<?php

namespace Brandy\Admin\PostEditor\MetaServices;

use Brandy\Abstracts\AbstractPostMetaService;
use Brandy\Admin\PostEditor\PostMetaServices;
use Brandy\Traits\SingletonTrait;

class ContainerMaxWidthMetaService extends AbstractPostMetaService {

	use SingletonTrait;

	public const META_NAME = '_brandy_container_max_width';

	protected function __construct() {
		add_filter( 'block_editor_settings_all', array( $this, 'register_block_editor_setting' ) );
	}

	public static function get_default_value() {
		return array(
			'type'  => 'inherit',
			'value' => 1500,
		);
	}

	public function register_meta() {
		$args = array(
			'show_in_rest'  => array(
				'schema' => array(
					'type'       => 'object',
					'properties' => array(
						'type'  => array(
							'type' => 'string',
						),
						'value' => array(
							'type' => 'number',
						),
					),
				),
			),
			'single'        => true,
			'type'          => 'object',
			'default'       => self::get_default_value(),
			'auth_callback' => '__return_true',
		);

		foreach ( array( 'post', 'page' ) as $post_type ) {
			register_post_meta(
				$post_type,
				self::META_NAME,
				$args
			);
		}
	}

	public static function is_valid_meta_value( $meta_value ) {
		if ( ! isset( $meta_value['type'] ) || ! in_array( $meta_value['type'], array( 'inherit', 'custom', 'unset' ), true ) ) {
			return false;
		}
		if ( ! isset( $meta_value['value'] ) || ! is_numeric( $meta_value['value'] ) ) {
			return false;
		}
		return true;
	}

	public function register_block_editor_setting( $editor_settings ) {
		$editor_settings['styles'][] = array(
			'css'    => 'body{' . PostMetaServices::map_array_to_css( self::get_css_array() ) . '}',
			'author' => 'brandy',
			'type'   => 'post_container_layout',
		);
		return $editor_settings;
	}

	public static function get_css_array() {
		$current_post_id = brandy_get_current_page_id();
		if ( empty( $current_post_id ) ) {
			return array();
		}

		$container_max_width = self::get_value( $current_post_id );

		$styles = array();

		if ( isset( $container_max_width['type'] ) && 'custom' === $container_max_width['type'] ) {
			$styles['--theme-container-max-width'] = ( empty( $container_max_width['value'] ) ? 'unset' : ( $container_max_width['value'] . 'px' ) );
		}

		if ( isset( $container_max_width['type'] ) && 'unset' === $container_max_width['type'] ) {
			$styles['--theme-container-max-width'] = '100%';
		}

		return $styles;
	}
}