/**
 * 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 Doctor = require('../models/doctor');
let doctor = new Doctor();

let Group = require('../models/group');
let group = new Group();

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

    /**
     * 启用事件监听。
     *
     * @param socket
     */
    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 {
                    log.info('User login: ' + data.userId);

                    let patientClient = new PatientClient(socket, socketServer);
                    patientClient.userId = data.userId;
                    patientClient.password = data.password;

                    clientCache.addClient(patientClient);

                    socketServer.sockets.emit('ack', {});
                }
            });

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

                let targetType = data.targetType;
                let message = data.message;

                if (targetType == 1) {
                    doctor.sendMessage(message);
                } else {
                    group.sendMessage(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;