<?php
/**
 * FAQ post meta registration.
 *
 * @package AccordionFaq
 */

namespace AccordionFaq\Setup;

defined( 'ABSPATH' ) || exit;

/**
 * Class Meta
 *
 * Registers first-class, REST-exposed per-FAQ meta (no serialized blobs).
 */
class Meta {

	const META_ORDER   = '_afaq_order';
	const META_OPEN    = '_afaq_default_open';
	const META_ICON    = '_afaq_icon';

	/**
	 * Register hooks.
	 *
	 * @return void
	 */
	public function register() {
		add_action( 'init', array( $this, 'register_meta' ), 6 );
	}

	/**
	 * Auth callback for editing meta.
	 *
	 * @param bool   $allowed   Whether editing is allowed.
	 * @param string $meta_key  Meta key.
	 * @param int    $object_id Object ID.
	 * @return bool
	 */
	public function auth( $allowed, $meta_key, $object_id ) {
		return current_user_can( 'edit_post', $object_id );
	}

	/**
	 * Register the meta fields.
	 *
	 * @return void
	 */
	public function register_meta() {
		register_post_meta(
			PostType::POST_TYPE,
			self::META_ORDER,
			array(
				'type'              => 'integer',
				'single'            => true,
				'default'           => 0,
				'show_in_rest'      => true,
				'sanitize_callback' => 'absint',
				'auth_callback'     => array( $this, 'auth' ),
			)
		);

		register_post_meta(
			PostType::POST_TYPE,
			self::META_OPEN,
			array(
				'type'              => 'boolean',
				'single'            => true,
				'default'           => false,
				'show_in_rest'      => true,
				'sanitize_callback' => 'rest_sanitize_boolean',
				'auth_callback'     => array( $this, 'auth' ),
			)
		);

		register_post_meta(
			PostType::POST_TYPE,
			self::META_ICON,
			array(
				'type'              => 'string',
				'single'            => true,
				'default'           => '',
				'show_in_rest'      => true,
				'sanitize_callback' => 'sanitize_text_field',
				'auth_callback'     => array( $this, 'auth' ),
			)
		);
	}
}