// 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) {
            let data = ret[0];
            // const array = data.map(item => item.documentid);
            try {
                const response = await client.documents.list({ collection_ids: [req.body[0].folderid] });
                // console.log(response);
                let data2 = response.results.map(doc => {
                    doc.documentid = doc.id;
                    delete doc.id;
                    return doc;
                });

                // 合并data和data2，根据documentid
                const mergedData = data.map(item => {
                    const correspondingDoc = data2.find(doc => doc.documentid === item.documentid);
                    return { ...item, ...correspondingDoc };
                });

                res.status(200).json({ result: mergedData });
            } catch (error) {
                res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
            }
        });
    }
});

//获取文档列表2
router.route("/getFileP").all(async (req, res, next) => {
    //mode的处理
    if (req.body) {
        p = [req.body.uid, req.body.folderid, req.body.n, req.body.page, req.body.num];
        p.unshift(_mysqlLabor[0], _mysqlLabor[1], "getFile");
        mysql.usselect(p, async function(ret) {
            let data = ret[0];
            // const array = data.map(item => item.documentid);
            try {
                const response = await client.documents.list({ collection_ids: [req.body.folderid] });
                // console.log(response);
                let data2 = response.results.map(doc => {
                    doc.documentid = doc.id;
                    delete doc.id;
                    return doc;
                });

                // 合并data和data2，根据documentid
                const mergedData = data.map(item => {
                    const correspondingDoc = data2.find(doc => doc.documentid === item.documentid);
                    return { ...item, ...correspondingDoc };
                });

                res.status(200).json({ result: mergedData });
            } catch (error) {
                res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
            }
        });
    }
});

//获取能关联的文件
router.route("/getFile2").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], "getFile2");
        mysql.usselect(p, async function(ret) {
            let data = ret[0];
            // const array = data.map(item => item.documentid);
            try {
                const response = await client.documents.list({ collection_ids: [req.body[0].folderid] });
                // console.log(response);
                let data2 = response.results.map(doc => {
                    doc.documentid = doc.id;
                    delete doc.id;
                    return doc;
                });

                // 合并data和data2，根据documentid
                const mergedData = data.map(item => {
                    const correspondingDoc = data2.find(doc => doc.documentid === item.documentid);
                    return { ...item, ...correspondingDoc };
                });

                res.status(200).json({ result: mergedData });
            } catch (error) {
                res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
            }
        });
    }
});

//添加文件夹
router.route("/addFolder").all(async (req, res, next) => {
    //mode的处理
    if (req.body[0]) {
        try {
            const response = await client.collections.create({
                name: decodeURIComponent(req.body[0].n),
                description: decodeURIComponent(req.body[0].fd)
            });
            p =  [...Object.values(req.body[0]), response.results.id];
            p.unshift(_mysqlLabor[0], _mysqlLabor[1], "addFolder");
            mysql.usselect(p, async function(ret) {
                res.end(JSON.stringify(ret));
            });
           
        } catch (error) {
            res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
        }

    }
});

//删除文件夹
router.route("/deleteFolder").all(async (req, res, next) => {
    //mode的处理
    if (req.body[0]) {
        try {
            let folderids = decodeURIComponent(req.body[0].folderids).split(",")
            let ids = req.body[0].ids
            await Promise.all(folderids.map(folderid => client.collections.delete({ id: folderid })));
            p =  [ids];
            p.unshift(_mysqlLabor[0], _mysqlLabor[1], "deleteFolder");
            mysql.usselect(p, async function(ret) {
                res.end(JSON.stringify(ret));
            });
           
        } catch (error) {
            res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
        }

    }
});

//修改文件夹
router.route("/updateFolder").all(async (req, res, next) => {
    //mode的处理
    if (req.body[0]) {
        try {
            const { folderid, ...folderData } = req.body[0]; // 解构赋值，排除folderid
            const response = await client.collections.update({
                id: folderid,
                description:  decodeURIComponent(req.body[0].d)
            });
            
            p = Object.values(folderData); // 获取剩余属性的键
            
            p.unshift(_mysqlLabor[0], _mysqlLabor[1], "updateFolder");
            mysql.usselect(p, async function(ret) {
                res.end(JSON.stringify(ret));
            });
           
        } catch (error) {
            res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
        }

    }
});

//移除文件
router.route("/removeFile").all(async (req, res, next) => {
    if (req.body[0]) {
        try {
            let documentids = decodeURIComponent(req.body[0].documentids).split(",")
            let folderid = req.body[0].folderid
            let ids = req.body[0].ids
            documentids.map(documentid => 
                client.collections.removeDocument({ id: folderid, documentId: documentid })
            )
            // await Promise.all(documentids.map(documentid => 
            //     client.collections.removeDocument({ id: folderid, documentId: documentid })
            // ));
            p =  [ids, folderid];
            p.unshift(_mysqlLabor[0], _mysqlLabor[1], "removeFile");
            mysql.usselect(p, async function(ret) {
                res.end(JSON.stringify(ret));
            });
           
        } catch (error) {
            res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
        }

    }
});

//移入文件
router.route("/moveFile").all(async (req, res, next) => {
    if (req.body[0]) {
        try {
            let documentids = decodeURIComponent(req.body[0].documentids).split(",")
            let folderid = req.body[0].folderid
            let ids = decodeURIComponent(req.body[0].ids).split(",")
            documentids.map(documentid => client.collections.addDocument({  
                id: folderid,
                documentId: documentid 
            }))
            // const results = await Promise.all(documentids.map(documentid => client.collections.addDocument({  
            //     id: folderid,
            //     documentId: documentid 
            // })));
            // console.log("每一条接口返回的值:", results); // 查看每一条接口返回来的值
            
            for (const id of ids) {
                p = [id, folderid];
                p.unshift(_mysqlLabor[0], _mysqlLabor[1], "moveFile");
                const ret = await mysql.usselect(p, async function(ret) {});
            }
            res.status(200).json({ messages: "移动成功" });
           
        } catch (error) {
            res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
        }

    }
});

//移入文件
router.route("/deleteFile").all(async (req, res, next) => {
    if (req.body[0]) {
        try {
            let documentids = decodeURIComponent(req.body[0].documentids).split(",")
            let ids = req.body[0].ids
            documentids.map(documentid => client.documents.delete({
                id: documentid,
            }))
            // const results = await Promise.all(documentids.map(documentid => client.documents.delete({
            //     id: documentid,
            // })));
            // console.log("每一条接口返回的值:", results); // 查看每一条接口返回来的值
            
            p =  [ids];
            p.unshift(_mysqlLabor[0], _mysqlLabor[1], "deleteFile");
            mysql.usselect(p, async function(ret) {
                res.end(JSON.stringify(ret));
            });
           
        } catch (error) {
            res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
        }

    }
});

router.route("/getFolder").all((req, res, next) => {
    getmysql2(req, res, "getFolder", req.body.uid);
});

//search文件
router.route("/searchFile").all(async (req, res, next) => {
    if (req.body) {
        try {
            let filters = {}
            if(req.body.type == 1){
                filters = {"document_id": {"$in": req.body.ids}}
            }else if(req.body.type == 2){
                filters = {"collection_ids": {"$in": req.body.ids}}
            }
            const response = await client.retrieval.search({
                query: req.body.query,
                search_settings: {
                    filters: filters,
                    useSemanticSearch: true,
                    chunkSettings: {
                        limit: req.body.limit ? req.body.limit : 10, 
                        enabled: true
                    },
                }
            });
            res.status(200).json({ result: response.results });
           
        } catch (error) {
            res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
        }

    }
});

//提取文件实体
router.route("/extractFile").all(async (req, res, next) => {
    if (req.body) {
        try {
            const response = client.documents.extract({
                id:req.body.id
            })
            res.status(200).json({ result: response.results });
           
        } catch (error) {
            res.status(500).json({ error: error instanceof Error ? error.message : "An error occurred" });
        }

    }
});

//添加上传好的知识库文件
router.route("/addFile").all((req,res,next)=>{
	getmysql2(req, res, "add_file", req.body.n, req.body.did, req.body.uid, req.body.fid, req.body.mofid); 
})

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) {
        console.log(req);
        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;