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;
};

/**
 * @api {post} connector.entryHandler.entry 建立连接-登录-入口 entry
 * @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();

	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(null, 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;
	}

	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);
};