/*
 * Copyright 2016-2017, Nokia Corporation
 *
 * 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.vfc.nfvo.driver.vnfm.svnfm.msb.impl;

import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.http.client.ClientProtocolException;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.common.bo.AdaptorEnv;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.common.util.CommonUtil;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.constant.CommonConstants;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.http.client.HttpClientProcessorInf;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.http.client.HttpResult;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.msb.bo.MsbServiceInfo;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.msb.inf.IMsbMgmr;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestMethod;

import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

@Component
public class MsbMgmrImpl implements IMsbMgmr {
	private static final Logger logger = LoggerFactory.getLogger(MsbMgmrImpl.class);

	@Autowired
	AdaptorEnv adaptorEnv;

	@Autowired
	HttpClientProcessorInf httpClientProcessor;

	private Gson gson = new Gson();

	@Override
	public void register() {

		try {
			String url = adaptorEnv.getMsbApiUriFront() + CommonConstants.MSB_REGISTER_SERVICE_PATH;
			HashMap<String, String> map = new HashMap<>();
			map.put(CommonConstants.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE);

			String bodyPostStr = readVfcAdaptorInfoFromJsonFile();
			
			logger.info("MSB register content is: " + bodyPostStr);

			HttpResult httpResult = httpClientProcessor.process(url, RequestMethod.POST, map, bodyPostStr);
			String responseStr = httpResult.getContent();

			logger.info("MsbMgmrImpl -> register, responseStr is " + responseStr);
			
			if(httpResult.getStatusCode() == 201)
			{
				logger.info("MsbMgmrImpl -> register, Successfully ");
			}
			else
			{
				logger.error("MsbMgmrImpl -> register Error, statusCode = " + httpResult.getStatusCode());
			}

		} catch (IOException e) {
			logger.error("IOException Failed to register nokia vnfm driver! ", e);
		}

	}

	private String readVfcAdaptorInfoFromJsonFile() throws IOException {
		String filePath = "/etc/adapterInfo/vnfmadapterinfo.json";
		String fileContent = CommonUtil.getJsonStrFromFile(filePath);	
		return fileContent;
	}

	@Override
	public void unregister() {
//		try {
//			String url = adaptorEnv.getMsbApiUriFront() + String.format(CommonConstants.MSB_UNREGISTER_SERVICE_PATH);
//
//			HttpResult httpResult = httpClientProcessor.process(url, RequestMethod.DELETE, null, null);
//			String responseStr = httpResult.getContent();
//
//			logger.info("MsbMgmrImpl -> unregister, responseStr is " + responseStr);
//			if(httpResult.getStatusCode() == 204)
//			{
//				logger.info("MsbMgmrImpl -> register, Successfully ");
//			}
//			else
//			{
//				logger.error("MsbMgmrImpl -> register Error, statusCode = " + httpResult.getStatusCode());
//			}
//
//		} catch (Exception e) {
//			logger.error("IOException Failed to unregister nokia vnfm driver! ", e);
//		}

	}

	public String getServiceUrlInMsbBySeriveNameAndVersion(String serviceName, String version) throws IOException {
		try{
			String url = adaptorEnv.getMsbApiUriFront() + String.format(CommonConstants.MSB_QUERY_SERVICE_PATH, serviceName, version);

			HttpResult httpResult = httpClientProcessor.process(url, RequestMethod.GET, null, null);

			String responseStr = httpResult.getContent();
			logger.info("MsbMgmrImpl -> getServiceUrlInMsbBySeriveNameAndVersion, responseStr is " + responseStr);
			String serviceUrl = "";
			if(httpResult.getStatusCode() == 200)
			{
				MsbServiceInfo serviceInfo = gson.fromJson(responseStr, MsbServiceInfo.class);
				if (null == serviceInfo) {
					logger.error("There is no service in MSB for serviceName = {} and version = {}", serviceName, version);
				}
				else{
					serviceUrl = serviceInfo.getUrl();
					logger.info("Service Url in MSB for serviceName = {} and version = {} is {}", serviceName, version, serviceUrl);
				}
			}
			else
			{
				logger.error("MsbMgmrImpl -> getServiceUrlInMsbBySeriveNameAndVersion Error, statusCode = " + httpResult.getStatusCode());
			}

			return serviceUrl;

		}catch(Exception e){
			logger.error("MsbMgmrImpl -> getServiceUrlInMsbBySeriveNameAndVersion Error", e);
			throw new IOException("getServiceUrlInMsbBySeriveNameAndVersion", e);

		}		
		
	}

	public void setAdaptorEnv(AdaptorEnv env) {
		this.adaptorEnv = env;
	}

}