Sindbad~EG File Manager

<?php

/**
 * LP Admin Metabox
 *
 * @author Nhamdv
 * @version 4.0.0
 */
abstract class LP_Meta_Box {

	private static $saved_meta_boxes = false;

	public $post_type = LP_COURSE_CPT;

	/**
	 * LP_Meta_Box constructor.
	 */
	public function __construct() {
		$this->includes();

		// @since 4.0.0
		add_action( 'add_meta_boxes', array( $this, 'add_meta_box' ) );
		// @since 4.2.7
		add_action( 'add_meta_boxes', array( $this, '_do_add_meta_boxes' ), 10, 2 );
		add_action( 'save_post', array( $this, 'save_meta_boxes' ), 100, 2 );
		add_action( 'learnpress_save_' . $this->post_type . '_metabox', array( $this, 'save' ) );

		//add_action( 'learnpress_save_lp_course_metabox', 'LP_Meta_Box_Course::save_eduma_child_metabox_v3', 10 );
	}

	// Include fields.
	public function includes() {
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/class-lp-meta-box-fields.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/text.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/duration.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/checkbox.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/textarea.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/file.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/radio.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/select.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/extra.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/extra-faq.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/date.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/wysiwyg.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/repeater.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/autocomplete.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/fields/materials.php';
		include_once LP_PLUGIN_PATH . 'inc/admin/views/meta-boxes/lp-meta-box-functions.php';
	}

	public function add_meta_box() {
		// Implement from child
	}

	/**
	 * Handle call method add meta boxes
	 *
	 * @param $post_type
	 * @param $post
	 *
	 * @return void
	 * @since 4.2.7
	 */
	final function _do_add_meta_boxes( $post_type, $post ) {
		if ( $post_type !== $this->post_type ) {
			return;
		}

		$this->add_meta_boxes( $post );
	}

	/**
	 * Method for add meta boxes
	 *
	 * @param $post
	 *
	 * @return void
	 * @since 4.2.7
	 */
	public function add_meta_boxes( $post ) {
		// Implement from child
	}


	public function metabox( $post_id ) {
		return array();
	}

	public function output( $post ) {
		wp_nonce_field( 'learnpress_save_meta_box', 'learnpress_meta_box_nonce' );
	}

	public function save( $post_id ) {
		if ( ! empty( $this->metabox( $post_id ) ) ) {
			foreach ( $this->metabox( $post_id ) as $key => $object ) {
				if ( is_a( $object, 'LP_Meta_Box_Field' ) ) {
					$object->id = $key;
					$object->save( $post_id );
				}
			}
		}
	}

	/**
	 * @param id      $post_id
	 * @param WP_Post $post
	 */
	public function save_meta_boxes( $post_id = 0, $post = null ) {
		$post_id = absint( $post_id );

		if ( empty( $post_id ) || empty( $post ) || self::$saved_meta_boxes ) {
			return;
		}

		if ( empty( $_POST['learnpress_meta_box_nonce'] ) || ! wp_verify_nonce( wp_unslash( $_POST['learnpress_meta_box_nonce'] ), 'learnpress_save_meta_box' ) ) {
			return;
		}

		if ( empty( $_POST['post_ID'] ) || absint( $_POST['post_ID'] ) !== $post_id ) {
			return;
		}

		if ( ! current_user_can( 'edit_post', $post_id ) ) {
			return;
		}

		self::$saved_meta_boxes = true;

		//TODO: Not apply for course,
		// but on theme custom fields course is using this hook. Need change how to hook on theme.
		/*if ( $post->post_type === LP_COURSE_CPT ) {
			return;
		}*/
		do_action( 'learnpress_save_' . $post->post_type . '_metabox', $post_id, $post );
	}
}