<?php
/**
 * Schema module.
 *
 * @package ElevenRank
 * @since   1.0.0
 */

namespace ElevenRank\Modules\Schema;

use ElevenRank\Capabilities;
use ElevenRank\Modules\Breadcrumbs\Breadcrumb_Trail;
use ElevenRank\Modules\Meta\Resolver;
use ElevenRank\Modules\Meta\Variable_Parser;
use ElevenRank\Module;
use ElevenRank\Output_Gate;
use ElevenRank\REST\Schema_Controller;
use ElevenRank\Settings;

defined( 'ABSPATH' ) || exit;

/**
 * Structured data: one JSON-LD graph per page.
 *
 * @since 1.0.0
 */
final class Schema_Module implements Module {

	/**
	 * Settings store.
	 *
	 * @since 1.0.0
	 *
	 * @var Settings
	 */
	private $settings;

	/**
	 * Output gate.
	 *
	 * @since 1.0.0
	 *
	 * @var Output_Gate
	 */
	private $gate;

	/**
	 * Graph builder.
	 *
	 * @since 1.0.0
	 *
	 * @var Graph_Builder
	 */
	private $builder;

	/**
	 * Constructor.
	 *
	 * @since 1.0.0
	 *
	 * @param Settings    $settings Settings store.
	 * @param Output_Gate $gate     Output gate.
	 */
	public function __construct( Settings $settings, Output_Gate $gate ) {
		$this->settings = $settings;
		$this->gate     = $gate;
		$this->builder  = new Graph_Builder( $settings, new Resolver( $settings, new Variable_Parser() ), new Breadcrumb_Trail( $settings ) );
	}

	/**
	 * Module id.
	 *
	 * @since 1.0.0
	 *
	 * @return string
	 */
	public function id(): string {
		return 'schema';
	}

	/**
	 * Module name.
	 *
	 * @since 1.0.0
	 *
	 * @return string
	 */
	public function label(): string {
		return __( 'Schema markup', 'elevenrank' );
	}

	/**
	 * Registers the module's hooks.
	 *
	 * @since 1.0.0
	 *
	 * @return void
	 */
	public function boot(): void {
		add_action( 'rest_api_init', array( $this, 'register_routes' ) );
		add_filter( 'elevenrank_editor_config', array( $this, 'editor_config' ) );

		if ( $this->gate->is_active() ) {
			( new Schema_Output( $this->builder ) )->hooks();
		}
	}

	/**
	 * Registers the REST route used by the editor.
	 *
	 * @since 1.0.0
	 *
	 * @return void
	 */
	public function register_routes(): void {
		( new Schema_Controller( $this->builder ) )->register_routes();
	}

	/**
	 * Gives the editor the types, their fields and the default of each post type.
	 *
	 * @since 1.0.0
	 *
	 * @param mixed $config Editor configuration.
	 * @return mixed
	 */
	public function editor_config( $config ) {
		if ( ! is_array( $config ) || ! current_user_can( Capabilities::EDIT_POST_ADVANCED ) ) {
			return $config;
		}

		$defaults = array();

		foreach ( isset( $config['postTypes'] ) && is_array( $config['postTypes'] ) ? $config['postTypes'] : array() as $post_type ) {
			$defaults[ (string) $post_type ] = Schema_Fields::default_type( (string) $post_type, $this->settings );
		}

		$config['schema'] = array(
			'types'    => Type_Definitions::describe(),
			'defaults' => $defaults,
		);

		return $config;
	}
}