/*-
 * ============LICENSE_START=======================================================
 * ONAP-PAP-REST
 * ================================================================================
 * Copyright (C) 2017-2019 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed 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.
 * ============LICENSE_END=========================================================
 */

package org.onap.policy.pap.xacml.rest.handler;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.onap.policy.common.logging.OnapLoggingContext;
import org.onap.policy.pap.xacml.rest.service.ImportService;
import org.onap.policy.pap.xacml.rest.service.MetricService;
import org.onap.policy.xacml.api.pap.OnapPDPGroup;

public class APIRequestHandler {

    private OnapPDPGroup newGroup;

    /**
     * Do get.
     *
     * @param request the request
     * @param response the response
     * @param apiflag the apiflag
     * @throws IOException Signals that an I/O exception has occurred.
     */
    public void doGet(HttpServletRequest request, HttpServletResponse response, String apiflag) throws IOException {
        // Request from the API to get Dictionary Items
        if ("api".equalsIgnoreCase(apiflag)) {
            DictionaryHandler dictionaryHandler = DictionaryHandler.getInstance();
            dictionaryHandler.doDictionaryAPIGet(request, response);
            return;
        }
        // Request from the API to get the ActiveVersion from the PolicyVersion table
        if ("version".equalsIgnoreCase(apiflag)) {
            PushPolicyHandler pushHandler = new PushPolicyHandler();
            pushHandler.getActiveVersion(request, response);
            return;
        }
        // Request from the API to get the URI from the gitpath
        if ("uri".equalsIgnoreCase(apiflag)) {
            PushPolicyHandler pushHandler = new PushPolicyHandler();
            pushHandler.getSelectedURI(request, response);
            return;
        }
        if ("getMetrics".equalsIgnoreCase(apiflag)) {
            MetricService.doGetPolicyMetrics(response);
        }
    }

    /**
     * Do put.
     *
     * @param request the request
     * @param response the response
     * @param service the service
     * @throws IOException Signals that an I/O exception has occurred.
     */
    public void doPut(HttpServletRequest request, HttpServletResponse response, String service) throws IOException {
        if ("MICROSERVICE".equalsIgnoreCase(service) || "BRMSPARAM".equalsIgnoreCase(service)
                || "OPTIMIZATION".equalsIgnoreCase(service)) {
            ImportService importService = new ImportService();
            importService.doImportMicroServicePut(request, response);
            return;
        }
        if ("dictionaryItem".equalsIgnoreCase(service)) {
            DictionaryHandler dictionaryHandler = DictionaryHandler.getInstance();
            dictionaryHandler.doDictionaryAPIPut(request, response);
        } else {
            SavePolicyHandler savePolicy = SavePolicyHandler.getInstance();
            savePolicy.doPolicyAPIPut(request, response);
        }
    }

    /**
     * Do delete.
     *
     * @param request the request
     * @param response the response
     * @param loggingContext the logging context
     * @param apiflag the apiflag
     * @throws IOException Signals that an I/O exception has occurred.
     */
    public void doDelete(HttpServletRequest request, HttpServletResponse response, OnapLoggingContext loggingContext,
            String apiflag) throws IOException {
        DeleteHandler deleteHandler = DeleteHandler.getInstance();
        if ("deletePapApi".equalsIgnoreCase(apiflag)) {
            deleteHandler.doApiDeleteFromPap(request, response);
        } else if ("deletePdpApi".equalsIgnoreCase(apiflag)) {
            deleteHandler.doApiDeleteFromPdp(request, response, loggingContext);
            setNewGroup(deleteHandler.getDeletedGroup());
        }
    }

    private void setNewGroup(OnapPDPGroup newGroup) {
        this.newGroup = newGroup;
    }

    public OnapPDPGroup getNewGroup() {
        return newGroup;
    }
}