/**
 * Created by zhang on 2019/4/12.
 */
module.exports = {
    saveOnlineTime:saveOnlineTime
};

let mongoose = require("mongoose");
const moment = require('moment');
let logs_model = mongoose.model("online_logs");
let user_model = mongoose.model("user");

async function saveOnlineTime(req) {
    let online_times = 0;
    let end = + new Date();
    try {
        let interval_time = 10 * 60 *1000;
        let start = req.session.online_start_time;
        if(start === undefined) return req.session.online_start_time ==end;
        let online_times =  end - start;
        //0.5秒内只记一次就好
        if(online_times < 500) return;//如果间隔太短，则忽略
        if(online_times > interval_time ){//如果间隔超过有效时长，则不累加这次时长，从头开始算
            req.session.online_start_time = end;
            return
        }
        if(!req.session.sessionUser||!req.session.sessionCompilation) return;
        //先设置session再更新，在多个服务器多请求的情况下，update完再设置回session可能会造成多算时间
        req.session.online_start_time = end;
        let dataString = moment(end).format('YYYY-MM-DD');
        let condition = {userID:req.session.sessionUser.id,compilationID:req.session.sessionCompilation._id,dateString:dataString};
        let userCondition = {_id: mongoose.Types.ObjectId(req.session.sessionUser.id)};
        let record = await logs_model.findOne(condition);
        if(record){ //如果找到，则累加
            await logs_model.update(condition,{$inc:{'online_times' : online_times }});
            await user_model.update(userCondition,{$inc:{'online_times' : online_times }});
        }else {//如果没找到，则新增一条记录
            condition["online_times"] = online_times;
            let today = moment(dataString).toDate();
            condition["dateTime"] = +today;
            await logs_model.create(condition);
            await user_model.update(userCondition,{'online_times' : online_times});
        }
    }catch (e){
        console.log("统计登录时间错误，online_times值："+online_times);
        console.log(e);
    }
    
}