifConfigurationManagementService.deleteMoesifPublisher();
        } catch (MoesifConfigurationManagementException e) {
            throw handleException(e);
        }
    }

    private MoesifPublisher buildResponse(MoesifPublisherDTO dto) {

        MoesifPublisher publisher = new MoesifPublisher();
        publisher.setName(dto.getName());
        if (dto.getPublisherTypes() != null) {
            publisher.setEventPublisherEnablement(dto.getPublisherTypes());
        }
        return publisher;
    }

    private APIError handleException(MoesifConfigurationManagementException e) {

        if (e instanceof MoesifConfigurationManagementClientException) {
            return buildClientError(e);
        }
        return buildServerError(e);
    }

    private APIError buildClientError(MoesifConfigurationManagementException e) {

        ErrorResponse errorResponse = new ErrorResponse.Builder()
                .withCode(e.getErrorCode())
                .withMessage(e.getMessage())
                .withDescription(e.getDescription())
                .build(log, e.getMessage());

        Response.Status status = Response.Status.BAD_REQUEST;
        if (e.getErrorCode() != null) {
            if (e.getErrorCode().equals("MOESIF_60002")) {
                status = Response.Status.CONFLICT;
            } else if (e.getErrorCode().equals("MOESIF_60004")) {
                status = Response.Status.NOT_FOUND;
            }
        }
        return new APIError(status, errorResponse);
    }

    private APIError buildServerError(MoesifConfigurationManagementException e) {

        ErrorResponse errorResponse = new ErrorResponse.Builder()
                .withCode(e.getErrorCode())
                .withMessage(e.getMessage())
                .withDescription(e.getDescription())
                .build(log, e, e.getMessage());

        return new APIError(Response.Status.INTERNAL_SERVER_ERROR, errorResponse);
    }
}
