im/src/doctor/models/doctor.js

/**
 * 医生模型。
 */
"use strict";

let log = require("../util/log.js");
let getui = require('getui');

let BaseModel = require('./base.model');
let doctorRepo = require('../repository/doctor.repo.js');
let gmRepo = require('../repository/group.msg.repo');
let pmRepo = require('../repository/private.msg.repo');
let nmRepo = require("../repository/notify.msg.repo");
let smRepo = require("../repository/system.msg.repo.js");
let statsRepo = require("../repository/stats.msg.repo");
let objectUtil = require("../util/objectUtil.js");
let modelUtil = require('../util/modelUtil');

const CONTENT_TYPES = require('../include/commons').CONTENT_TYPE;
const PLATFORMS = require('../include/commons').PLATFORM;

class Doctor extends BaseModel {
    constructor() {
        super();
    }

    /**
     * 向医生发送消息。
     *
     * @param message
     */
    sendMessage(message) {
        let self = this;
        let tempContent = message.contentType === CONTENT_TYPES.Article ? JSON.stringify(message.content) : message.content;

        pmRepo.save(message.to, message.from, message.contentType, tempContent, function (err, result) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, 'Save private message failed', err);
                return;
            }

            // 返回新插入的消息数据，并推送
            pmRepo.findOneMessage(result.insertId, function (err, msg) {
                if (err) {
                    modelUtil.emitDbError(self.eventEmitter, 'Save private message success, but return last message failed', err);
                    return;
                }

                // 先结束网络连接，再推送给客户端
                modelUtil.emitData(self.eventEmitter, Doctor.fillMessages(msg));

                Doctor.pushMessage(message, 'p2p_msg');
            });

            // 更新自身的聊天统计信息
            statsRepo.updatePrivateChatSummary(message.from, message.to, message.from, message.contentType, message.content, function (err, result) {
                if (err) log.error(err);
            });

            // 更新对端的聊天统计信息
            statsRepo.updatePrivateChatSummary(message.to, message.from, message.from, message.contentType, message.content, function (err, result) {
                if (err) log.error(err);
            });
        });
    }

    /**
     * 向医生发送系统消息。
     *
     * @param message
     */
    sendSystemMessage(message) {
        let self = this;
        smRepo.save(message.to,
            message.contentType,
            message.title,
            message.summary,
            message.content,
            function (err, result) {
                if (err) {
                    modelUtil.emitDbError(self.eventEmitter, "Save system message failed", err);
                    return;
                }

                // 先结束网络连接，再推送给客户端
                modelUtil.emitData(self.eventEmitter, {});

                Doctor.pushMessage(message, 'system_msg');
            });
    }

    /**
     * 推送消息。
     *
     * @param message
     * @param channel
     */
    static pushMessage(message, channel){
        doctorRepo.getUserStatus(message.to, function (err, result) {
            if (err) {
                log.error('Lookup notify message receiver failed: ' + message.to);
                return;
            }

            if (result.length == 0) {
                log.warn('Notify message receiver is not found: ', message.to);
                return;
            }

            let userStatus = result[0];
            let isOnline = result.length > 0 && userStatus.is_online === 1;

            // 构建通知消息
            let notifyMessage = {type: channel, data: message.content};
            if(message.from) notifyMessage.from_uid = message.from;
            if(message.gid) notifyMessage.gid = message.gid;

            let title = '新消息';
            let content = message.content;
            if (message.contentType === CONTENT_TYPES.Image) {
                content = '[图片]';
            } else if (message.contentType === CONTENT_TYPES.Audio) {
                content = '[语音]';
            } else if(message.contentType > 3) {
                content = '您有一条新消息';
            }

            // 保存通知消息到数据库中，并根据用户在线状态推送此消息
            nmRepo.save(message.to, message.contentType, title, content, JSON.stringify(notifyMessage), isOnline, function (err, result) {
                if (err) {
                    log.error('Save notify message failed, ', err);
                    return;
                }

                if (!isOnline) return;

                Doctor.pushToClient(message.to, userStatus.clientId, userStatus.status, userStatus.token, message.contentType,
                    title, content, notifyMessage, userStatus.platform, function (err, result) {
                        if (err != null) {
                            console.log(err);
                        } else {
                            console.log(result);
                        }
                    });
            });
        });
    }

    /**
     * 推送消息给医生客户端。
     *
     * @param userId            用户ID
     * @param clientId          客户端设备ID
     * @param appStatus         客户端App状态
     * @param token
     * @param contentType
     * @param title
     * @param content
     * @param notifyMessage
     * @param platform
     * @param handler
     */
    static pushToClient(userId, clientId, appStatus, token, contentType, title, content, notifyMessage, platform, handler) {
        if (platform === PLATFORMS.iOS) {
            getui.pushAPN(userId, token, contentType, title, content, notifyMessage, handler);
        } else if (platform === PLATFORMS.Android) {
            getui.pushAndroid(clientId, contentType, title, content, notifyMessage, appStatus, handler);
        }
    }

    /**
     * 获取最近聊天的用户，组。
     */
    getRecentChatList() {
        let self = this;
        statsRepo.getRecentChats(userId, days, function (err, rows) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, 'Get recent chat objects failed', err);
                return;
            }

            let data = {patients: [], doctors: [], groups: []};
            if (rows.length > 0) {
                for (let i = 0; i < rows.length; ++i) {
                    let row = rows[i];
                    if (row.type.indexOf('patient') > -1) {
                        data.patients.push({
                            code: row.code,
                            name: row.name,
                            birthday: row.birthday === null ? "" : row.birthday,
                            sex: row.sex,
                            avatar: row.photo === null ? "" : row.photo
                        });
                    } else if (row.type.indexOf('doctor') > -1) {
                        data.doctors.push({
                            code: row.code,
                            name: row.name,
                            birthday: row.birthday === null ? "" : row.birthday,
                            sex: row.sex,
                            avatar: row.photo === null ? "" : row.photo
                        });
                    } else if (row.type.indexOf('group') > -1) {
                        data.groups.push({
                            code: row.code,
                            name: row.name
                        });
                    }
                }
            }

            modelUtil.emitData(self.eventEmitter, data);
        });
    }

    /**
     * 获取参与的聊天列表，包括：点对点，参与的讨论组，系统消息等。
     *
     * @param userId
     */
    getChatList(userId) {
        let self = this;

        // 与患者的私信
        pmRepo.findAllP2PWithPatient(userId, function (err, patients) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, 'Get chat list with patient failed', err);
                return;
            }

            let chats = {patients: [], doctors: [], groups: []};
            for (let i = 0; i < patients.length; i++) {
                let patient = patients[i];
                chats.patients.push({
                    code: patient.code,
                    name: patient.name,
                    birthday: patient.birthday,
                    sex: patient.sex,
                    avatar: patient.photo == null ? "" : patient.photo,
                    newMessageCount: patient.new_msg_count,
                    lastContentType: patient.last_content_type,
                    lastContent: patient.last_content,
                    timestamp: objectUtil.timestampToLong(patient.timestamp)
                });
            }

            // 含有患者的群
            gmRepo.findAllGroupsWithPatient(userId, function (err, groups) {
                if (err) {
                    modelUtil.emitDbError(self.eventEmitter, 'Get group list with patient failed', err);
                    return;
                }

                for (let i = 0; i < groups.length; i++) {
                    let group = groups[i];

                    // 过滤掉医生间的求助团队
                    if (group.group_type === 2) continue;

                    chats.groups.push({
                        code: group.code,
                        name: group.name,
                        groupType: group.msg_type,
                        newMessageCount: group.new_msg_count,
                        lastContentType: group.last_content_type,
                        lastContent: group.last_content,
                        timestamp: objectUtil.timestampToLong(group.timestamp)
                    });
                }

                // 医生间的私聊
                pmRepo.findAllP2PWithDoctor(userId, function (err, doctors) {
                    if (err) {
                        modelUtil.emitDbError(self.eventEmitter, 'Get chat list with doctor failed', err);
                        return;
                    }

                    for (let i = 0; i < doctors.length; i++) {
                        let doctor = doctors[i];
                        chats.doctors.push({
                            code: doctor.code,
                            name: doctor.name,
                            sex: doctor.sex,
                            avatar: doctor.photo === null ? "" : doctor.photo,
                            newMessageCount: doctor.new_msg_count,
                            lastContentType: doctor.last_content_type,
                            lastContent: doctor.last_content,
                            timestamp: objectUtil.timestampToLong(doctor.timestamp)
                        });
                    }

                    // 获取医生间的组
                    gmRepo.findAllGroupsWithDoctor(userId, function (err, groups) {
                        if (err) {
                            modelUtil.emitDbError(self.eventEmitter, 'Get group list with doctor failed', err);
                            return;
                        }

                        for (let i = 0; i < groups.length; i++) {
                            let group = groups[i];
                            chats.groups.push({
                                code: group.code,
                                name: group.name,
                                groupType: group.group_type, // 行政团队 or 求助
                                newMessageCount: group.new_msg_count,
                                lastContentType: group.last_content_type,
                                lastContent: group.last_content,
                                timestamp: objectUtil.timestampToLong(group.timestamp)
                            });
                        }

                        modelUtil.emitData(self.eventEmitter, chats);
                    });
                });
            })
        });
    }

    /**
     * 获取与患者的聊天列表。
     */
    getChatsListWithPatient(userId) {
        let self = this;

        pmRepo.findAllP2PWithPatient(userId, function (err, patients) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, 'Get chat list with patient failed', err);
                return;
            }

            let chats = {patients: [], groups: []};
            for (let i = 0; i < patients.length; i++) {
                let patient = patients[i];
                chats.patients.push({
                    code: patient.code,
                    name: patient.name,
                    birthday: patient.birthday,
                    sex: patient.sex,
                    avatar: patient.photo == null ? "" : patient.photo,
                    newMessageCount: patient.new_msg_count,
                    lastContentType: patient.last_content_type,
                    lastContent: patient.last_content,
                    timestamp: objectUtil.timestampToLong(patient.timestamp)
                });
            }

            gmRepo.findAllGroupsWithPatient(userId, function (err, groups) {
                if (err) {
                    modelUtil.emitDbError(self.eventEmitter, 'Get group list with patient failed', err);
                    return;
                }

                for (let i = 0; i < groups.length; i++) {
                    let group = groups[i];

                    // 过滤掉医生间的求助团队
                    if (group.group_type === 2) continue;

                    chats.groups.push({
                        code: group.code,
                        name: group.name,
                        groupType: group.msg_type,
                        newMessageCount: group.new_msg_count,
                        lastContentType: group.last_content_type,
                        lastContent: group.last_content,
                        timestamp: objectUtil.timestampToLong(group.timestamp)
                    });
                }

                modelUtil.emitData(self.eventEmitter, chats);
            })
        });
    }

    /**
     * 获取与医生的聊天列表，包括：点对点，参与的讨论组。
     *
     * @param userId
     */
    getChatListWithDoctor(userId) {
        let self = this;

        // 先获取医生间的私聊
        pmRepo.findAllP2PWithDoctor(userId, function (err, doctors) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, 'Get chat list with doctor failed', err);
                return;
            }

            let chats = {doctors: [], groups: []};
            for (let i = 0; i < doctors.length; i++) {
                let doctor = doctors[i];
                chats.doctors.push({
                    code: doctor.code,
                    name: doctor.name,
                    sex: doctor.sex,
                    avatar: doctor.photo === null ? "" : doctor.photo,
                    newMessageCount: doctor.new_msg_count,
                    lastContentType: doctor.last_content_type,
                    lastContent: doctor.last_content,
                    timestamp: objectUtil.timestampToLong(doctor.timestamp)
                });
            }

            // 再获取医生间的组
            gmRepo.findAllGroupsWithDoctor(userId, function (err, groups) {
                if (err) {
                    modelUtil.emitDbError(self.eventEmitter, 'Get group list with doctor failed', err);
                    return;
                }

                for (let i = 0; i < groups.length; i++) {
                    let group = groups[i];
                    chats.groups.push({
                        code: group.code,
                        name: group.name,
                        groupType: group.group_type, // 行政团队 or 求助
                        newMessageCount: group.new_msg_count,
                        lastContentType: group.last_content_type,
                        lastContent: group.last_content,
                        timestamp: objectUtil.timestampToLong(group.timestamp)
                    });
                }

                modelUtil.emitData(self.eventEmitter, chats);
            });
        });
    }

    /**
     * 获取与指定用户的聊天记录。
     *
     * @param userId
     * @param peerId
     * @param contentType
     * @param msgStartId
     * @param msgEndId
     * @param count
     * @param closedInterval
     */
    getPrivateMessages(userId, peerId, contentType, msgStartId, msgEndId, count, closedInterval) {
        let self = this;

        pmRepo.findAllMessages(userId, peerId, contentType === undefined ? "1,2,3,5,6" : contentType, msgStartId, msgEndId, count, closedInterval, function (err, rows) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, 'Get private message failed', err);
                return;
            }

            let messages = self.fillMessages(rows);
            modelUtil.emitData(self.eventEmitter, messages);

            // 清空统计信息
            statsRepo.clearPrivateChatSummary(userId, peerId, function (err, result) {
                if (err) console.log(err);
            });
        });
    }

    /**
     * 获取与某人聊天的未读消息数。
     *
     * @param userId
     * @param peerId
     */
    getUnreadMessageCount(userId, peerId) {
        let self = this;

        statsRepo.getPrivateChatAllUnReadCount(userId, function (err, result) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, "Get unread private message count failed", err);
                return;
            }

            let data = {userId: userId, messageType: 1, newMessageCount: 0};
            for (let i = 0; i < result.length; i++) {
                data.newMessageCount += result[i].new_msg_count;
            }

            modelUtil.emitData(self.eventEmitter, data);
        });
    }

    /**
     * 获取所有未读的消息数，包括群。
     *
     * @param userId
     */
    getAllUnreadMessageCount(userId) {
        let self = this;

        statsRepo.getChatAllUnReadCount(userId, function (err, result) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, "Get all unread message count failed", err);
                return;
            }

            let data = {userId: userId, messageType: 0, newMessageCount: 0};
            for (let index = 0; index < result.length; index++) {
                data.newMessageCount += result[index].new_msg_count;
            }

            modelUtil.emitData(self.eventEmitter, data);
        });
    }

    /**
     * 获取与指定用户的未读聊天记录。
     *
     * @param userId
     * @param peerId
     */
    getUnreadPrivateMessages(userId, peerId) {
        let self = this;
        statsRepo.getPrivateChatSummary(userId, peerId, function (err, summary) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, 'Get unread private messages failed', err);
                return;
            }

            // 没有未读消息，直接返回
            if (summary.length == 0 || summary[0].new_msg_count === 0) {
                modelUtil.emitData(self.eventEmitter, {startId: 0, count: 0, records: []});
                return;
            }

            pmRepo.findUnread(peerId, userId, MAX_INT, summary[0].new_msg_count, function (err, rows) {
                if (err) {
                    modelUtil.emitDbError(self.eventEmitter, "Get unread private messages failed", err);
                    return;
                }

                let messages = self.fillMessages(rows);
                modelUtil.emitData(self.eventEmitter, messages);
            });
        });
    }

    /**
     * 获取聊天统计摘要。
     *
     * @param userId
     * @param peerId
     */
    getChatSummary(userId, peerId) {
        let self = this;
        statsRepo.getPrivateChatSummary(userId, peerId, function (err, result) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, "Get private messages statistic failed", err);
                return;
            }

            let data = {
                userId: userId,
                peerId: peerId,
                lastCContentType: 1,
                lastContent: "",
                newMessageCount: 0,
                timestamp: 0
            };

            if (result.length > 0) {
                let row = result[0];

                data.userId = row.uid;
                data.peerId = row.from_uid;
                data.lastContentType = row.last_content_type;
                data.lastContent = row.last_content;
                data.newMessageCount = row.new_msg_count;
                data.timestamp = objectUtil.timestampToLong(row.timestamp)
            }

            modelUtil.emitData(self.eventEmitter, data);
        });
    }

    getMessage(messageId, messageType) {
        let self = this;

        if (messageType == 1) {
            // 私信
            pmRepo.findOneMessage(messageId, function (err, result) {
                if (err) {
                    modelUtil.emitDbError(self.eventEmitter, "Get message failed", err);
                    return;
                }

                if (result.length == 0) {
                    modelUtil.emitDataNotFound(self.eventEmitter, "Message not found.");
                    return;
                }

                modelUtil.emitData(self.eventEmitter, {
                    id: result[0].msg_id,
                    from: result[0].from_uid,
                    to: result[0].to_uid,
                    contentType: result[0].type,
                    content: result[0].content,
                    timestamp: objectUtil.timestampToLong(result[0].timestamp)
                });
            })
        } else {
            // 群信
            gmRepo.findOneMessage(messageId, function (err, result) {
                if (err) {
                    modelUtil.emitDbError(self.eventEmitter, "Get message failed", err);
                    return;
                }

                if (result.length == 0) {
                    modelUtil.emitDataNotFound(self.eventEmitter, "Message not found.");
                    return;
                }

                modelUtil.emitData(self.eventEmitter, {
                    id: result[0].msg_id,
                    from: result[0].from_uid,
                    at: result[0].at_uid,
                    groupId: result[0].to_gid,
                    contentType: result[0].type,
                    content: result[0].content,
                    timestamp: objectUtil.timestampToLong(result[0].timestamp)
                });
            });
        }
    }

    /**
     * 判断与患者的最新咨询会话是否已经结束。
     */
    isConsultFinished(doctorId, patientId) {
        let self = this;

        pmRepo.isCurrentSessionFinished(doctorId, patientId, function (err, result) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, "Get session finish status failed: ", err);
                return;
            }

            let data = {finished: true, consultId: ''};
            if (result.length > 0) {
                let finishRow = result[0];

                data.finished = finishRow.finished === 1;
                if (!data.finished) {
                    data.consultId = finishRow.consult_id;
                }
            }

            modelUtil.emitData(self.eventEmitter, data);
        })
    }

    /**
     * 将消息的返回结果合并成JSON。
     *
     * @param rows
     *
     * @returns {startId: 0, count: 0, records: []}
     */
    static fillMessages(rows) {
        let messages = {startId: rows.length > 0 ? rows[0].msg_id : '', count: rows.length, records: []};
        for (let i = 0; i < rows.length; i++) {
            let row = rows[i];
            let record = {
                id: row.msg_id,
                from: row.from_uid,
                contentType: row.type,
                content: row.content,
                timestamp: objectUtil.timestampToLong(row.timestamp)
            };

            if (row.to_uid !== undefined) record.to = row.to_uid;
            if (row.at_uid !== undefined) record.at = row.at_uid;

            messages.records.push(record);
        }

        return messages;
    }
}

// Expose class
module.exports = Doctor;