/**
 * Description: atmosphere服务类
 * Author: tiansiyuan
 * Date: 2020/5/16 13:49:15
 */

import store from '@/store';
import { updateStatusbyRoomIdAndUserId } from '@/api/plotting/plotting';

const atmosphere = window.atmosphere || {};

const RoomService = {
	/**
	 *  创建标绘对象
	 *  url：标绘room的地址
	 */
	create(url) {

		const service = {
			showPrompt: true,
			parent: null,
			message: {
				onOpen: "连接标绘房间成功",
				onClientTimeout: "消息发送失败",
				onError: "标绘服务器内部错误，请刷新页面重新接入",
				onReconnect: "掉线重连....请稍候",
				onTransportFailure: "客户端不支持websocket，请更换浏览器",
			},
			onMessage(msg) {},
			onReopen() {}
		};

		let connectedEndPoint = null;

		service.join = function(userType, id, roomId) {
      debugger;
      // 如果url为空，说明还没有创建协同标绘房间。
      // 如果connectedEndPoint不为空，说明当前已经连接到一个协同标绘房间，重新连接需要先退出当前房间。
      if (url !== '' && connectedEndPoint == null) {
        let request = {
          url: url,
          transport: 'websocket',
          fallbackTransport: 'websocket', // 只支持websocket方式
          logLevel: 'debug',
          maxReconnectOnClose: 3, // 重连三次
          reconnectInterval: 15000, // 每次重连的时间间隔为2秒
          reconnectOnServerError: true,
          // 成功建立连接回调函数
          onOpen(response) {
            console.log('成功链接', response);
            if (service.showPrompt) {
              console.log('标绘房间连接成功！');
            }
            switch (userType) {
              case 'platform':
                if (id !== store.getters.hostOrgId) {
                  service.send({
                    id: id,
                    status: 1,
                    userType: userType,
                    roomId: roomId,
                    type: 'status',
                  });
                }
                break;
              case 'app':
                service.send({
                  id: id,
                  status: 1,
                  userType: userType,
                  roomId: roomId,
                  type: 'status',
                });
                updateStatusbyRoomIdAndUserId(roomId, id, 1);
                break;
              default:
            }
          },
          onReopen(request, response) {
            location.reload();
          },
          // 收到atmosphere消息的回调函数
          onMessage(response) {
            if (response.state === 'messageReceived' && response.status === 200) {
              if (service.onMessage != null && typeof (service.onMessage) == 'function') {
                service.onMessage(response.responseBody);
              }
            }
          },
          // 客户端request超时回调函数
          onClientTimeout(request) {
            if (service.showPrompt) {
              console.log('onClientTimeout');
            }
          },
          // 收到未知错误回调函数
          onError(response) {
            console.log('res', response);
            if (service.showPrompt) {
              console.log('onError');
            }
          },
          // 成功重建连接回调函数
          onReconnect(request, response) {
            if (service.showPrompt) {
            }
          },
          // transport类型不支持回调函数
          onTransportFailure(errMsg, request) {
            if (service.showPrompt) {
            }
          }

        };

        connectedEndPoint = atmosphere.subscribe(request);
      } else {
        console.log('No room has been created or connection has been established already!');
      }
        };

        /**
         *  退出标绘room
         */
        service.leave = function() {
            atmosphere.unsubscribe();
            connectedEndPoint = null;
        };

        /**
         *  发送标绘内容
         */
        service.send = function(message) {
          console.log('通过atmosphere发送的消息：%o', message);
          if (connectedEndPoint == null) {
            console.log('please establish the connection before sending message!');
            return false;
          }

          if (connectedEndPoint.request.isOpen === false) {
            console.log('current connection is closed!');
            return false;
          }
          const msg = JSON.stringify(message);
          connectedEndPoint.push(msg);
        };

		return service;
	}
};

export default RoomService;