/**
 * 会话接口。
 *
 * author: Sand
 * since: 12/15/2016
 */
"use strict";

let express = require('express');
let router = express.Router();
let http = require('http');
let log = require('../util/log.js');

let ObjectUtil = require("../util/object.util.js");
let ControllerUtil = require('../util/controller.util');
let Sessions = require('../models/sessions/sessions');
let Participants = require('../models/sessions/participants');

const APIv1 = require('../include/endpoints').APIv1;

/**
 * 获取用户的聊天列表
 * 请求URL /sessions?page=0&pagesize=10&user=3121
 */
router.get(APIv1.Sessions.SessionList,function(req,res){
    let page = req.query.page;
    let pagesize = req.query.pagesize;
    let user = req.query.user;
    if (!page) {
        throw {httpStatus: 406, message: 'Missing page.'};
    }
    if (!pagesize) {
        throw {httpStatus: 406, message: 'Missing pagesize.'};
    }
    if (!user) {
        throw {httpStatus: 406, message: 'Missing user.'};
    }
    let sessions = new Sessions();
    ControllerUtil.regModelEventHandler(sessions, res);
    sessions.getUserSessions(user,page,pagesize);
});

/**
 * 获取用户的聊天信息列表
 * 请求URL /messages?page=0&pagesize=10&user=3121&sessionId=testsessionmsg1
 */
router.get(APIv1.Sessions.MessageList,function(req,res){
    let page = req.query.page;
    let pagesize = req.query.pagesize;
    let user = req.query.user;
    let sessionId =req.query.sessionId;
    if (!page) {
        throw {httpStatus: 406, message: 'Missing page.'};
    }
    if (!pagesize) {
        throw {httpStatus: 406, message: 'Missing pagesize.'};
    }
    if (!user) {
        throw {httpStatus: 406, message: 'Missing user.'};
    }
    if (!sessionId) {
        throw {httpStatus: 406, message: 'Missing sessionId.'};
    }
    let sessions = new Sessions();
    ControllerUtil.regModelEventHandler(sessions, res);
    sessions.getMessages(sessionId,user,page,pagesize);
});

/**
 * 某个聊天记录置顶操作
 * 请求URL /stick?user=3121&sessionId=testsessionmsg1
 */
router.post(APIv1.Sessions.StickSession,function(req,res){
    let user = req.query.user;
    let sessionId =req.query.sessionId;
    if (!user) {
        throw {httpStatus: 406, message: 'Missing user.'};
    }
    if (!sessionId) {
        throw {httpStatus: 406, message: 'Missing sessionId.'};
    }
    let sessions = new Sessions();
    ControllerUtil.regModelEventHandler(sessions, res);
    sessions.stickSession(sessionId,user);
});

/**
 * 取消置顶
 * 请求URL /cancelStick?user=3121&sessionId=testsessionmsg1
 */
router.post(APIv1.Sessions.UnStickSession,function(req,res){
    let user = req.query.user;
    let sessionId =req.query.sessionId;
    if (!user) {
        throw {httpStatus: 406, message: 'Missing user.'};
    }
    if (!sessionId) {
        throw {httpStatus: 406, message: 'Missing sessionId.'};
    }
    let sessions = new Sessions();
    ControllerUtil.regModelEventHandler(sessions, res);
    sessions.cancelStickSession(sessionId,user);
});


/**
 * 创建讨论组
 * sessionType：1表示MUC会话，2表示P2P，3表示群会话，4表示临时讨论组
 * users 讨论组包含的用户标示
 * sessionId 会话ID
 * 请求URL /create?sessionId=0&users={10:1,20:1}&name=3121&sessionType=2
 */
router.get(APIv1.Sessions.CreateSession,function(req,res){
    let sessionId = req.query.sessionId;
    let users = req.query.users;
    let name = req.query.name;
    let sessionType = req.query.sessionType;
    if (!sessionId) {
        throw {httpStatus: 406, message: 'Missing sessionId.'};
    }
    if (!users) {
        throw {httpStatus: 406, message: 'Missing users.'};
    }
    if (!name) {
        throw {httpStatus: 406, message: 'Missing name.'};
    }
    if (!sessionType) {
        throw {httpStatus: 406, message: 'Missing sessionType.'};
    }
    let sessions = new Sessions();
    ControllerUtil.regModelEventHandler(sessions, res);
    sessions.createSession(sessionId,name,sessionType,users);
});

/**
 * 发送消息
 * message:消息发送对象
 * sessionId 会话ID
 */
router.post(APIv1.Sessions.SendMsg,function(req,res){
    let message = req.body;
    if (!ObjectUtil.isJsonObject(message)) {
        throw {httpStatus: 406, message: 'Problems parsing JSON.'}
    }
    // 字段判断
    let testing = ObjectUtil.fieldsCheck(message, "senderId", "senderName", "contentType", "content");
    if (!testing.pass) {
        throw {httpStatus: 406, message: testing.message}
    }
    let sessionId = req.query.sessionId;
    if (!sessionId) {
        throw {httpStatus: 406, message: 'Missing sessionId.'};
    }
    let type = req.query.type;
    if (!type) {
        throw {httpStatus: 406, message: 'Missing type.'};
    }
    let sessions = new Sessions();
    ControllerUtil.regModelEventHandler(sessions, res);
    message.timestamp=new Date();
    sessions.saveMessageBySession(message,sessionId,type);
});


/**
 * 发送消息
 * message:消息发送对象
 * sessionId 会话ID
 */
router.post(APIv1.Sessions.SendMsg,function(req,res){
    let message = req.body;
    if (!ObjectUtil.isJsonObject(message)) {
        throw {httpStatus: 406, message: 'Problems parsing JSON.'}
    }
    // 字段判断
    let testing = ObjectUtil.fieldsCheck(message, "senderId", "senderName", "contentType", "content");
    if (!testing.pass) {
        throw {httpStatus: 406, message: testing.message}
    }
    let sessionId = req.query.sessionId;
    if (!sessionId) {
        throw {httpStatus: 406, message: 'Missing sessionId.'};
    }
    let sessions = new Sessions();
    ControllerUtil.regModelEventHandler(sessions, res);
    message.timestamp=new Date();
    sessions.saveMessageBySession(message,sessionId);
});


/**
 * 移除人员
 * user:移除的人员
 * sessionId 会话ID
 */
router.post(APIv1.Sessions.RemoveSessionUser,function(req,res){
    let user = req.query.user;
    if (!user) {
        throw {httpStatus: 406, message: 'Missing user.'};
    }
    let sessionId = req.query.sessionId;
    if (!sessionId) {
        throw {httpStatus: 406, message: 'Missing sessionId.'};
    }
    let participants = new Participants();
    ControllerUtil.regModelEventHandler(sessions, res);
    participants.deleteUser(sessionId,user);
});

/**
 * 移除人员
 * user:移除的人员
 * sessionId 会话ID
 */
router.post(APIv1.Sessions.PushSessionUser,function(req,res){
    let user = req.query.user;
    if (!user) {
        throw {httpStatus: 406, message: 'Missing user.'};
    }
    let sessionId = req.query.sessionId;
    if (!sessionId) {
        throw {httpStatus: 406, message: 'Missing sessionId.'};
    }
    let participants = new Participants();
    ControllerUtil.regModelEventHandler(sessions, res);
    participants.pushUser(sessionId,user);
});

module.exports = router;