import express, { Request, Response, NextFunction } from 'express';
import jwt, { JwtPayload } from 'jsonwebtoken';
import cookieParser from 'cookie-parser';

interface AuthenticatedRequest extends Request {
  userId?: string;
}

// Middleware function to authenticate requests
export function authenticateToken(req: AuthenticatedRequest, res: Response, next: NextFunction) {

  const token = req.cookies.access_token;
  if (!token) {
    return res.status(401).json({ error: 'Unauthorized' });
  }

  const user_id = jwt.verify(token, process.env.JWT_SECRET as string, (err, decoded) => {
    if (err) {
      return res.status(401).json({ error: 'In Valid Token' });
    }
    req.userId = decoded.userId;
    next();
  });
}

// Set JWT as cookie in the response
export function setJwtCookie(res: Response, token: string) {
  res.cookie('access_token', token, { httpOnly: true });
}

// Clear JWT cookie in the response
export function clearJwtCookie(res: Response) {
  res.clearCookie('access_token');
}