Displaying WPForms Pro on Quiz and Survey Master Results Pages

/**

 * WPForms QuizMaster Integration Standalone Snippet.

 */

add_action(

    'wpforms_loaded',

    function () {

		if ( ! class_exists( 'MLWQuizMasterNext' ) ) {

				return;

		}

		new WPForms_QuizMaster_Integration();

    }

);

class WPForms_QuizMaster_Integration {

	/**

	 * Constant representing the action to process a quiz.

	 */

	private const PROCESS_QUIZ_ACTION = 'qmn_process_quiz';

	/**

	 * Constructor - Initialize hooks.

	 */

	public function __construct() {

		$this->hooks();

	}

	/**

	 * Setup hooks.

	 */

	protected function hooks() {

		add_filter( 'wpforms_current_user_can', [ $this, 'allow_to_view_form' ], 10, 3 );

		add_filter( 'wpforms_frontend_form_action', [ $this, 'form_action_filter' ], 10, 2 );

		add_filter( 'qmn_end_quiz', [ $this, 'frontend_scripts' ], 10, 3 );

	}

	/**

	 * Allow viewing form during quiz processing.

	 */

	public function allow_to_view_form( $user_can, $caps, $id ) {

		$user_can = (bool) $user_can;

		if ( $user_can || ! $this->is_quiz_processing() ) {

			return $user_can;

		}

		return $caps === 'view_form_single';

	}

	/**

	 * Filter form action during quiz processing.

	 */

	public function form_action_filter( $action, $form_data ) {

		if ( $this->is_quiz_processing() ) {

			return '';

		}

		return (string) $action;

	}

	/**

	 * Add frontend scripts with inline JS.

	 */

	public function frontend_scripts( $value, $options, $quiz_data ) {

		if ( empty( $options->message_after ) ) {

			return (string) $value;

		}

		$this->enqueue_scripts_with_inline_js();

		return (string) $value;

	}

	/**

	 * Enqueue scripts with inline JS instead of separate file.

	 */

	private function enqueue_scripts_with_inline_js() {

		// Enqueue jQuery as dependency.

		wp_enqueue_script( 'jquery' );

		// Add inline script.

		$inline_js = "

		( function( document, window, $ ) {

			const app = {

				init: function() {

					$( app.ready );

				},

				ready: function() {

					if ( ! window.wpforms ) {

						return;

					}

					$( document ).on( 'qsm_after_quiz_submit', app.reInitWPForms );

				},

				reInitWPForms: function() {

					wpforms.init();

					if ( 'undefined' !== typeof wpformsRecaptchaLoad ) {

						wpformsRecaptchaLoad();

					}

					if ( 'undefined' !== typeof WPFormsRepeaterField ) {

						WPFormsRepeaterField.init();

					}

				}

			};

			app.init();

		}( document, window, jQuery ) );

		";

		wp_add_inline_script( 'jquery', $inline_js );

	}

	/**

	 * Check if quiz is being processed via AJAX.

	 */

	protected function is_quiz_processing() {

		if ( ! wp_doing_ajax() ) {

			return false;

		}

		$action = wp_unslash( $_POST['action'] ?? '' );

		return $action === self::PROCESS_QUIZ_ACTION;

	}

}