/**
 * 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
        });
    }

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

        ImDb.execQuery({
            sql: sql,
            args: [topicId],
            handler: handler
        });
    }

    /**
     * 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
        });
    }

    /**
     * 获取会话中的议题。
     *
     * @param sessionId
     * @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
        });
    }

    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
        });


    }



    /**
     * 保存议题
     *
     * @param topicName
     * @param topicId
     * @param sessionId
     * @param messageId
     * @param date
     * @param description
     * @param status
     */
    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
     */
    static updateTopics(topicId, jsonValue,handler) {
        var values = [];
        let sql = "update topics set ";
        var key =[];
        for(var 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": function (err, res) {
                if (err) {
                    log.error("updateTopis is fail error: " + err);
                } else {
                    log.info("updateTopis is success");
                    if(handler){
                        handler(err,res);
                    }
                }
            }
        });
    }
}

module.exports = TopicRepo;