/**
 * 用户端点。
 */
"use strict";

let ObjectUtil = require('../../util/object.util');
let ControllerUtil = require('../../util/controller.util');
let Users = require('../../models/user/users');

let express = require('express');
let router = express.Router();
let http = require('http');

let configFile = require('../../include/commons').CONFIG_FILE;
let config = require('../../resources/config/' + configFile);
let log = require("../../util/log.js");

const APIv2 = require('../../include/endpoints').APIv2;

/**
 * 登录。用户登录后，更新数据库中的在线状态。
 *
 * 请求URL：
 *  /users/login?user_id=sand&token=0PFWlKmLBN9YzhCfFWVgYA&client_id=H6FYbDejks6VjMmW3uH7V6&platform=0
 *
 * 返回值：
 *  登录后的token.
 *
 * 参数说明：
 *  user_id：用户ID
 *  token：个推的token
 *  client_id：个推的client id
 *  platform：平台类型，0为iOS，1为Android
 */
router.post(APIv2.Users.Login, function (req, res) {
    let appStatus = req.body;
    let testing = ObjectUtil.fieldsCheck(appStatus, "user_id", "token", "client_id", "platform");
    if (!testing.pass) {
        throw {httpStatus: 406, message: testing.message}
    }

    let users = new Users();
    ControllerUtil.regModelEventHandler(users, res);

    users.login(appStatus.user_id, appStatus.platform, appStatus.token, appStatus.client_id);
});

/**
 * 更新客户端状态。
 *
 * 请求URL：
 *  /users/:user_id/status
 *
 * POST参数格式:
 *  {status: 1}, app状态，0在后台，1在前台
 */
router.put(APIv2.Users.UserStatus, function (req, res) {
    let userId = req.params.user_id;
    let status = req.body;
    if (!ObjectUtil.isJsonObject(status)) {
        throw {httpStatus: 406, message: "Problems parsing json."};
    }

    if (userId === null) {
        throw {httpStatus: 406, message: 'Validation Failed. Missing field(s): user_id.'};
    }

    let users = new Users();
    ControllerUtil.regModelEventHandler(users, res);

    users.updateAppStatus(userId, status.app_in_bg);
});

/**
 * 退出。
 *
 * 请求URL：
 *  /users/logout?user_id=sand
 *
 * 参数：
 *  user_id：用户ID
 */
router.delete(APIv2.Users.Logout, function (req, res) {
    let userId = req.query.user_id;
    if (userId == null) {
        throw {httpStatus: 406, message: 'Logout Failed. Missing field: user_id.'};
    }

    let userStatus = new Users();
    ControllerUtil.regModelEventHandler(userStatus, res);

    userStatus.logout(userId);
});

module.exports = router;