/**
 * 搜索功能。
 */
"use strict";

let ImDb = require('../mysql/db/im.db');
let log = require('../../util/log.js');
const IMTABLE = require('../../include/commons').IM_DB;
class MessageRepo {
    constructor() {
    }
    /**
     * 根据sessionId获取对应的会话的信息列表mysql
     * @param sessionId
     */
    static getMessagesBySession(sessionId,handler){
        let session = new  Sessions();
        session.getSessions(sessionId,function(err,res){
            if(err){
                return;
            }else{
                if(res.length==0){
                    log.warn("session is not found!");
                    return;
                }
                let type = res[0].type;
                let db ="";
                if(type==1){
                    db = IMTABLE.MUCMSG;
                }else if(type==2){
                    db = IMTABLE.P2PMSG;
                }else{
                    db = IMTABLE.GROUPMSG;
                }
                let sql = "select * from "+db+" w where w.session_id = ? limit 0,"+config.sessionConfig.maxMessageCount;
                imDb.execQuery({
                    "sql": sessionsql,
                    "args": [sessionId],
                    "handler": function (err, res) {
                        if(err) {
                            log.error("sql:"+sql+"data:sessionId："+sessionId);
                        }else{
                            log.info("getMessagesBySession success by sessionId :"+sessionId);
                        }
                        handler(err,res);
                    }
                })
            }
        })

    }

    /**
     * 分页获取消息MySQL
     * @param sessionId
     * @param page
     * @param pagesize
     */
    static getMessageByPage(sessionId,page,pagesize,handler){
        if(page>0){
            page =page*pagesize;
        }
        let session = new  Sessions();
        session.getSessions(sessionId,function(err,res){
            if(err){
                return;
            }else{
                if(res.length==0){
                    log.warn("session is not found!");
                    return;
                }
                let type = res[0].type;
                let db ="";
                if(type==1){
                    db = IMTABLE.MUCMSG;
                }else if(type==2){
                    db = IMTABLE.P2PMSG;
                }else{
                    db = IMTABLE.GROUPMSG;
                }
                let sql = "select * from "+db+" w where w.session_id = ? limit ?,?";
                imDb.execQuery({
                    "sql": sessionsql,
                    "args": [sessionId,page,pagesize],
                    "handler": function (err, res) {
                        if(err) {
                            log.error("sql:"+sql+"data:sessionId："+sessionId);
                        }else{
                            log.info("getMessagesBySession success by sessionId :"+sessionId);
                        }
                        handler(err,res);
                    }
                })
            }
        })
    }

    /**
     * 保存Message 到mysql
     * @param messages 消息对象
     * @type type 会话类型，1表示MUC会话，2表示P2P，3表示群会话，4表示临时讨论组
     */
    static saveMessageForMysql(messages,type,messageid,sessionId){
        var sql = "INSERT INTO "+(type==1?IMTABLE.MUCMSG:type==2?IMTABLE.P2PMSG:IMTABLE.GROUPMSG)+" (id, session_id, sender_id, sender_name,content_type, content, timestamp) VALUES (?,?,?,?,?,?,?) ";
        imDb.execQuery({
            "sql": sql,
            "args": [messageid,sessionId,messages.senderId,messages.senderName,messages.contentType,messages.content,messages.timestamp],
            "handler": function (err, res) {
                if(err) {
                    log.error("sql:"+sql+",error:"+err+",data:"+JSON.stringify(messages)+",messageid:"+messageid+",sessionId:"+sessionId);
                }else{
                    log.info("save message to mysql is success by session :"+sessionId);
                }
            }
        });

    }

}

module.exports = MessageRepo;