im.doctor/src/server/models/client/wechat.client.js

/**
 * 用户微信客户端。
 */
"use strict";

let RedisClient = require('../../repository/redis/redis.client');
let RedisModel = require('../redis.model');
let ObjectUtil = require("../../util/object.util.js");
let ModelUtil = require('../../util/model.util');
let WechatSDK = require('../../util/wechat.sdk');
let PatientRepo = require('../../repository/mysql/patient.repo');
let TopicRepo = require("../../repository/mysql/topics.repo.js");
let ParticipantRepo = require("../../repository/mysql/participant.repo");
let redisConn = RedisClient.redisClient().connection;
let clientCache = require('../socket.io/client.cache').clientCache();
let configFile = require('../../include/commons').CONFIG_FILE;
let config = require('../../resources/config/' + configFile);
let log = require("../../util/log.js");
let https = require('https');
let async = require('async');

const CONTENT_TYPES = require('../../include/commons').CONTENT_TYPES;
const SESSION_TYPES = require('../../include/commons').SESSION_TYPES;
const SOCKET_TYPES = require('../../include/commons').SOCKET_TYPES;
const REDIS_KEYS = require('../../include/commons').REDIS_KEYS;

class WechatClient extends RedisModel {
    constructor() {
        super();
    }

    /**
     * 取得用户微信端状态。若Redis中找不到，则从MySQL中查找。
     *
     * @param userId
     * @param handler
     */
    static getWechatStatus(userId, handler) {
        redisConn.hgetallAsync(RedisModel.makeRedisKey(REDIS_KEYS.UserWechatStatus, userId))
            .then(function (status) {
                if (status == null) {
                    PatientRepo.findWechatOpenId(userId, handler);
                } else {
                    handler(null, {openid: status.openid});
                }
            })
            .catch(function (err) {
                handler(err, null);
            });
    }

    /**
     * 向微信端用户发送消息。若用户微信端在线，通过Web Socket推送给患者，如果不在线则通过微信的模板消息。
     *
     * 只推送文本、图片及语音消息
     *
     * @param targetUserId
     * @param message 消息体
     */
    static sendMessage(targetUserId, targetUserName, message) {
        if (message&&(message.content_type == CONTENT_TYPES.PlainText ||
            message.content_type == CONTENT_TYPES.Image ||
            message.content_type == CONTENT_TYPES.Audio||
            message.content_type == CONTENT_TYPES.PrescriptionCheck ||
            message.content_type == CONTENT_TYPES.PrescriptionBloodStatus ||
            message.content_type == CONTENT_TYPES.PrescriptionFollowupContent)) {
            let patientClient = clientCache.findById(targetUserId);
            let doctorClient = clientCache.findByIdAndType(message.sender_id,SOCKET_TYPES.DOCTOR);
            if (patientClient) {
                log.warn("User's wechat endpoint is online, sending via web socket. User id: ", targetUserId);
                WechatClient.sendViaWebSocket(patientClient.socket, message);

                if(doctorClient){
                    log.error("doctor sessionid "+doctorClient.sessionId);
                    log.error("patient sessionid "+patientClient.sessionId);
                    if(patientClient.sessionId==doctorClient.sessionId){
                    //用户socket在线，推送给用户后，告知医生此消息已读
                        WechatClient.updateParticipantLastFetchTime(doctorClient.sessionId, targetUserId, ObjectUtil.timestampToLong(message.timestamp));
                        WechatClient.sendReadDoctor(doctorClient.socket, message);
                    }
                }else{
                    log.error("doctor client not found");
                }
            } else {
                log.info("User's wechat endpoint is not online, sending via wechat template message. User id: ", targetUserId);
                WechatClient.sendViaMessageTemplate(targetUserId, targetUserName, message);
            }
        } else if(message.content_type == CONTENT_TYPES.TopicEnd){
            let patientClient = clientCache.findById(targetUserId);
            if(patientClient)//结束咨询的告知患者
                WechatClient.sendViaWebSocket(patientClient.socket, message);
        }
    };

    static sendViaWebSocket(socket, message) {
        socket.emit('message', {
            id: message.id,
            session_id: message.session_id,
            sender_id: message.sender_id,
            sender_name: message.sender_name,
            content_type: message.content_type,
            content: message.content,
            timestamp: ObjectUtil.timestampToLong(message.timestamp),
            type: message.content_type,          // legacy support
            name: message.sender_name,
            sender_img : message.sender_img
        });
    }

    static sendAllRead(doctorId,sessionId){
        let doctorClient = clientCache.findByIdAndType(doctorId,SOCKET_TYPES.DOCTOR);
        if(doctorClient){
            if(doctorClient.sessionId==sessionId){
                doctorClient.socket.emit('message',{ read:"all"});
            }else{
                log.warn(" doctor not in the same session ");
            }
        }else{
            log.warn(doctorId+" target doctor is not online!");
        }
    }

    static sendMucAllRead(doctorId,loginUserId,sessionId){

        let loginClinet = clientCache.findByIdAndType(loginUserId,SOCKET_TYPES.DOCTOR);
        if(loginClinet){
            //muc是医生来获取数据不能更新成已读
            log.warn("type is muc login is doctor not send all read to other doctor!")
            return;
        }
        let doctorClient = clientCache.findByIdAndType(doctorId,SOCKET_TYPES.DOCTOR);
        if(doctorClient){
            if(doctorClient.sessionId==sessionId){
                doctorClient.socket.emit('message',{ read:"all"});
            }else{
                log.warn(" doctor not in the same session ");
            }
        }else{
            log.warn(doctorId+" target doctor is not online!");
        }
    }



    static sendReadDoctor(socket, message) {
        socket.emit('message', {
            id: message.id,
            session_id: message.session_id,
            sender_id: message.sender_id,
            sender_name: message.sender_name,
            content_type: message.content_type,
            content: message.content,
            timestamp: ObjectUtil.timestampToLong(message.timestamp),
            type: message.content_type,          // legacy support
            name: message.sender_name,
            read:"one"
        });
    }

    static sendReadDoctorByDoctorId(doctorId, message) {
        let doctorClient = clientCache.findByIdAndType(doctorId,SOCKET_TYPES.DOCTOR);
        let pc_doctorClient = clientCache.findByIdAndType("pc_"+doctorId,SOCKET_TYPES.PC_DOCTOR);
        if(!doctorClient&&!pc_doctorClient){
            log.warn("target doctor is not online!");
            return;
        }
        let sendDoctorClient = clientCache.findByIdAndType(message.sender_id,SOCKET_TYPES.DOCTOR);
        if(!sendDoctorClient){
            sendDoctorClient = clientCache.findByIdAndType("pc_"+message.sender_id,SOCKET_TYPES.PC_DOCTOR);
        }
        var count = 0;
        if(doctorClient&&sendDoctorClient&&sendDoctorClient.sessionId==doctorClient.sessionId){
            WechatClient.updateParticipantLastFetchTime(doctorClient.sessionId, doctorId, ObjectUtil.timestampToLong(message.timestamp));
            sendDoctorClient.socket.emit('message', {
                id: message.id,
                session_id: message.session_id,
                sender_id: message.sender_id,
                sender_name: message.sender_name,
                content_type: message.content_type,
                content: message.content,
                timestamp: ObjectUtil.timestampToLong(message.timestamp),
                type: message.content_type,          // legacy support
                name: message.sender_name,
                read:"one"
            });
        }else{
            count++;
        }
        //发送pc版医生端
        if(pc_doctorClient&&sendDoctorClient&&sendDoctorClient.sessionId==pc_doctorClient.sessionId){
            WechatClient.updateParticipantLastFetchTime(pc_doctorClient.sessionId, doctorId, ObjectUtil.timestampToLong(message.timestamp));
            pc_doctorClient.socket.emit('message', {
                id: message.id,
                session_id: message.session_id,
                sender_id: message.sender_id,
                sender_name: message.sender_name,
                content_type: message.content_type,
                content: message.content,
                timestamp: ObjectUtil.timestampToLong(message.timestamp),
                type: message.content_type,          // legacy support
                name: message.sender_name,
                read:"one"
            });
        }else{
            count++;
        }

        if(count==2){
            log.warn("doctor is not in the same session or is not online");
        }
    }

    static sendSocketMessageToDoctor(doctorId, message) {
        let doctorClient = clientCache.findByIdAndType(doctorId,SOCKET_TYPES.DOCTOR);
        let pc_doctorClient = clientCache.findByIdAndType("pc_"+doctorId,SOCKET_TYPES.PC_DOCTOR);
        if(!doctorClient&&!pc_doctorClient){
            log.warn("target doctor is not online!");
            return;
        }
        let sendClient = clientCache.findByIdAndType(message.sender_id,SOCKET_TYPES.DOCTOR);//app医生发送的消息
        if(!sendClient){//pc医生发送的消息
            sendClient = clientCache.findByIdAndType("pc_"+message.sender_id,SOCKET_TYPES.PC_DOCTOR);
        }
        if(!sendClient){//居民发送的消息
            sendClient = clientCache.findByIdAndType(message.sender_id,SOCKET_TYPES.PATIENT);
        }

        var count = 0;
        if(doctorClient&&sendClient&&sendClient.sessionId==doctorClient.sessionId){
            WechatClient.updateParticipantLastFetchTime(doctorClient.sessionId, doctorId, ObjectUtil.timestampToLong(message.timestamp));
            doctorClient.socket.emit('message', {
                id: message.id,
                session_id: message.session_id,
                sender_id: message.sender_id,
                sender_name: message.sender_name,
                content_type: message.content_type,
                content: message.content,
                timestamp: ObjectUtil.timestampToLong(message.timestamp),
                type: message.content_type,          // legacy support
                name: message.sender_name,
            });
        }else{
            count++;
        }

        //发送pc端
        if(pc_doctorClient&&sendClient&&sendClient.sessionId==pc_doctorClient.sessionId){
            WechatClient.updateParticipantLastFetchTime(pc_doctorClient.sessionId, doctorId, ObjectUtil.timestampToLong(message.timestamp));
            pc_doctorClient.socket.emit('message', {
                id: message.id,
                session_id: message.session_id,
                sender_id: message.sender_id,
                sender_name: message.sender_name,
                content_type: message.content_type,
                content: message.content,
                timestamp: ObjectUtil.timestampToLong(message.timestamp),
                type: message.content_type,          // legacy support
                name: message.sender_name,
            });
        }else{
            count++;
        }

        if(count==2){
            log.warn("doctor is not in the same session or is not online");
        }
    }

    static sendPcImSocket(targetId, message, sessionType) {
        if (message.content_type == CONTENT_TYPES.PlainText ||
            message.content_type == CONTENT_TYPES.Image ||
            message.content_type == CONTENT_TYPES.Audio||
            message.content_type == CONTENT_TYPES.Video||
            message.content_type == CONTENT_TYPES.GoTo||
            sessionType==SESSION_TYPES.SYSTEM) {

            let pcim_doctorClient = clientCache.findByIdAndType("pcim_"+targetId,SOCKET_TYPES.PCIM_DOCTOR);
            if(pcim_doctorClient) {
                 let customData = {
                    session_id: message.session_id||'',
                    session_type: sessionType,
                    from: message.sender_id|| '',
                    data: message.content,
                    business_type: message.business_type || 1
                };
                pcim_doctorClient.socket.emit('message', {
                    session_id: message.session_id||'',
                    session_type: sessionType,
                    from: message.sender_id|| '',
                    data: message.content,
                    business_type: message.business_type || 1
                });

            }
        }
    }

    /**
     * 发送微信模板消息给居民
     *
     * @param targetUserId
     * @param message
     */
    static sendViaMessageTemplate(targetUserId, targetUserName, message) {
        async.waterfall([
                // 获取微信openid
                function (callback) {
                    PatientRepo.findWechatOpenIds(targetUserId, function (err, res) {
                        if (err) {
                            ModelUtil.logError("Get wechat openid failed", err);
                            return;
                        }
                        var map = new Map();
                        res.forEach(function (participant) {
                            let openid = participant.openid;
                            if (targetUserId==participant.code) {
                                if (!openid) {
                                    ModelUtil.logError("User haven't bound with wechat, user id: " + targetUserId);
                                }
                                map.set("openid",participant);
                            }else {
                                if(!map.has(openid)){
                                    map.set(openid,participant);
                                }
                            }
                        })

                        //
                        // let openid = result && result.length > 0 ? result[0].openid : null;
                        // if (!openid) {
                        //     ModelUtil.logError("User haven't bound with wechat, user id: " + targetUserId);
                        //     return;
                        // }
                        //
                        // log.warn("Send via wechat message template, user id: " + targetUserId + ", openid: " + openid);

                        callback(null, map);
                    });
                },
                // 获取议题信息
                function (map, callback) {
                    TopicRepo.findLastTopicStatusAndType(message.session_id, function (err, res) {
                        if (err) {
                            ModelUtil.logError("Get topic failed", err);
                            return;
                        }

                        if (!res || res.length == 0) {
                            ModelUtil.logError("Unable to find session last topic");
                            return;
                        }
                        callback(null, map, message.sender_name, res[0]);
                    });
                },
                // 发送消息
                function (map, senderName, topic,callback) {
                    let replyContent = message.content;
                    switch (Number.parseInt(message.content_type)) {
                        case CONTENT_TYPES.Image:
                            replyContent = "[图片]";
                            break;
                        case CONTENT_TYPES.Audio:
                            replyContent = "[语音]";
                            break;
                        default:
                            break;
                    }

                    var patient = map.get("openid");
                    map.delete("openid");
                    let agent = topic.agent;
                    let consultTitle = topic.type==8?"续方":"健康";
                    let description = topic.type==8?"续方咨询":topic.description;
                    let url = config.wechatConfig.baseUrl + (topic.type==8?"/wx/html/yszx/html/prescription-consulting.html":"/wx/html/yszx/html/consulting-doctor.html");
                    if(agent){//代理人发起的议题
                        var agentOpenid = "";
                        if(map.size>0){
                            for(var key of map.keys()){
                                var member = map.get(key);
                                if(agent == member.code){
                                    agentOpenid = key;
                                    var openid = key;
                                    var first = "您的家人("+patient.name+")的"+consultTitle+"咨询有新的回复";
                                    // 发送模板消息
                                    WechatSDK.sendTemplateMessage({
                                        touser: openid,
                                        name: member.name,
                                        patient: member.code,
                                        template_id: config.wechatConfig.template.consultTemplate,
                                        url: url + "?openid=" + openid + "&type="+topic.type+"&doctor="+message.sender_id+
                                        "&consult=" + topic.id + "&toUser=" + member.code + "&toName=" + member.name+"&represented="+patient.code,
                                        data: {
                                            first: {value: first, color: "#000000"}
                                            , remark: {value: "", color: "#000000"}
                                            , keyword1: {value: description, color: "#000000"}
                                            , keyword2: {value: replyContent, color: "#000000"}
                                            , keyword3: {value: senderName, color: "#000000"}
                                        }
                                    }, function (err, res) {
                                        err ? log.error(err) : log.info(res);
                                    });
                                }
                            }
                        }
                        if(patient.openid&&patient.openid!=agentOpenid){
                            var first = "您的"+consultTitle+"咨询有新的回复";
                            // 发送模板消息
                            WechatSDK.sendTemplateMessage({
                                touser: patient.openid,
                                name: targetUserName,
                                patient: targetUserId,
                                template_id: config.wechatConfig.template.consultTemplate,
                                url: url + "?openid=" + patient.openid +"&type="+topic.type+"&doctor="+message.sender_id+
                                "&consult=" + topic.id + "&toUser=" + targetUserId + "&toName=" + targetUserName+"&represented="+patient.code,
                                data: {
                                    first: {value: first, color: "#000000"}
                                    , remark: {value: "", color: "#000000"}
                                    , keyword1: {value: description, color: "#000000"}
                                    , keyword2: {value: replyContent, color: "#000000"}
                                    , keyword3: {value: senderName, color: "#000000"}
                                }
                            }, function (err, res) {
                                err ? log.error(err) : log.info(res);
                            });
                        }

                    }else {//自己发起的议题
                        // 发送模板消息
                        if(patient.openid){
                            WechatSDK.sendTemplateMessage({
                                touser: patient.openid,
                                name: targetUserName,
                                patient: targetUserId,
                                template_id: config.wechatConfig.template.consultTemplate,
                                url: url + "?openid=" + patient.openid +"&type="+topic.type+"&doctor="+message.sender_id+
                                "&consult=" + topic.id + "&toUser=" + targetUserId + "&toName=" + targetUserName+"&represented="+patient.code,
                                data: {
                                    first: {value: "您的"+consultTitle+"咨询有新的回复", color: "#000000"}
                                    , remark: {value: "", color: "#000000"}
                                    , keyword1: {value: description, color: "#000000"}
                                    , keyword2: {value: replyContent, color: "#000000"}
                                    , keyword3: {value: senderName, color: "#000000"}
                                }
                            }, function (err, res) {
                                err ? log.error(err) : log.info(res);
                            });
                        }
                        if(map.size>0){
                            for(var key of map.keys()){
                                if(!patient.openid||key!=patient.openid){
                                    var member = map.get(key);
                                    var openid = key;
                                    var first = "您的家人("+patient.name+")的"+consultTitle+"咨询有新的回复";
                                    // 发送模板消息
                                    WechatSDK.sendTemplateMessage({
                                        touser: openid,
                                        name: member.name,
                                        patient: member.code,
                                        template_id: config.wechatConfig.template.consultTemplate,
                                        url: url + "?openid=" + openid +"&type="+topic.type+"&doctor="+message.sender_id+
                                        "&consult=" + topic.id + "&toUser=" + member.code + "&toName=" + member.name+"&represented="+patient.code,
                                        data: {
                                            first: {value: first, color: "#000000"}
                                            , remark: {value: "", color: "#000000"}
                                            , keyword1: {value: description, color: "#000000"}
                                            , keyword2: {value: replyContent, color: "#000000"}
                                            , keyword3: {value: senderName, color: "#000000"}
                                        }
                                    }, function (err, res) {
                                        err ? log.error(err) : log.info(res);
                                    });
                                }
                            }
                        }
                    }

                    callback(null, null);
                }
            ],
            function (err, res) {
                if (!err) {
                    log.info("Send via wechat template message, DONE!");
                }
            });
    };


    static updateParticipantLastFetchTime(sessionId, userId, score) {
        score = score + 1000;
        let participantsKey = RedisModel.makeRedisKey(REDIS_KEYS.SessionParticipants, sessionId);
        redisConn.zaddAsync(participantsKey, score, userId)
            .then(function (res) {
                ParticipantRepo.updateLastFetchTime(new Date(score), sessionId, userId, function (err, res) {
                    if (err) {
                        log.error("Update participant last fetch time failed: ", err);
                    }
                });
            })
            .catch(function (err) {
                log.error("Update participant last fetch time failed: ", err);
            });
    }
}

module.exports = WechatClient;