import express from 'express';
import { Database } from '../database/database.js';
import { predictCreationDate } from '../lib/create-date.js';
import { authenticateApiKey, apiLimiter } from '../middleware/midware.js';
const AntibanRoutes = express.Router();

const protectedUsers = [6477856957, 1191668125, 1448273246, 1054295664, 6444305696];

AntibanRoutes.get("/api/v1/user/creation-date", authenticateApiKey, apiLimiter, (req, res) => {
    const userId = Number(req.query.user_id);
    if (!userId || isNaN(userId)) {
        return res.status(400).json({ error: "Invalid or missing user_id" });
    }

    const result = predictCreationDate(userId);
    res.json({ user_id: userId, estimated_creation: result });
});

AntibanRoutes.post("/api/v1/user/ban-user", authenticateApiKey, apiLimiter, async (req, res) => {
    const dbClient = new Database("AkenoXJs");
    const collection = dbClient.collection("ban_users");
    const collectionKey = dbClient.collection("api_keys");

    try {
        const apiKey = req.headers["x-api-key"];
        const userIdString = req.query.user_id;
        const reasonString = req.query.reason;
        const userIdNumber = Number(userIdString);

        if (!apiKey) {
            return res.status(400).json({ error: "Missing API key in headers" });
        }
        if (isNaN(userIdNumber)) {
            return res.status(400).json({ error: "Invalid or missing user_id" });
        }

        const existingUserKey = await collectionKey.findOne({ key: apiKey });
        if (!existingUserKey) {
            return res.status(401).json({ message: "API key not found" });
        }

        if (existingUserKey.owner === userIdNumber) {
            return res.status(200).json({ 
              message: `User ${userIdNumber} cannot be banned because they created the API key`,
              is_ban: false
            });
        }
        if (protectedUsers.includes(userIdNumber)) {
            return res.status(403).json({ 
              message: `User ${userIdNumber} is a protected admin and cannot be banned`,
              is_ban: false 
            });
        }

        const existingBan = await collection.findOne({ user_ban: userIdNumber });
        if (existingBan) {
            return res.status(200).json({ message: `User ${userIdNumber} is already banned`, is_ban: true });
        }

        await collection.updateOne(
            { key: existingUserKey.key },
            { $addToSet: { user_ban: userIdNumber }, $set: { updatedAt: new Date(), owner: existingUserKey.owner } },
            { upsert: true }
        );

        res.json({ message: `User ${userIdNumber} successfully banned`, is_ban: true });

    } catch (error) {
        res.status(500).json({ error: `Internal server error: ${error.message}` });
    }
});

AntibanRoutes.post("/api/v1/user/anti-broadcast", authenticateApiKey, async (req, res) => {
    const dbClient = new Database("AkenoXJs");
    const collection = dbClient.collection("users_broadcast");
    const collectionKey = dbClient.collection("api_keys");

    try {
        const apiKey = req.headers["x-api-key"];
        const userIdString = req.query.user_id;
        const WorldString = req.query.text;
        const userIdNumber = Number(userIdString);

        if (!apiKey) {
            return res.status(400).json({ error: "Missing API key in headers" });
        }
        if (!WorldString) {
            return res.status(400).json({ error: "Missing params: text" });
        }
        if (isNaN(userIdNumber)) {
            return res.status(400).json({ error: "Invalid or missing user_id" });
        }
        
        const existingUserKey = await collectionKey.findOne({ key: apiKey });

        if (!existingUserKey) {
            return res.status(401).json({ message: "API key not found" });
        }

        if (existingUserKey.owner === userIdNumber) {
            return res.status(200).json({ 
                message: `User ${userIdNumber} cannot be broadcast because they created the API key`,
                is_broadcast: false
            });
        }

        const existingBroadcast = await collection.findOne({ user_id: userIdNumber });
        if (existingBroadcast) {
            return res.status(200).json({ message: `User ${userIdNumber} is already broadcasting`, is_broadcast: true });
        }

        if (WorldString.length > 3096) {
            return res.status(400).json({ message: `User ${userIdNumber} is sending a spam broadcast`, is_broadcast: true });
        }

        await collection.updateOne(
            { user_id: userIdNumber },
            { 
                $set: { 
                    text: WorldString, 
                    updatedAt: new Date(), 
                    owner: existingUserKey.owner, 
                    is_broadcast: true 
                } 
            },
            { upsert: true }
        );

        res.json({ message: `User ${userIdNumber} successfully broadcast`, is_broadcast: true });

    } catch (error) {
        res.status(500).json({ error: `Internal server error: ${error.message}` });
    }
});

AntibanRoutes.get("/api/v1/user/check-broadcast", authenticateApiKey, async (req, res) => {
    const dbClient = new Database("AkenoXJs");
    const collection = dbClient.collection("users_broadcast");

    try {
        const userIdString = req.query.user_id;
        const userIdNumber = Number(userIdString);

        if (isNaN(userIdNumber)) {
            return res.status(400).json({ error: "Invalid or missing user_id" });
        }

        const GikesUser = await collection.findOne({ user_id: userIdNumber });

        if (GikesUser) {
            return res.status(200).json({ message: `User ${userIdNumber} is broadcast`, is_broadcast: true });
        } else {
            return res.status(200).json({ message: `User ${userIdNumber} is not broadcast`, is_broadcast: false });
        }

    } catch (error) {
        res.status(500).json({ error: `Internal server error: ${error.message}` });
    }
});

AntibanRoutes.get("/api/v1/user/check-ban", authenticateApiKey, async (req, res) => {
    const dbClient = new Database("AkenoXJs");
    const collection = dbClient.collection("ban_users");

    try {
        const userIdString = req.query.user_id;
        const userIdNumber = Number(userIdString);

        if (isNaN(userIdNumber)) {
            return res.status(400).json({ error: "Invalid or missing user_id" });
        }

        const bannedUser = await collection.findOne({ user_ban: userIdNumber });

        if (bannedUser) {
            return res.status(200).json({ message: `User ${userIdNumber} is banned`, is_ban: true });
        } else {
            return res.status(200).json({ message: `User ${userIdNumber} is not banned`, is_ban: false });
        }

    } catch (error) {
        res.status(500).json({ error: `Internal server error: ${error.message}` });
    }
});

export { AntibanRoutes };