import { statusCodes, makeResponse, responseMessages } from '../helper/index.js';
import { verifyToken } from '../helper/index.js';

// Middleware function for authentication
export default async function auth(req, res, next) {
    try {
        // Retrieve the token from the request headers
        const token = req.headers["Authorization"] || req.headers["authorization"];
        
        // Check if token is present or not
        if (!token) {
        
            return makeResponse(res, statusCodes.AUTH_ERROR, false, responseMessages.UNAUTHORIZED);
        }

        // Verify the token using the verifyToken function
        const decode = await verifyToken(token, 'access');
        
        // Verify if token is valid or not
        if (!decode) {
            return makeResponse(res, statusCodes.AUTH_ERROR, false, responseMessages.UNAUTHORIZED);
        }

        // Check if the decoded token contains an email
        if (decode.data?.email == null || decode.data?.email == undefined) {
        
            return makeResponse(res, statusCodes.AUTH_ERROR, false, responseMessages.UNAUTHORIZED);
        }
        
        // Attach the user data to the request object
        req.user = decode.data;
        
        
        next();
    } catch (err) {
     
        return makeResponse(res, statusCodes.AUTH_ERROR, false, err.message);
    }
};