/**
 * Copyright 2016 ZTE 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.aai.esr.resource;

import com.codahale.metrics.annotation.Timed;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;

import org.eclipse.jetty.http.HttpStatus;
import org.onap.aai.esr.entity.db.BaseData;
import org.onap.aai.esr.entity.rest.BaseRestData;
import org.onap.aai.esr.exception.ExtsysException;
import org.onap.aai.esr.handle.CommonHandler;
import org.onap.aai.esr.util.ExtsysDbUtil;
import org.onap.aai.esr.util.RestResponseUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.ArrayList;
import java.util.List;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

@Path("/common")
@Api(tags = {" common Management "})
public class CommonManager {

  CommonHandler handler = new CommonHandler();
  private static final Logger LOGGER = LoggerFactory.getLogger(CommonManager.class);

  /**
   * query all  exr instance. 
   */
  @Path("")
  @GET
  @ApiOperation(value = "get  all instance ")
  @Produces(MediaType.APPLICATION_JSON)
  @ApiResponses(value = {
      @ApiResponse(code = HttpStatus.NOT_FOUND_404, message = "microservice not found",
          response = String.class),
      @ApiResponse(code = HttpStatus.UNSUPPORTED_MEDIA_TYPE_415,
          message = "Unprocessable MicroServiceInfo Entity ", response = String.class),
      @ApiResponse(code = HttpStatus.INTERNAL_SERVER_ERROR_500, message = "internal server error",
          response = String.class)})
  @Timed
  public Response queryInstanceList() {
    LOGGER.info("start query all instance!");
    List<BaseData> list;
    try {
      list = handler.getAll();
    } catch (ExtsysException error) {
      LOGGER.error("query all instance failed.errorMsg:" + error.getErrorMsg());
      return RestResponseUtil.getErrorResponse(error);
    }
    if (list == null || list.size() <= 0) {
      LOGGER.info("query all instance end.no match condition record");
      return RestResponseUtil.getSuccessResponse(new ArrayList<BaseRestData>());
    } else {
      LOGGER.info("query all instance end.size:" + list.size());
      ArrayList<BaseRestData> restList = new ArrayList<BaseRestData>();
      for (int i = 0; i < list.size(); i++) {
        restList.add(new BaseRestData(list.get(i)));
      }
      return RestResponseUtil.getSuccessResponse(restList);
    }

  }
  
  /**
   * query  exr instance by id. 
   */
  @Path("/{instanceId}")
  @GET
  @ApiOperation(value = "get instance by id")
  @Produces(MediaType.APPLICATION_JSON)
  @ApiResponses(value = {
      @ApiResponse(code = HttpStatus.NOT_FOUND_404, message = "microservice not found",
          response = String.class),
      @ApiResponse(code = HttpStatus.UNSUPPORTED_MEDIA_TYPE_415,
          message = "Unprocessable MicroServiceInfo Entity ", response = String.class),
      @ApiResponse(code = HttpStatus.INTERNAL_SERVER_ERROR_500, message = "internal server error",
          response = String.class)})
  @Timed
  public Response queryInstanceById(
      @ApiParam(value = "instanceId") @PathParam("instanceId") String instanceId) {
    LOGGER.info("start query  instance by id." + instanceId);
    List<BaseData> list;
    try {
      list = handler.getInstanceById(instanceId);
    } catch (ExtsysException error) {
      LOGGER.error("query  instance failed.errorMsg:" + error.getErrorMsg());
      return RestResponseUtil.getErrorResponse(error);
    }
    if (list == null || list.size() <= 0) {
      LOGGER.info("query  instance end.no match condition record");
      return RestResponseUtil.getSuccessResponse(null);
    } else {
      LOGGER.info("query  ems end.info:" + ExtsysDbUtil.objectToString(list));
      return RestResponseUtil.getSuccessResponse(new BaseRestData(list.get(0)));
    }
  }


}