/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF 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.apache.juneau.examples.rest;
  
  import java.net.*;
  import java.util.*;
  
  import org.apache.juneau.microservice.jetty.*;
  import org.apache.juneau.parser.*;
  import org.apache.juneau.rest.client.*;
  import org.apache.juneau.serializer.*;
  
  /**
   * Utility class for starting up the examples microservice.
   */
  public class SamplesMicroservice {
  	static volatile JettyMicroservice microservice;
  	static URI microserviceURI;
  
  	// Reusable HTTP clients that get created and shut down with the microservice.
  	public static RestClient DEFAULT_CLIENT;
  	public static RestClient DEFAULT_CLIENT_PLAINTEXT;
  
  	/**
  	 * Starts the microservice.
  	 * @return <jk>true</jk> if the service started, <jk>false</jk> if it's already started.
  	 * If this returns <jk>false</jk> then don't call stopMicroservice()!.
  	 */
  	public synchronized static boolean startMicroservice() {
  		if (microservice != null)
  			return false;
  		try {
  			Locale.setDefault(Locale.US);
  			microservice = JettyMicroservice.create().workingDir("../juneau-examples-rest-jetty").configName("juneau-examples-rest-jetty.cfg").servlet(RootResources.class).build();
  			microserviceURI = microservice.start().getURI();
  			DEFAULT_CLIENT = client().json().build();
  			DEFAULT_CLIENT_PLAINTEXT = client().plainText().build();
  			return true;
  		} catch (Throwable e) {
  			// Probably already started.
  			e.printStackTrace();
  			System.err.println(e); // NOT DEBUG
  			return false;
  		}
  	}
  
  	/**
  	 * Returns the URI of the microservice.
  	 * @return The URI of the microservice.
  	 */
  	public static URI getURI() {
  		if (microservice == null)
  			startMicroservice();
  		return microserviceURI;
  	}
  
  	/**
  	 * Stops the microservice.
  	 */
  	public synchronized static void stopMicroservice() {
  		try {
  			microservice.stop();
  			microservice = null;
  			DEFAULT_CLIENT.closeQuietly();
  			DEFAULT_CLIENT_PLAINTEXT.closeQuietly();
  		} catch (Exception e) {
  			System.err.println(e); // NOT DEBUG
  		}
  	}
  
  	/**
  	 * Create a new HTTP client.
  	 */
  	public static RestClient.Builder client() {
  		try {
  			return RestClient.create().rootUrl(microserviceURI);
  		} catch (Exception e) {
  			throw new IllegalStateException(e);
  		}
  	}
  
  	/**
  	 * Create a new HTTP client using the specified serializer and parser.
  	 */
  	public static RestClient.Builder client(Serializer s, Parser p) {
 		return client().serializer(s).parser(p);
 	}
 
 	/**
 	 * Create a new HTTP client using the specified serializer and parser.
 	 */
 	public static RestClient.Builder client(Class<? extends Serializer> s, Class<? extends Parser> p) {
 		return client().serializer(s).parser(p);
 	}
 }