/*******************************************************************************
 * Copyright 2016-2017 ZTE, Inc. and others.
 * 
 * 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.
 ******************************************************************************/
package org.onap.msb.apiroute.wrapper.consulextend;

import org.apache.http.HttpHost;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.common.annotations.VisibleForTesting;

public class Consul {
	/**
	 * Default Consul HTTP API host.
	 */
	public static final String DEFAULT_HTTP_HOST = "localhost";

	/**
	 * Default Consul HTTP API port.
	 */
	public static final int DEFAULT_HTTP_PORT = 8500;

	private static final Logger LOGGER = LoggerFactory
			.getLogger(Consul.class);
	
	private final CatalogClient catalogClient;
	private final HealthClient healthClient;

	private Consul(CatalogClient catalogClient, HealthClient healthClient) {
		this.catalogClient = catalogClient;
		this.healthClient = healthClient;
	}

	/**
	 * Get the Catalog HTTP client.
	 * <p>
	 * /v1/catalog
	 * 
	 * @return The Catalog HTTP client.
	 */
	public CatalogClient catalogClient() {
		return catalogClient;
	}

	/**
	 * Get the Health HTTP client.
	 * <p>
	 * /v1/health
	 * 
	 * @return The Health HTTP client.
	 */
	public HealthClient healthClient() {
		return healthClient;
	}
	
	/**
	 * Creates a new {@link Builder} object.
	 * 
	 * @return A new Consul builder.
	 */
	public static Builder builder() {
		return new Builder();
	}

	/**
	 * Used to create a default Consul client.
	 * 
	 * @return A default {@link Consul} client.
	 */
	@VisibleForTesting
	public static Consul newClient() {
		return builder().build();
	}

	public static class Builder {

		private HttpHost targetHost;

		{
			targetHost = new HttpHost(DEFAULT_HTTP_HOST, DEFAULT_HTTP_PORT);
		}

		Builder() {

		}

		public Builder withHostAndPort(String hostname, int port) {
			this.targetHost = new HttpHost(hostname, port);
			return this;
		}

		public Consul build() {
			LOGGER.info("********build consul:"+targetHost.toString()+"****************");
			CatalogClient catalogClient = new CatalogClient(targetHost);
			HealthClient healthClient = new HealthClient(targetHost);
			return new Consul(catalogClient,healthClient);
		}

	}
}