var logger = require("pomelo-logger").getLogger(__filename);
const userDao = require("../../../dao/userDao");

module.exports = function (app) {
  return new Handler(app);
};

var Handler = function (app) {
  this.app = app;
  this.channelService = this.app.get("channelService");
};

/** @api {post} connector.entryHandler.entry entry 建立连接-登录-入口
 *
 * @apiGroup connector
 *
 * @apiParam {String} uid 用户ID
 *
 * @apiSuccess {Number} code 状态码
 * @apiSuccess {String} msg 消息
 *
 * @apiSuccessExample {json} Success-Response:
 * {
 * "code": 200,
 * "msg": "game server is ok."
 * }
 *
 * @apiErrorExample {json} Error-Response:
 * {
 * "code": 500
 * "error": true
 * }
 *
 */
Handler.prototype.entry = function (msg, session, next) {
  const uid = msg.uid;
  const sessionService = this.app.get("sessionService");
  const serverId = this.app.serverId;

  console.log(`-------entry ${session.id} : ${uid}`);

  // 重复登录检查
  // if( !! sessionService.getByUid(uid)) {
  // 	console.log(`-------kick ${session.id} : ${uid}`)
  // 	sessionService.kick(uid, ()=>{
  // 		console.log(`-------kicked ${session.id} : ${uid}`)
  // 		bindUser();
  // 		return;
  // 	})
  // }
  (bindUser.bind(this))();

  async function bindUser() {
    const user = await userDao.getUserInfo(msg.uid);
    console.log(`-------bind ${session.id} : ${uid}`);
    session.bind(uid, () => {
      session.set("uid", uid);
      session.set("userInfo", user);
      session.set("sid", serverId);
      session.on("closed", onUserLeave.bind(this, this.app));
      session.pushAll((err) => {
        if (err) {
          logger.error("error: %j", err.stack);
          next(null, { code: 500, error: true });
          return;
        }
        next(null, { code: 200, msg: "game server is ok." });
      });
    });
  }
};

var onUserLeave = function (app, session, reason) {
  if (!session || !session.uid) {
    return;
  }

  console.log(session);
  const channelId = "worldChannel";
  const channel = this.channelService.getChannel(channelId, false);
  if (channel) {
    channel.leave(session.uid, session.get("sid"));
  }

  logger.debug(`onUserLeave ${session.id} : ${session.uid}`);
};

/**
 * Publish route for mqtt connector.
 *
 * @param  {Object}   msg     request message
 * @param  {Object}   session current session object
 * @param  {Function} next    next step callback
 * @return {Void}
 */
Handler.prototype.publish = function (msg, session, next) {
  var result = {
    topic: "publish",
    payload: JSON.stringify({ code: 200, msg: "publish message is ok." }),
  };
  next(null, result);
};

/**
 * Subscribe route for mqtt connector.
 *
 * @param  {Object}   msg     request message
 * @param  {Object}   session current session object
 * @param  {Function} next    next step callback
 * @return {Void}
 */
Handler.prototype.subscribe = function (msg, session, next) {
  var result = {
    topic: "subscribe",
    payload: JSON.stringify({ code: 200, msg: "subscribe message is ok." }),
  };
  next(null, result);
};