const jwt = require("jsonwebtoken");
const { User } = require("../models"); // Import from models/index.js to get models with associations
const logger = require("../utils/logger");

const authenticateToken = async (req, res, next) => {
  // First try to get token from cookie
  let token = req.cookies?.accessToken;

  if (!token) {
    return res.status(401).json({
      error: "Access token required",
      code: "NO_TOKEN",
    });
  }

  try {
    const decoded = jwt.verify(token, process.env.JWT_SECRET);
    const userId = decoded.id;

    if (!userId) {
      return res.status(401).json({
        error: "Invalid token format",
        code: "INVALID_TOKEN_FORMAT",
      });
    }

    const user = await User.findByPk(userId);

    if (!user) {
      return res.status(401).json({
        error: "User not found",
        code: "USER_NOT_FOUND",
      });
    }

    req.user = user;
    next();
  } catch (error) {
    // Check if token is expired
    if (error.name === "TokenExpiredError") {
      return res.status(401).json({
        error: "Token expired",
        code: "TOKEN_EXPIRED",
      });
    }

    const reqLogger = logger.withRequestId(req.id);
    reqLogger.error("Auth middleware error", {
      error: error.message,
      stack: error.stack,
      tokenPresent: !!token,
      userId: req.user?.id
    });
    return res.status(403).json({
      error: "Invalid token",
      code: "INVALID_TOKEN",
    });
  }
};

module.exports = { authenticateToken };