// ROUTES FOR OUR APIselectClassStudent
// =============================================================================
const express = require("express");
const request = require("request");
const bcrypt = require("bcryptjs");
const router = express.Router(); // get an instance of the express Router
const querystring = require("querystring");
var mysql = require("./mysql");
// const _mysqlLabor = ["123.58.32.151", "pbl"]; //edu數據庫信息
// const _mysqluser = ["123.58.32.151", "cocorobouser"]; //用户数据库信息
// const _getmysqlLabor = ["123.58.32.151", "pbl"]; //edu數據庫信息
// const _getmysqluser = ["123.58.32.151", "cocorobouser"]; //edu數據庫信息
const _mysqlLabor = ["172.16.12.5", "pbl"]; //edu數據庫信息
const _mysqluser = ["172.16.12.5", "cocorobouser"]; //edu數據庫信息
// const _getmysqlLabor = ["172.16.12.5", "pbl"]; //edu數據庫信息
// const _getmysqluser = ["172.16.12.5", "cocorobouser"]; //edu數據庫信息
const _getmysqlLabor2 = ["172.16.12.7", "pbl"]; //edu數據庫信息
const _getmysqlLabor = ["172.16.12.7", "pbl"]; //edu數據庫信息
const _getmysqluser = ["172.16.12.7", "cocorobouser"]; //edu數據庫信息
const _localhost = ["127.0.0.1", "pbl"]; //edu數據庫信息
const crypto = require("crypto");
const https = require("https");
const { Pool } = require('pg');
const axios = require('axios');
const multer = require("multer");

const loginHandler = require('./login'); // 确保路径正确
const { r2rClient } = require("r2r-js");
const client = new r2rClient("https://r2rserver.cocorobo.cn/");

// 配置 multer 存储选项
const storage = multer.diskStorage({
  destination: function (req, file, cb) {
    req.setEncoding('utf-8');
    cb(null, 'uploads/'); // 文件上传目录
  },
  filename: function (req, file, cb) {
    req.setEncoding('utf-8');
    // 使用 Buffer 处理文件名，确保编码正确
    const fileExtension = file.originalname.split('.').pop(); // 获取文件后缀
    const fileNameWithoutExt = Buffer.from(file.originalname.slice(0, -(fileExtension.length + 1)), 'latin1').toString('utf8'); // 转换编码
    cb(null, fileNameWithoutExt + '-' + Date.now() + '.' + fileExtension); // 使用时间戳和原始文件名
  }
});

const upload = multer({ storage: storage, limits: {
    fileSize: 100 * 1024 * 1024 // 100MB
} });

router.route("/login").all(async (req, res, next) => {
    loginHandler(req, res)
});

router.route("/logout").all(async (req, res, next) => {
    try {
        const response = await client.users.logout();
        res.status(200).json({result: response.results});
    } catch (error) {
        res.status(500).json({error: error instanceof Error ? error.message : "An error occurred"});
    }
});

//获取文档列表
router.route("/getDocument").all(async (req, res, next) => {
    try {
        const response = await client.documents.list({
            limit: 10,
            offset: 0,
        });
        console.log(response);
        
        res.status(200).json({ result: response.results });
    } catch (error) {
        res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
    }
});

//列出文档块
router.route("/listChunks").all(async (req, res, next) => {
    try {
        const response = await client.documents.listChunks({
            id: "5111165f-965c-5d61-89e3-1f74b0178032",
        });
        console.log(response);
        
        res.status(200).json({ result: response.results });
    } catch (error) {
        res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
    }
});

//提取实体和关系
router.route("/extract").all(async (req, res, next) => {
    try {
        const response = await client.documents.extract({ id: "5111165f-965c-5d61-89e3-1f74b0178032" })
        console.log(response);
        
        res.status(200).json({ result: response.results });
    } catch (error) {
        res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
    }
});



router.route("/selectUser").all((req, res, next) => {
    var json = queryString(req.url);
    getmysql(req, res, "selectUser", json["userid"]);
});

// 文件上传接口
router.post('/upload', upload.single('file'), async (req, res) => {
    req.setEncoding('utf-8')
    try {
        console.log(req.file); // 打印上传的文件信息
        console.log(`File path: uploads/${req.file.filename}`);
        const path = require('path');
        const filePath = path.resolve(__dirname, 'uploads', req.file.filename);
        console.log(filePath);
        
        let filename = Buffer.from(req.file.originalname, 'latin1').toString('utf8');
        const fs = require('fs');
        const file = new File([fs.readFileSync('./uploads/q-1739170522767.doc')], filename, { type: req.file.mimetype });
        const response = await client.documents.create({
            file: file,
            metadata: { title: filename }
        });
        console.log(response);
        
        res.status(200).json({ message: 'File uploaded successfully', file: req.file });
    } catch (error) {
        res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
    }
});

//获取文档列表
router.route("/getFile").all(async (req, res, next) => {
    //mode的处理
    if (req.body[0]) {
        p =  Object.values(req.body[0]);
        p.unshift(_mysqlLabor[0], _mysqlLabor[1], "getFile");
        mysql.usselect(p, async function(ret) {
            console.log(ret);
            // let array = []
            res.end(JSON.stringify(ret));
            // try {
            //     const response = await client.documents.list({ ids: [] });
            //     console.log(response);
                
            //     res.status(200).json({ result: response.results });
            // } catch (error) {
            //     res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
            // }
        });
    }
});


function generateAPIKey(username) {
    let timeStamp = new Date().getTime();

    let hashStr = timeStamp + username;

    let digest = crypto
        .createHash("sha256")
        .update(hashStr, "utf8")
        .digest("hex");

    return digest;
}

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

//post存儲過程處理
postmysql = function(req, res, functionname) {
    //mode的處理
    if (req.body[0]) {
        p = Object.values(req.body[0]);
        p.unshift(_mysqlLabor[0], _mysqlLabor[1], functionname);
        //執行存儲過程
        mysql.usselect(p, function(ret) {
            res.end(JSON.stringify(ret));
        });
    }
};

//post存儲過程處理
postmysql2 = function(req, res, functionname) {
    //mode的處理
    if (req.body) {
        p = Object.values(req.body)[0].split(",");
        p.unshift(_mysqlLabor[0], _mysqlLabor[1], functionname);
        //執行存儲過程
        mysql.usselect(p, function(ret) {
            res.end(JSON.stringify(ret));
        });
    }
};

//post存儲過程處理
postmysql3 = function(req, res, functionname) {
    //mode的處理
    if (req.body) {
        p = Object.values(req.body);
        p.unshift(_mysqlLabor[0], _mysqlLabor[1], functionname);
        //執行存儲過程
        mysql.usselect(p, function(ret) {
            res.end(JSON.stringify(ret));
        });
    }
};

//get獲取數據庫信息
getmysql = function(req, res, functionname, ...p) {
    p = p || [];
    p.unshift(_getmysqlLabor[0], _getmysqlLabor[1], functionname);
    //執行存儲過程
    mysql.usselect(p, function(ret) {
        res.end(JSON.stringify(ret));
    }); //
};

//get獲取數據庫信息
getmysql2 = function(req, res, functionname, ...p) {
    p = p || [];
    p.unshift(_mysqlLabor[0], _mysqlLabor[1], functionname);
    //執行存儲過程
    mysql.usselect(p, function(ret) {
        res.end(JSON.stringify(ret));
    }); //
};

//get獲取數據庫信息
getmysql3 = function(req, res, functionname, ...p) {
    p = p || [];
    p.unshift(_getmysqlLabor2[0], _getmysqlLabor2[1], functionname);
    //執行存儲過程
    mysql.usselect(p, function(ret) {
        res.end(JSON.stringify(ret));
    }); //
};


//post存储过程处理

userpostmysql = function(req, res, functionname) {
    //mode的处理

    if (req.body.mode) {
        p = req.body.mode.split(",");

        p.unshift(_mysqluser[0], _mysqluser[1], functionname);

        //执行存储过程

        mysql.usselect(p, function(ret) {
            res.end(JSON.stringify(ret));
        });
    }
};

//get获取数据库信息

usergetmysql = function(req, res, functionname, ...p) {
    p = p || [];

    p.unshift(_mysqluser[0], _mysqluser[1], functionname);
    
    //执行存储过程

    mysql.usselect(p, function(ret) {
        res.end(JSON.stringify(ret));
    }); //
};

//post存儲過程處理
postmysqlLocal = function(req, res) {
    //mode的處理
    if (req.body[0]) {
        p = Object.values(req.body[0]);
        p.unshift(_localhost[0], _localhost[1]);
        //執行存儲過程
        mysql.usselect(p, function(ret) {
            res.end(JSON.stringify(ret));
        });
    }
};

postmysqlOnline = function(req, res) {
    //mode的處理
    if (req.body[0]) {
        p = Object.values(req.body[0]);
        p.unshift(_mysqlLabor[0], _mysqlLabor[1]);
        //執行存儲過程
        mysql.usselect(p, function(ret) {
            res.end(JSON.stringify(ret));
        });
    }
};



module.exports = router;