/**
 * 患者模型。
 */
"use strict";

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

let BaseModel = require('./base.model');

let patientRepo = require('../repository/patient.repo');
let statsRepo = require("../repository/stats.msg.repo.js");
let pmRepo = require('../repository/private.msg.repo');

let objectUtil = require("../util/objectUtil.js");
let modelUtil = require('../util/modelUtil');

let Doctor = require('../models/doctor');

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

let clientCache = require('./socket.io/client.cache').clientCache();

let doctorRepo = require('../repository/doctor.repo');
let groupRepo = require('../repository/group.repo');
let wechatUtil = require('../util/wechatUtil');

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

    /**
     * 是否为患者代码。
     *
     * @param code
     * @param passedCallback 测试通过回调
     * @param failedCallback 测试失败回调
     */
    static isPatientCode(code, passedCallback, failedCallback) {
        patientRepo.isPatientCode(code, function (err, result) {
            if (err) {
                log.error('Send message to patient failed: ', err);
                return;
            }

            if (result[0].c > 0) {
                passedCallback();
            } else {
                failedCallback();
            }
        });
    }

    /**
     * 向患者发送消息。
     *
     * 注意：患者消息的保存发送与医生的实现不同。
     *
     * @param message 消息
     */
    sendMessage(message) {
        // 保存消息
        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;
            }

            // 结束网络连接，后续操作继续执行
            pmRepo.findOnePatientMessage(result.insertId, function (err, msg) {
                if (err) {
                    modelUtil.emitDbError(self.eventEmitter, 'Save private message success, but return last message failed', err);
                    return;
                }

                modelUtil.emitData(self.eventEmitter, Doctor.fillMessages(msg));

                // 通过Web Socket推送给患者
                let patientClient = clientCache.findById(message.to);
                if (!patientClient) {
                    log.warn("User is not online, user id: ", message.to);
                    //发送微信模板消息
                    self.sendConsultWechatReplyTempMsg(message);
                    return;
                }
                let row = msg[0];
                row.timestamp = objectUtil.timestampToLong(row.timestamp);
                patientClient.socketServer.sockets.emit('message', row);
            });

            // 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);
            });
        });
    };

    /**
     * 推送群组消息给居民
     *
     * @param message
     */
    pushGroupMessage(message) {
        let self = this;
        // 通过Web Socket推送给患者
        let patientClient = clientCache.findById(message.to);
        if (!patientClient) {
            log.warn("User is not online, user id: ", message.to);
            //发送微信模板消息
            self.sendConsultWechatReplyTempMsg(message);
            return;
        }
        groupRepo.getOnGroupMsg(message.msgId, function (err, result) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, "get group msg info failed", err);
            }

            var msg = result ? result[0] : "";

            if (msg) {
                patientClient.socketServer.sockets.emit('message', msg);
            }
        })
    };

    /**
     * 发送微信模板消息给居民
     *
     * @param message
     */
    sendConsultWechatReplyTempMsg(message) {
        let selt = this;

        // 发送微信消息
        function sendWxMessage(openid, name, consult) {
            var replyContent = message.content;

            switch (Number.parseInt(message.contentType)) {
                case CONTENT_TYPES.Image:
                    replyContent = "[图片]";
                    break;
                case CONTENT_TYPES.Audio:
                    replyContent = "[语音]";
                    break;
                case 0:
                case CONTENT_TYPES.Article:
                case CONTENT_TYPES.GoTo:
                case CONTENT_TYPES.SessionBegin:
                case CONTENT_TYPES.SessionEnd:
                    return;
                default:
                    break;
            }


            // 模板消息数据
            var msg = {
                touser: openid,
                template_id: config.wechatConfig.template.consultTemplate,
                url: config.wechatConfig.baseUrl + "/wx/html/yszx/html/consulting-doctor.html?openid=" + openid +
                "&consult=" + consult.consult + "&toUser=" + message.to,
                data: {
                    first: {value: "您的健康咨询有新的回复", color: "#000000"}
                    , remark: {value: "", color: "#000000"}
                    , keyword1: {value: consult.symptoms, color: "#000000"}
                    , keyword2: {value: replyContent, color: "#000000"}
                    , keyword3: {value: name, color: "#000000"}
                }
            };

            // 发送模板消息
            wechatUtil.sendWxTemplateMessage(msg);
        }

        // 查询居民openid
        patientRepo.getPatientOpenid(message.to, function (err, result) {
            if (err) {
                modelUtil.emitDbError(self.eventEmitter, "get patient openid failed", err);
                return;
            }

            var openid = result && result.length > 0 ? result[0].openid : "";

            if (openid) {
                // 查询医生信息
                doctorRepo.getDoctorInfo(message.from, function (err, result) {
                    if (err) {
                        modelUtil.emitDbError(self.eventEmitter, "get doctor info failed", err);
                        return;
                    }
                    if (result && result.length > 0) {
                        var name = result[0].name;

                        if (message.group) {
                            groupRepo.getGroupConsultInfo(message.group, function (err, result) {
                                if (err) {
                                    modelUtil.emitDbError(self.eventEmitter, "get patient and doctor consult info failed", err);
                                    return;
                                }

                                var consult = result && result.length > 0 ? result[0] : "";

                                if (consult) {
                                    sendWxMessage(openid, name, consult);
                                }
                            });
                        } else {
                            // 查询医生与居民对应的咨询信息
                            patientRepo.getPatientDoctorConsult(message.to, message.from, function (err, result) {
                                if (err) {
                                    modelUtil.emitDbError(self.eventEmitter, "get patient and doctor consult info failed", err);
                                    return;
                                }

                                var consult = result && result.length > 0 ? result[0] : "";

                                if (consult) {
                                    sendWxMessage(openid, name, consult);
                                }
                            });
                        }
                    } else {
                        modelUtil.emitDbError(self.eventEmitter, "can not find doctor info", err);
                    }
                });
            } else {
                modelUtil.logError("patient does not bind wechat", err);
            }
        });
    };
}

module.exports = Patient;