gocodebox/lifterlms

<?php
/**
 * LLMS_Forms Data class file
 *
 * @package LifterLMS/Classes
 *
 * @since 5.0.0
 * @version 5.0.0
 */

defined( 'ABSPATH' ) || exit;

/**
 * Manage data associated with llms_form posts
 *
 * @since 5.0.0
 */
class LLMS_Forms_Data {

    /**
     * Reference to the LLMS_Forms instance
     *
     * @var LLMS_Forms
     */
    private $forms = null;

    /**
     * Constructor
     *
     * @since 5.0.0
     *
     * @return void
     */
    public function __construct() {

        $this->forms = LLMS_Forms::instance();

        add_action( "save_post_{$this->forms->get_post_type()}", array( $this, 'save_username_locations' ), 10, 2 );

    }

    /**
     * Locate a username/user login block within a list of blocks
     *
     * Checks into innerBlocks recursively.
     *
     * @since 5.0.0
     *
     * @param array[] $blocks Array of WP_Block definition arrays.
     * @return boolean Returns `true` when a username block is found, otherwise returns `false`.
     */
    private function has_username_block( $blocks ) {

        foreach ( $blocks as $block ) {

            if ( 'llms/form-field-user-login' === $block['blockName'] ) {
                return true;
            } elseif ( $block['innerBlocks'] ) {
                if ( $this->has_username_block( $block['innerBlocks'] ) ) {
                    return true;
                }
            }
        }

        return false;

    }

    /**
     * When saving a form store a form reference in the options table
     *
     * This will be used to LLMS_Forms::are_usernames_enabled() to determine
     * if the site allows login via usernames.
     *
     * Callback function for save_post_llms_forms and delete_post hooks.
     *
     * @since 5.0.0
     *
     * @param int     $post_id ID of the form being saved.
     * @param WP_Post $post    Form post object.
     * @return int[] Returns an array of WP_Post IDs representing all the forms where the username block existss.
     */
    public function save_username_locations( $post_id, $post ) {

        // Load existing locations.
        $locations = get_option( 'llms_forms_username_locations', array() );

        $post_id            = absint( $post_id );
        $blocks             = $this->forms->parse_blocks( $post->post_content );
        $has_username_block = $this->has_username_block( $blocks );

        // Add or remove the location depending on the presence of the block.
        if ( $has_username_block ) {
            $locations[] = $post_id;
        } else {
            $locations = array_diff( $locations, array( $post_id ) );
        }

        $locations = array_unique( $locations );

        // Store it.
        update_option( 'llms_forms_username_locations', $locations );

        return $locations;

    }

}

return new LLMS_Forms_Data();