/**
 * author: Sand
 * since: 2016/11/17
 */
"use strict";

let log = require("../util/log.js");

let clientCache = require('../models/socket.io/client.cache').clientCache();
let PatientClient = require('./../models/socket.io/patient.client');
let DoctorClient  = require('./../models/socket.io/doctor.client');
let Sessions = require('../models/sessions/sessions');
let Users = require('../models/user/users');

let sessions = new Sessions();
let users = new Users();

class SocketHandler {
    constructor(socketServer) {
        this._socketServer = socketServer;
    }

    /**
     * 启用事件监听。
     */
    start() {
        let socketServer = this._socketServer;
        socketServer.sockets.on('connection', function (socket) {
            // 客户端注册
            socket.on('login', function (data) {
                if (!data.userId) {
                    socketServer.sockets.emit('error', {message: 'Missing fields(s): userId.'});
                } else {
                    if(clientCache.removeByUserId(data.userId)){
                        log.info("User " + data.userId + " already login");
                        return;
                    }

                    log.info('User ' + data.userId + ' login');
                    if(!data.clientType||data.clientType=="patient"){
                        let patientClient = new PatientClient(socket, socketServer);
                        patientClient.userId = data.userId;
                        patientClient.password = data.password;
                        patientClient.clientType = data.clientType||"patient";
                        clientCache.addClient(patientClient);

                        users.login(data.userId, 10, '', '');

                        socket.emit('ack', {});
                    }else{
                        let doctorClient = new DoctorClient(socket, socketServer);
                        doctorClient.userId = data.userId;
                        doctorClient.password = data.password;
                        doctorClient.clientType = data.clientType;
                        doctorClient.sessionId = data.sessionId;
                        clientCache.addClient(doctorClient);
                        socket.emit('ack', {});
                    }
                }
            });

            // 接收客户端消息
            socket.on('message', function (data) {
                log.info('Got message from ' + clientCache.findBySocket(socket).userId);

                let sessionId = data.session_id;
                let message = data.message;
                message.timestamp = new Date();

                /*sessions.createSession(sessionId, "Let's talk!", 1, ['504a0bcddb1e4e37a0306b39c51900b5', 'cd92414c-5b06-11e6-8344-fa163e8aee56'], function (err, res) {
                    sessions.saveMessageBySession(sessionId, message);
                });*/
                sessions.saveMessageBySession(sessionId, message);
            });

            // 客户端退出
            socket.on('logout', function (data) {
                let client = clientCache.findBySocket(socket);
                if (client) {
                    log.info('User logout: ' + client.userId);
                    clientCache.removeByUserId(client.userId);
                }
            });

            // 客户端断开
            socket.on('disconnect', function () {
                let patientClient = clientCache.findBySocket(socket);
                if (patientClient) {
                    log.info("User disconnect: ", patientClient.userId);
                    clientCache.removeByUserSocket(socket);
                }
            });

            socket.emit('welcome', {message: 'Welcome to connect IM server, please login.'});
        });
    }
}

module.exports = SocketHandler;