File forms/processor-spam-check.php

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<?php

namespace SIW\Forms;

use SIW\External\Spam_Check as External_Spam_Check;

/**
 * Class voor Anti-Spam formprocessor
 * 
 * @copyright 2019 SIW Internationale Vrijwilligersprojecten
 * @since     3.0.0
 */
class Processor_Spam_Check {

    /**
     * Init
     */
    public function __construct() {
        add_filter( 'caldera_forms_get_form_processors', [ $this, 'add_form_processor'] );
    }

    /**
     * Voegt processer toe
     *
     * @param array $processors
     * @return array
     */
    public function add_form_processor( array $processors ) {
        $processors['siw_spam_check'] = [
            'name'          => __( 'Spam Check', 'siw' ),
            'description'   => __( 'Spam check bij StopForumSpam.com', 'siw' ),
            'pre_processor' => [ $this, 'preprocess'],
            'single'        => true,
            'magic_tags'    => [
                'spam'
            ]
        ];
        return $processors;
    }

    /**
     * Breek formulierverwerking af als het een spammer is
     *
     * @param array $config
     * @param array $form
     * @param string $process_id
     * 
     * @return array
     */
    public function preprocess( array $config, array $form, string $process_id ) {
        if ( $this->is_spam( $config, $form ) ) {
            return [
                'note' => __( 'Er is helaas iets misgegaan.', 'siw' ),
                'type' => 'error'
            ];
        }
        return;
    }

    /**
     * Voer spamcheck uit
     *
     * @param array $config
     * @param array $form
     * @return bool
     * 
     * @todo wp_blacklist_check() gebruiken voor inhoud van bericht / of setting met blacklist van woorden maken
     */
    protected function is_spam( array $config, array $form ) {

        $data = \Caldera_Forms::get_submission_data( $form );
        $spam_check = new External_Spam_Check();
        $spam_check->set_email( $data[ $config['email'] ] );
        $spam_check->set_ip( $_SERVER['REMOTE_ADDR'] );
        
        return $spam_check->is_spammer();
    }
}

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