/**
 * Copyright 2017-2018 ZTE Corporation.
 * <p>
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.onap.holmes.engine;

import io.dropwizard.setup.Environment;

import java.util.EnumSet;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import javax.servlet.DispatcherType;

import lombok.extern.slf4j.Slf4j;
import org.onap.holmes.common.config.MicroServiceConfig;
import org.onap.holmes.common.dropwizard.ioc.bundle.IOCApplication;
import org.onap.holmes.common.exception.CorrelationException;
import org.onap.holmes.common.utils.MSBRegisterUtil;
import org.onap.holmes.common.utils.transactionid.TransactionIdFilter;
import org.onap.holmes.engine.dcae.DcaeConfigurationPolling;
import org.onap.holmes.engine.resources.EngineResources;
import org.onap.msb.sdk.discovery.entity.MicroServiceInfo;
import org.onap.msb.sdk.discovery.entity.Node;

@Slf4j
public class EngineDActiveApp extends IOCApplication<EngineDAppConfig> {

    public static void main(String[] args) throws Exception {
        new EngineDActiveApp().run(args);
    }

    @Override
    public void run(EngineDAppConfig configuration, Environment environment) throws Exception {
        super.run(configuration, environment);

        environment.jersey().register(new EngineResources());
        try {
            new MSBRegisterUtil().register2Msb(createMicroServiceInfo());
        } catch (CorrelationException e) {
            log.warn(e.getMessage(), e);
        }

        if (!System.getenv("TESTING").equals("1")) {
            ScheduledExecutorService service = Executors.newSingleThreadScheduledExecutor();
            service.scheduleAtFixedRate(
                    new DcaeConfigurationPolling(MicroServiceConfig.getEnv(MicroServiceConfig.HOSTNAME)), 0,
                    DcaeConfigurationPolling.POLLING_PERIOD, TimeUnit.MILLISECONDS);
        }

        environment.servlets().addFilter("logFilter", new TransactionIdFilter()).addMappingForUrlPatterns(EnumSet
                .allOf(DispatcherType.class), true, "/*");
    }

    private MicroServiceInfo createMicroServiceInfo() {
        String[] serviceAddrInfo = MicroServiceConfig.getMicroServiceIpAndPort();
        MicroServiceInfo msinfo = new MicroServiceInfo();
        msinfo.setServiceName("holmes-engine-mgmt");
        msinfo.setVersion("v1");
        msinfo.setUrl("/api/holmes-engine-mgmt/v1");
        msinfo.setProtocol("REST");
        msinfo.setVisualRange("0|1");
        msinfo.setEnable_ssl(true);
        Set<Node> nodes = new HashSet<>();
        Node node = new Node();
        node.setIp(serviceAddrInfo[0]);
        node.setPort(serviceAddrInfo[1]);
        node.setCheckType("HTTP");
        node.setCheckUrl(String.format("https://%s:%s/api/holmes-engine-mgmt/v1/healthcheck", serviceAddrInfo[0], serviceAddrInfo[1]));
        node.setCheckTimeOut("60s");
        node.setCheckInterval("60s");
        nodes.add(node);
        msinfo.setNodes(nodes);
        return msinfo;
    }
}