/*
 * Copyright © 2017-2018 AT&T Intellectual Property.
 * Modifications Copyright © 2018 IBM.
 *
 * 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.
 *
 *
 * Unless otherwise specified, all documentation contained herein is licensed
 * under the Creative Commons License, Attribution 4.0 Intl. (the "License");
 * you may not use this documentation except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         https://creativecommons.org/licenses/by/4.0/
 *
 * Unless required by applicable law or agreed to in writing, documentation
 * 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.onap.optf.cmso.service.rs;

import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import org.onap.optf.cmso.model.dao.ApprovalTypeDao;
import org.onap.optf.cmso.optimizer.CmsoOptimizerClient;
import org.onap.optf.cmso.service.rs.models.HealthCheckComponent;
import org.onap.optf.cmso.service.rs.models.HealthCheckMessage;
import org.onap.optf.cmso.sostatus.MsoStatusClient;
import org.onap.optf.cmso.ticketmgt.TmClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Controller;

/**
 * Health check.
 *
 *
 */
@Controller
public class HealthCheckImpl implements HealthCheck {
    private static EELFLogger debug = EELFManager.getInstance().getDebugLogger();

    @Context
    UriInfo uri;

    @Context
    HttpServletRequest request;

    @Autowired
    TmClient tmClient;

    @Autowired
    CmsoOptimizerClient optimizerClient;

    @Autowired
    ApprovalTypeDao approvalTypeDao;

    @Autowired
    Environment env;

    @Autowired
    MsoStatusClient msoStatusClient;

    /**
     * Health check.
     *
     * @param apiVersion the api version
     * @param checkInterfaces the check interfaces
     * @return the response
     */
    @Override
    public Response healthCheck(String apiVersion, Boolean checkInterfaces) {
        debug.debug("Entered healthcheck");
        Response response = null;
        HealthCheckMessage hc = new HealthCheckMessage();
        hc.setHealthy(true);

        if (checkInterfaces) {
            addToHealthCheckMessage(hc, tmClient.healthCheck());
            addToHealthCheckMessage(hc, optimizerClient.healthCheck());
        }
        addToHealthCheckMessage(hc, this.healthCheckCrap());

        if (hc.getHealthy()) {
            response = Response.ok().entity(hc).build();
        }
        else {
            response = Response.status(Response.Status.BAD_REQUEST).entity(hc).build();
        }
        return response;
    }

    private void addToHealthCheckMessage(HealthCheckMessage hc, HealthCheckComponent hcc) {
        if (!hcc.getHealthy()) {
            hc.setHealthy(false);
        }

        hc.setHostname(System.getenv("HOSTNAME"));
        hc.addComponent(hcc);
    }

    /**
     * Health check.
     *
     * @return the health check component
     */
    private HealthCheckComponent healthCheckCrap() {
        HealthCheckComponent hcc = new HealthCheckComponent();
        hcc.setName("Scheduler Database");
        String url = env.getProperty("spring.datasource.url");
        hcc.setUrl(url);
        try {
            approvalTypeDao.findByDomain("HealthCheck");
            hcc.setHealthy(true);
            hcc.setStatus("OK");
        } catch (Exception e) {
            hcc.setStatus(e.getMessage());

        }
        return hcc;
    }

}