im.doctor/src/server/endpoints/v2/session.endpoint.js

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

/**
 * 创建会话。对MUC会话而言，需要创建的是议题，如果是第一次创建议题，那应该附带创建会话，而不是直接创建会话。
 *
 * session_type：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: /sessions
 * 参数：
 * {
 *  session_id: 会话ID，非必须，仅对群消息使用。
 *  session_type: 会话类型，必须。
 *  session_name: 会话名称,
 *  participants: 此会话的成员列表，格式：["userId1:role", "userId2:role"]，用户的ID及角色。
 * }
 */
router.post("/", function (req, res) {
    let payload = req.body;
    let testing = ObjectUtil.fieldsCheck(payload, 'participants', 'session_name', 'session_type');
    if (!testing.pass) {
        throw testing.message;
    }

    let participants = payload.participants;
    let sessionName = payload.session_name;
    let sessionType = payload.session_type;
    let sessionId = null;

    if (payload.session_type == SESSION_TYPES.GROUP) {
        if(!payload.hasOwnProperty('session_id') && payload.session_id.trim().length > 0){
            throw {httpStatus: 406, message: 'Field "session_id" is necessary and cannot be empty for GROUP session.'};
        }

        sessionId = payload.session_id;
    }

    let sessions = new Sessions();
    ControllerUtil.regModelEventHandler(sessions, res);

    sessions.createSession(sessionId, sessionName, sessionType, participants);
});

/**
 * 获取会话列表
 *
 * 请求URL /sessions?user_id=3121&page=0&size=10
 */
router.get("/", function (req, res) {
    let page = req.query.page;
    let size = req.query.size;
    let userId = req.query.user_id;
    if (!page) {
        throw {httpStatus: 406, message: 'Missing page.'};
    }
    if (!size) {
        throw {httpStatus: 406, message: 'Missing size.'};
    }
    if (!userId) {
        throw {httpStatus: 406, message: 'Missing user.'};
    }

    let sessions = new Sessions();
    ControllerUtil.regModelEventHandler(sessions, res);

    sessions.getUserSessions(userId, page, size);
});

/**
 * 发送消息
 *
 * 请求URL:
 *  /sessions/:session_id/messages
 *
 * 消息体：
 *  {
 *      sender_id: bea851fc,
 *      sender_name: 李毅,
 *      content_type: 1,
 *      content: 李医生，你好
 *  }
 */
router.post(APIv2.Sessions.Messages, function (req, res) {
    let payload = req.body;
    let testing = ObjectUtil.fieldsCheck(payload, "sender_id", "sender_name", "content_type", "content");
    if (!testing.pass) {
        throw {httpStatus: 406, message: testing.message}
    }

    let sessions = new Sessions();
    ControllerUtil.regModelEventHandler(sessions, res);

    payload.timestamp = new Date();
    sessions.saveMessageBySession(req.params.session_id, payload);
});

/**
 * 获取消息
 *
 * 请求URL:
 *  /sessions/:session_id/messages?session_id=blabla&user_id=abc&start_message_id=100&end_message_id=20
 */
router.get(APIv2.Sessions.Messages, function (req, res) {
    let page = req.query.page;
    let size = req.query.size;
    let user = req.query.user;
    let sessionId = req.query.sessionId;
    if (!page) {
        throw {httpStatus: 406, message: 'Missing page.'};
    }
    if (!size) {
        throw {httpStatus: 406, message: 'Missing size.'};
    }
    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, size);
});

/**
 * 某个聊天记录置顶操作
 *
 * 请求URL /stick?user=3121&sessionId=testsessionmsg1
 */
router.post(APIv2.Sessions.SessionSticky, 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.delete(APIv2.Sessions.SessionSticky, 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);
});

/**
 * 移除成员
 * user:移除的人员
 * sessionId 会话ID
 */
router.delete(APIv2.Sessions.Participant, 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);
});

/**
 * 增加成员
 * user:移除的人员
 * sessionId 会话ID
 */
router.put(APIv2.Sessions.Participant, 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;