deep-web-solutions/wordpress-framework-foundations

<?php

namespace DeepWebSolutions\Framework\Foundations\Actions\Outputtable;

use DeepWebSolutions\Framework\Foundations\Helpers\ActionExtensionHelpersTrait;
use DeepWebSolutions\Framework\Foundations\Helpers\ActionLocalExtensionHelpersTrait;

\defined( 'ABSPATH' ) || exit;

/**
 * Basic implementation of the outputtable interface.
 *
 * @since   1.0.0
 * @version 1.0.0
 * @author  Antonius Hegyes <a.hegyes@deep-web-solutions.com>
 * @package DeepWebSolutions\WP-Framework\Foundations\Actions\Outputtable
 */
trait OutputtableTrait {
    // region TRAITS

    use ActionExtensionHelpersTrait;
    use ActionLocalExtensionHelpersTrait;

    // endregion

    // region FIELDS AND CONSTANTS

    /**
     * The result of the output operation. Null if successful.
     *
     * @since   1.0.0
     * @version 1.0.0
     *
     * @access  protected
     * @var     OutputFailureException|null
     */
    protected ?OutputFailureException $output_result;

    /**
     * Whether the using instance is outputted or not. Null if not decided yet.
     *
     * @since   1.0.0
     * @version 1.0.0
     *
     * @access  protected
     * @var     bool|null
     */
    protected ?bool $is_outputted = null;

    // endregion

    // region GETTERS

    /**
     * Returns the result of the output operation.
     *
     * @since   1.0.0
     * @version 1.0.0
     *
     * @return  OutputFailureException|null
     */
    public function get_output_result(): ?OutputFailureException {
        return $this->output_result;
    }

    /**
     * Returns whether the using instance is outputted or not. Null if not decided yet.
     *
     * @since   1.0.0
     * @version 1.0.0
     *
     * @return  bool|null
     */
    public function is_outputted(): ?bool {
        return $this->is_outputted;
    }

    // endregion

    // region METHODS

    /**
     * Simple output logic.
     *
     * @since   1.0.0
     * @version 1.0.0
     */
    public function output(): ?OutputFailureException {
        if ( \is_null( $this->is_outputted ) ) {
            if ( ! \is_null( $result = $this->maybe_execute_local_trait( OutputLocalTrait::class, 'output' ) ) ) { // phpcs:ignore
                $this->is_outputted  = false;
                $this->output_result = $result;
            } elseif ( ! \is_null( $result = $this->maybe_execute_extension_traits( OutputtableExtensionTrait::class ) ) ) { // phpcs:ignore
                $this->is_outputted  = false;
                $this->output_result = $result;
            } else {
                $this->is_outputted  = true;
                $this->output_result = null;
            }
        } else {
            return new OutputFailureException( \sprintf( 'Instance of %s has been outputted already', __CLASS__ ) );
        }

        return $this->output_result;
    }

    // endregion
}