// const { MongoClient } = require('mongodb');
var express = require('express');
var router = express.Router();
const querystring = require('querystring');

var us = {
    mongo: require('mongodb'),
    client: null // 用于存储 MongoClient 实例
};

// 初始化 MongoDB 连接
us.initMongoConnection = async function (host, database) {
    if (!us.client) {
        const url = host; // MongoDB 连接地址
        us.client = new us.mongo.MongoClient(url, {
            useNewUrlParser: true,
            useUnifiedTopology: true,
            maxPoolSize: 10000, // 设置连接池没有上限
            serverSelectionTimeoutMS: 5000, // 服务器选择超时
            socketTimeoutMS: 45000 // 套接字超时
        });
        try {
            await us.client.connect();
        } catch (err) {
            console.error("MongoDB 连接失败", err);
            throw err; // 抛出错误以便调用者处理
        }
    }
    return us.client.db(database); // 返回数据库实例
}

async function updateUserData(host, database, cename, data, res) {
    const db = await us.initMongoConnection(host, database); // 连接数据库
    try {
        const collection = db.collection(cename); // collection设置
        const dateKey = Object.keys(data)[0]; // 获取日期键
        const username = Object.keys(data[dateKey])[0]; // 获取用户ID
        console.log(`更新用户数据：${username}`);
        // 使用 upsert 更新或插入文档
        await collection.updateOne(
            { [dateKey]: { $exists: true } }, // 查询条件, [`${dateKey}.${username}`]: { $exists: true } 
            {
                $push: { [`${dateKey}.${username}`]: data[dateKey][username] }, // 将用户数据推入数组
            },
            { upsert: true } // 如果没有数据，默认创建一条数据
        );
        console.log('数据更新成功');
        res.end(JSON.stringify({ status: "1" }))
    } catch (err) {
        res.end(JSON.stringify({ status: "0" }))
        console.error('更新失败', err);
    }
}

async function updateUserData2(host, database, cename, data, res) {
    const db = await us.initMongoConnection(host, database); // 连接数据库
    try {
        const collection = db.collection(cename); // collection设置
        const dateKey = Object.keys(data)[0]; // 获取日期键
        const userid = Object.keys(data[dateKey])[0];
        const userData = data[dateKey][userid]; // 从 data 中提取 userData
        console.log(userData);

        // 使用 upsert 更新或插入文档
        await collection.updateOne(
            { [dateKey]: { $exists: true } },
            {
                $set: { // 设置其他字段
                    [`${dateKey}.${userid}`]: {
                        username: userData.username,
                        org: userData.org,
                        school: userData.school,
                        browser: userData.browser
                    }
                },
                // 先更新用户信息
            },
            { upsert: true } // 如果没有数据，默认创建一条数据
        );

        // 然后推送操作到 operation 数组
        await collection.updateOne(
            { [dateKey]: { $exists: true } },
            {
                $push: { [`${dateKey}.${userid}.operation`]: userData.operation } // 将用户数据推入数组
            }
        );

        console.log('数据更新成功');
        res.end(JSON.stringify({ status: "1" }))
    } catch (err) {
        res.end(JSON.stringify({ status: "0", error: err.message })) // 返回错误信息
        console.error('更新失败', err);
    }
}




/*
{
    "2025-04-01": {
        "userid": {
            username: "",
            org: "",
            school: "",
            browser: "",
            operation:[
                {
                    "useTime":"",
                    "loadTime":"",
                    "object":"",
                    "status":"error(报错信息)、正常就是success"
                }
            ]
    }
}
// 示例调用
updateUserData("mongodb://root:usestudio-1@123.58.32.151:11641?authSource=admin", "cocolog", "applog", {
    "2025-04-01": {
        "userid": {
            username: "",
            org: "",
            school: "",
            browser: "",
            operation: [
                {
                    "useTime": "",
                    "loadTime": "",
                    "object": "",
                    "status": "error(报错信息)、正常就是success"
                }
            ]
        }
    }
});
*/

router.route('/updateUserData2').all((req, res, next) => {
    let today = new Date();
    let date = today.getFullYear() + '-' + (today.getMonth() + 1).toString().padStart(2, '0') + '-' + today.getDate().toString().padStart(2, '0');
    let data = req.body[0];
    let decryptedData = {};
    for (let key in data) {
        decryptedData[key] = decodeURIComponent(data[key]);
    }
    updateUserData2("mongodb://root:usestudio-1@172.16.9.240:27017?authSource=admin", "cocolog", "applog", {
        [date]: {
            [decryptedData.userid]: 
            {
                userid: decryptedData.username,
                accountNumber: decryptedData.accountNumber,
                org: decryptedData.org,
                school: decryptedData.school,
                browser: decryptedData.browser,
                operation: [
                    {
                        useTime: decryptedData.userTime,
                        loadTime: decryptedData.loadTime,
                        object: decryptedData.object,
                        status: decryptedData.status,
                    }
                ]
            }
        }
    }, res);
});

router.route('/updateUserData').all((req, res, next) => {
    let today = new Date();
    let date = today.getFullYear() + '-' + (today.getMonth() + 1).toString().padStart(2, '0') + '-' + today.getDate().toString().padStart(2, '0');
    let data = req.body[0];
    let decryptedData = {};
    for (let key in data) {
        decryptedData[key] = decodeURIComponent(data[key]);
    }
    updateUserData("mongodb://root:usestudio-1@172.16.9.240:27017?authSource=admin", "cocolog", "applog", {
        [date]: {
            [decryptedData.username]: // 使用变量username作为键
            {
                userid: decryptedData.userid,
                accountNumber: decryptedData.accountNumber,
                date: today,
                appname: decryptedData.appname,
                appid: decryptedData.appid,
                status: decryptedData.status
            }
        }
    }, res);
});


queryString = function (url) {
    var a = url.split("?");
    var json = querystring.parse(a[1])
    return json;
}


module.exports = router;