const express = require('express')
const app = express()
const port = 7860
const axios = require('axios')
const { connectToMongoDB } = require('./database');

const startup = async () => {
    try {
        console.log("Starting application...");
        await connectToMongoDB();
        console.log("MongoDB connected successfully.");
    } catch (error) {
        console.error("Error during startup:", error.message);
        process.exit(1);
    }
};

const startServer = async () => {
    await startup();
    app.listen(port, () => {
        console.log(`Server running on http://localhost:${port}`);
    });
};

const IPAddressAndUpdate = async (ip) => {
    try {
        const db = await connectToMongoDB();
        const collection = db.collection("FastJsAPI");
        const filter = { ip: ip };
        const update = { $set: { ip: ip } };
        const result = await collection.updateOne(filter, update, { upsert: true });

        if (result.upsertedCount > 0) {
            console.log("Inserted a new IP address:", ip);
        } else {
            console.log("Updated an existing IP address:", ip);
        }
    } catch (error) {
        console.error("Error updating IP address:", error.message);
    }
};

const AddIpisBlocked = async (ip) => {
    try {
        const db = await connectToMongoDB();
        const collection = db.collection("FastJsAPI");
        const filter = { ip: ip };
        const update = { $set: { blocked: true } };
        const result = await collection.updateOne(filter, update, { upsert: true });

        if (result.upsertedCount > 0) {
            console.log("Inserted a new IP address:", ip);
        } else {
            console.log("Updated an existing IP address:", ip);
        }
    } catch (error) {
        console.error("Error updating IP address:", error.message);
    }
};


const CheckIsBlocked = async (ip) => {
    try {
        const db = await connectToMongoDB();
        const collection = db.collection("FastJsAPI");
        const filter = { ip: ip };
        const FindIp = await collection.findOne(filter);

        if (FindIp) {
            console.log("IP found in the database:", FindIp);
            return FindIp;
        } else {
            console.log("IP not found in the database");
            return null;
        }
    } catch (error) {
        console.error("Error checking IP:", error.message);
        return null;
    }
};

app.get('/', (req, res) => {
  res.redirect('https://t.me/RendyProjects');
});

app.use(async (req, res, next) => {
  const xForwardedFor = req.headers['x-forwarded-for'];
  const xRealIP = req.headers['x-real-ip'];
  const cfConnectingIP = req.headers['cf-connecting-ip'];

  let realIP = req.ip;

  if (xForwardedFor) {
    realIP = xForwardedFor.split(',')[0].trim();
  }
  else if (xRealIP){
      realIP = xRealIP;
  }
  else if (cfConnectingIP) {
    realIP = cfConnectingIP;
  }

  req.realIP = realIP;
  const isBlocked = await CheckIsBlocked(realIP)
  if (isBlocked && isBlocked.blocked === true) {
    return res.status(403).send("Access denied: IP is blocked");
  }
  if (req.path === '/env') {
    console.log("check path /env");
    await AddIpisBlocked(realIP)
    return res.status(403).send("Access denied: IP is blocked..");
  } 
  
  await IPAddressAndUpdate(realIP);
  console.log(`Real IP address is: ${realIP}, header: ${xForwardedFor ? "x-forwarded-for" : xRealIP ? "x-real-ip" : cfConnectingIP ? "cf-connecting-ip" : "req.ip"} `);
  await next();
});

app.get('/api/test', async (req, res) => {
  try {
    // console.log("Test", req)
    res.send("Hello world")
  } catch (error) {
    res.status(401).json({error: error.message})
  }
})

const payload = (prompt) => ({
    model: "gpt-4o",
    prompt: prompt,
    top_p: 1,
    logprobs: null,
    stop: null
});

const OpenaiRes = async (prompt) => {
    try {
        const EncodeUrl = "aHR0cHM6Ly9vcGVuYWktZ3B0LnJlbWl4cHJvamVjdC5vcmcv"
        let url;
        try {
           url = atob(EncodeUrl);
        } catch (e) {
            console.error("Could not decode the string! " + e);
        }
        const headers = {
            "Accept": "application/json",
            "Content-Type": "application/json",
            "Accept-Language": "en",
            "Connection": "keep-alive",
            "Origin": "https://remix.ethereum.org",
            "Referer": "https://remix.ethereum.org/",
            "Sec-Fetch-Dest": "empty",
            "Sec-Fetch-Mode": "cors",
            "Sec-Fetch-Site": "cross-site",
            "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36 Edge/17.17134"
        };
        const response = await axios.post(url, payload(prompt), { headers, timeout: 50000 });
        if (response.status === 200) {
          return response.data.choices[0].message.content + "\n\nPowered By xtdevs";
        }
        // console.log("Response:", response)
    } catch (error) {
        console.error("Error:", error.message);
        return null;
    }
};

app.get('/api/gpt-old', async (req, res) => {
  try {
    const query = req.query.query;
    const results = await OpenaiRes(query);
    res.json({ results });
  } catch (error) {
    res.status(401).json({ error: error.message });
  }
});


startServer();