const errors = require('restify-errors');

const config = require('../config');

const handlePassportResponse = (req, res, next) => (err, passportUser, info) => {
    if (err) {
      return next(err);
    }

    const isVerifiedUser = passportUser.isRegistrationVerified();
    if (passportUser && isVerifiedUser) {
      const user = passportUser;
      user.token = passportUser.generateJWT();
      return res.send({ ...user.toAuthJSON() });
    } else if (passportUser && !isVerifiedUser){
      return res.send({
        registrationSuccess: true,
        nextSteps: 'Check your email for our confirmation email, you will not be able to login without confirming.'
      });
    }

    return res.send(400, info);
};

module.exports = function (server, auth) {
  const { passport } = auth;

  /* Local Auth */
	server.post('/auth', (req, res, next) => {
    const { body: { username = null, password = null } = {} } = req;

    if (!username || !password) {
      let errors = {};

      if (!username) {
        errors.username = 'is required';
      }

      if (!password) {
        errors.password = 'is required';
      }

      return res.send(422, { errors });
    }

    const callback = handlePassportResponse(req, res, next);
    return passport.authenticate('local', { session: false }, callback)(req, res, next);
	});

	/**
	 * SERVICES
	 */

  /* Google */
	server.get(
	  '/auth/google',
	  passport.authenticate('google', { scope: 'profile email', session: false }),
	);

	server.get(
	  '/auth/google/callback',
	  (req, res, next) => {
      const callback = handlePassportResponse(req, res, next);
      return passport.authenticate(
        'google',
        { failureRedirect: '/login' },
        callback,
      )(req, res, next);
    },
	);

  /* Facebook */
	server.get(
	  '/auth/facebook',
	  passport.authenticate('facebook', {
	    scope: ['email', 'public_profile'],
	    session: false,
	  }),
	);

	server.get(
	  '/auth/facebook/callback',
	  (req, res, next) => {
      const callback = handlePassportResponse(req, res, next);
      return passport.authenticate(
        'facebook',
        { failureRedirect: '/login' },
        callback,
      )(req, res, next);
	  }
	);
};