<?php
/**
 * Register Functions
 *
 * @package     EDD
 * @subpackage  Functions/Login
 * @copyright   Copyright (c) 2018, Easy Digital Downloads, LLC
 * @license     http://opensource.org/licenses/gpl-2.0.php GNU Public License
 * @since       1.0
 */

// Exit if accessed directly
defined( 'ABSPATH' ) || exit;

/**
 * Registration Form
 *
 * @since 2.0
 * @global $post
 * @param string $redirect Redirect page URL
 * @return string Register form
*/
function edd_register_form( $redirect = '' ) {
	global $edd_register_redirect;

	if ( empty( $redirect ) ) {
		$redirect = edd_get_current_page_url();
	}

	$edd_register_redirect = $redirect;

	ob_start();

	edd_get_template_part( 'shortcode', 'register' );

	return apply_filters( 'edd_register_form', ob_get_clean() );
}

/**
 * Process Register Form
 *
 * @since 2.0
 * @param array $data Data sent from the register form
 * @return void
*/
function edd_process_register_form( $data ) {

	if ( is_user_logged_in() ) {
		return;
	}

	if ( empty( $data['edd_register_submit'] ) ) {
		return;
	}

	do_action( 'edd_pre_process_register_form' );

	if ( empty( $data['edd_user_login'] ) ) {
		edd_set_error( 'empty_username', __( 'Invalid username', 'easy-digital-downloads' ) );
	}

	if ( username_exists( $data['edd_user_login'] ) ) {
		edd_set_error( 'username_unavailable', __( 'Username already taken', 'easy-digital-downloads' ) );
	}

	if ( ! validate_username( $data['edd_user_login'] ) ) {
		edd_set_error( 'username_invalid', __( 'Invalid username', 'easy-digital-downloads' ) );
	}

	$customers = edd_get_customers(
		array(
			'email' => $data['edd_user_email'],
		)
	);
	if ( email_exists( $data['edd_user_email'] ) || ! empty( $customers ) ) {
		edd_set_error( 'email_unavailable', __( 'This email address is not available.', 'easy-digital-downloads' ) );
	}

	if ( empty( $data['edd_user_email'] ) || ! is_email( $data['edd_user_email'] ) ) {
		edd_set_error( 'email_invalid', __( 'Invalid email', 'easy-digital-downloads' ) );
	}

	if ( ! empty( $data['edd_payment_email'] ) && $data['edd_payment_email'] != $data['edd_user_email'] && ! is_email( $data['edd_payment_email'] ) ) {
		edd_set_error( 'payment_email_invalid', __( 'Invalid payment email', 'easy-digital-downloads' ) );
	}

	if ( isset( $data['edd_honeypot'] ) && ! empty( $data['edd_honeypot'] ) ) {
		edd_set_error( 'invalid_form_data', __( 'Registration form validation failed.', 'easy-digital-downloads' ) );
	}

	// Check if password is one or all empty spaces.
	if ( ! empty( $data['edd_user_pass'] ) ) {
		$data['edd_user_pass'] = trim( $data['edd_user_pass'] );
	}

	if ( empty( $data['edd_user_pass'] ) ) {
		edd_set_error( 'empty_password', __( 'The password cannot be a space or all spaces.', 'easy-digital-downloads' ) );
	}

	// Check if password fields do not match.
	if ( ! empty( $data['edd_user_pass'] ) && ( empty( $data['edd_user_pass2'] ) || trim( $data['edd_user_pass2'] ) !== $data['edd_user_pass'] ) ) {
		edd_set_error( 'password_mismatch', __( 'The passwords do not match.', 'easy-digital-downloads' ) );
	}

	do_action( 'edd_process_register_form' );

	// Check for errors and redirect if none present.
	$errors = edd_get_errors();

	if ( empty( $errors ) ) {

		$redirect = apply_filters( 'edd_register_redirect', $data['edd_redirect'] );

		edd_register_and_login_new_user(
			array(
				'user_login'      => $data['edd_user_login'],
				'user_pass'       => $data['edd_user_pass'],
				'user_email'      => $data['edd_user_email'],
				'user_registered' => date( 'Y-m-d H:i:s' ),
				'role'            => get_option( 'default_role' ),
			)
		);

		edd_set_success( 'account_registration_successful', __( 'Your account has been successfully created.', 'easy-digital-downloads' ) );

		edd_redirect( $redirect );
	}
}
add_action( 'edd_user_register', 'edd_process_register_form' );