/**
 * 搜索功能。
 */
"use strict";

let ImDb = require('../mysql/db/im.db');
let log = require('../../util/log.js');

const DB_TABLES = require('../../include/commons').DB_TABLES;

class TopicRepo {
    constructor() {
    }

    /**
     * 查找议题.
     *
     * @param topicId
     * @param handler
     */
    static findOne(topicId, handler) {
        let sql = "select id, session_id, name, create_time, end_by, end_time," +
            " start_message_id, end_message_id, description, status from " + DB_TABLES.Topics + " where id = ?";

        ImDb.execQuery({
            sql: sql,
            args: [topicId],
            handler: handler || function (err, res) {
                if (err) log.error(err);
            }
        });
    }

    static findLastTopicStatus(sessionId, handler) {
        let sql = "select id from " + DB_TABLES.Topics + " where  session_id = ? order by create_time desc limit 0, 1";
        ImDb.execQuery({
            sql: sql,
            args: [sessionId],
            handler: function (err, res) {
                if (res.length == 0) {
                    handler(null, null);
                } else {
                    TopicRepo.findTopicStatus(res[0].id, handler);
                }
            }
        });
    }

    static findLastBySessionId(sessionId, handler) {
        let sql = "select * from " + DB_TABLES.Topics + " where  session_id = ? order by create_time desc limit 0, 1";
        ImDb.execQuery({
            sql: sql,
            args: [sessionId],
            handler: function (err, res) {
                handler(err, res);
            }
        });
    }



    static findTopicStatus(topicId, handler) {
        let sql = "select id, name, description, status from " + DB_TABLES.Topics + " where id = ?";

        ImDb.execQuery({
            sql: sql,
            args: [topicId],
            handler: handler || function (err, res) {
                if (err) log.error(err);
            }
        });
    }

    /**
     * 获取会话中的议题。
     *
     * @param sessionId
     * @param handler
     */
    static findAllBySessionId(sessionId, handler) {
        let sql = "select id, session_id, name, create_time, end_by, end_time," +
            " start_message_id, end_message_id, description, status from " + DB_TABLES.Topics + " where session_id = ? order by id";

        ImDb.execQuery({
            sql: sql,
            args: [sessionId],
            handler: handler || function (err, res) {
                if (err) log.error(err);
            }
        });
    }

    /**
     * 获取会话中的议题。
     *
     * @param id
     * @param handler
     */
    static findAllByTopicId(id, handler) {
        let sql = "select id, session_id, name, create_time, end_by, end_time," +
            " start_message_id, end_message_id, description, status from " + DB_TABLES.Topics + " where id = ? order by id";

        ImDb.execQuery({
            sql: sql,
            args: [id],
            handler: handler || function (err, res) {
                if (err) log.error(err);
            }
        });
    }

    static findAllBySessionIdsAndStatus(sessionIds, status, page, pagesize, handler) {
        let sql = "select id, session_id, name, create_time, end_by, end_time," +
            " start_message_id, end_message_id, description, status from " + DB_TABLES.Topics + " where session_id in ('" + sessionIds + "') and status in (" + status + ") order by status desc limit ?,? ";
        ImDb.execQuery({
            sql: sql,
            args: [page, pagesize],
            handler: handler || function (err, res) {
                if (err) log.error(err);
            }
        });
    }


    /**
     * 保存议题
     *
     * @param topicName
     * @param topicId
     * @param sessionId
     * @param messageId
     * @param date
     * @param description
     * @param status
     * @param handler
     */
    static saveTopic(topicName, topicId, sessionId, messageId, date, description, status, handler) {
        let sql = "insert into " + DB_TABLES.Topics + " (id,session_id,name,create_time,start_message_id,description,status) VALUES (?,?,?,?,?,?,?)";
        ImDb.execQuery({
            "sql": sql,
            "args": [topicId, sessionId, topicName, date, messageId, description, status],
            "handler": function (err, res) {
                handler(err, res);
            }
        });
    }

    /**
     * 结束议题
     *
     * @param topicId
     * @param endUser
     * @param date
     * @param messageId
     * @param status
     */
    static endTopic(topicId, endUser, date, messageId, status) {
        let sql = "update " + DB_TABLES.Topics + " set end_by = ?,end_time=?,end_message_id=?,status = ? where  id = ?";
        ImDb.execQuery({
            "sql": sql,
            "args": [endUser, date, messageId, status, topicId],
            "handler": function (err, res) {
                if (err) {
                    log.error("endTopic is fail error: " + err);
                } else {
                    log.info("endTopic is success");
                }
            }
        });
    }

    /**
     * 更新议题状态。
     *
     * @param topicId
     * @param jsonValue
     * @param handler
     */
    static updateTopics(topicId, jsonValue, handler) {
        let values = [];
        let sql = "UPDATE topics SET ";
        let key = [];
        for (let j in jsonValue) {
            key.push(j + " = ?");
            values.push(jsonValue[j]);
        }

        sql = sql + key.join(",");
        sql = sql + " WHERE id = ?";
        values.push(topicId);

        ImDb.execQuery({
            "sql": sql,
            "args": values,
            "handler": handler
        });
    }

    /**
     * 搜索最后回复时间超过指定时限的议题，此议题最后一条消息的回复者必须是医生，即医生发送消息后，患者未理睬的，关闭。
     *
     * @param timespan 时限，以小时计
     * @param handler
     */
    static findAllBySessionLastActiveTime(timespan, handler) {
        let sql = "SELECT s.id session_id, s.name session_name, s.create_date session_create_time, s.last_message_time, " +
            "t.id topic_id, t.name topic_name, t.create_time topic_create_time, t.start_message_id " +
            "FROM sessions s, wlyy_consults t " +
            "WHERE s.id = t.session_id  AND t.end_message_id IS NULL AND s.last_content_type in(1,2,3,4) and s.last_sender_id IN (SELECT id FROM doctors d where d.id<>t.patient) " +
            "AND UNIX_TIMESTAMP(now()) - UNIX_TIMESTAMP(s.last_message_time) > ? " +
            "ORDER BY t.create_time";

        ImDb.execQuery({
            sql: sql,
            args: [timespan * 3600],
            handler: handler
        });
    }
}

module.exports = TopicRepo;