<?php
if ( ! defined( 'ABSPATH' ) ) {
    exit;
}
if ( ! class_exists( 'ACHP_FrontEnd' ) ) {
    class ACHP_FrontEnd {
        public function __construct() {
            if ( class_exists( 'WC_Subscriptions_Order' ) ) {
                require_once ACHP_PLUGIN_DIR . '/inc/class-subscription.php';
            }
            add_action( 'woocommerce_after_checkout_validation', [ $this, 'achp_validation' ], 10, 2 );
        }

        public function achp_validation( $fields, $errors ) {
            $paymentMethod = $fields['payment_method'] ?? '';
            if ( 'ach_processing' !== $paymentMethod ) {
                return;
            }

            $paymentType = sanitize_text_field( wp_unslash( $_POST['ach_processing-payment-type'] ?? '' ) );
            if ( 'bank' === $paymentType ) {
                if ( '' === trim( (string) ( $_POST['ach_processing-holder-name'] ?? '' ) ) ) {
                    $errors->add( 'validation', __( 'Account holder name is required', ACHP_TEXT_DOMAIN ), 'ach_processing-holder-name' );
                } elseif ( '' === trim( (string) ( $_POST['ach_processing-account-number'] ?? '' ) ) ) {
                    $errors->add( 'validation', __( 'Account number is required', ACHP_TEXT_DOMAIN ) );
                } elseif ( '' === trim( (string) ( $_POST['ach_processing-routing-number'] ?? '' ) ) ) {
                    $errors->add( 'validation', __( 'Routing number is required', ACHP_TEXT_DOMAIN ) );
                }
            } else {
                if ( '' === trim( (string) ( $_POST['ach_processing-card-name'] ?? '' ) ) ) {
                    $errors->add( 'validation', __( 'Card holder name is required', ACHP_TEXT_DOMAIN ) );
                } elseif ( '' === trim( (string) ( $_POST['ach_processing-card-number'] ?? '' ) ) ) {
                    $errors->add( 'validation', __( 'Card number is required', ACHP_TEXT_DOMAIN ) );
                } elseif ( '' === trim( (string) ( $_POST['ach_processing-card-expiry'] ?? '' ) ) ) {
                    $errors->add( 'validation', __( 'Card expiry is required', ACHP_TEXT_DOMAIN ) );
                } elseif ( '' === trim( (string) ( $_POST['ach_processing-card-cvc'] ?? '' ) ) ) {
                    $errors->add( 'validation', __( 'Card CVC is required', ACHP_TEXT_DOMAIN ) );
                }
            }
        }
    }
    new ACHP_FrontEnd();
}