<?php
/**
 * Article post type.
 *
 * @package KarmaDocs
 */

namespace KarmaDocs;

defined( 'ABSPATH' ) || exit;

/**
 * Registers the hierarchical `kdocs_article` post type.
 */
class PostTypes {

	const ARTICLE = 'kdocs_article';

	/**
	 * Hooks.
	 */
	public function register() {
		add_action( 'init', array( $this, 'register_post_type' ), 5 );
		add_action( 'init', array( $this, 'register_meta' ), 6 );
	}

	/**
	 * Registers the CPT. Rewrites are handled by {@see Rewrites}.
	 */
	public function register_post_type() {
		$labels = array(
			'name'               => __( 'Articles', 'karma-docs' ),
			'singular_name'      => __( 'Article', 'karma-docs' ),
			'menu_name'          => __( 'Docs', 'karma-docs' ),
			'all_items'          => __( 'All Articles', 'karma-docs' ),
			'add_new'            => __( 'Add Article', 'karma-docs' ),
			'add_new_item'       => __( 'Add New Article', 'karma-docs' ),
			'edit_item'          => __( 'Edit Article', 'karma-docs' ),
			'new_item'           => __( 'New Article', 'karma-docs' ),
			'view_item'          => __( 'View Article', 'karma-docs' ),
			'search_items'       => __( 'Search Articles', 'karma-docs' ),
			'not_found'          => __( 'No articles found.', 'karma-docs' ),
			'not_found_in_trash' => __( 'No articles found in Trash.', 'karma-docs' ),
			'parent_item_colon'  => __( 'Parent Article:', 'karma-docs' ),
		);

		$supports = array( 'title', 'editor', 'excerpt', 'author', 'thumbnail', 'revisions', 'page-attributes', 'custom-fields' );
		if ( Settings::get( 'enable_comments' ) ) {
			$supports[] = 'comments';
		}

		register_post_type(
			self::ARTICLE,
			array(
				'labels'          => $labels,
				'public'          => true,
				'hierarchical'    => true,
				'show_ui'         => true,
				'show_in_menu'    => 'karma-docs',
				'show_in_rest'    => true,
				'rest_base'       => 'kdocs-articles',
				'menu_icon'       => 'dashicons-book-alt',
				'supports'        => $supports,
				'has_archive'     => true,
				'rewrite'         => false,
				'query_var'       => 'kdocs_article',
				'capability_type' => 'post',
				'map_meta_cap'    => true,
				'template'        => array(),
			)
		);
	}

	/**
	 * Registers article meta exposed to REST / the block editor.
	 */
	public function register_meta() {
		$auth = static function () {
			return current_user_can( 'edit_posts' );
		};

		$fields = array(
			'_kdocs_views'           => 'integer',
			'_kdocs_helpful_yes'     => 'integer',
			'_kdocs_helpful_no'      => 'integer',
			'_kdocs_icon'            => 'string',
			'_kdocs_access'          => 'string',
			'_kdocs_roles'           => 'array',
			'_kdocs_reviewed_at'     => 'string',
			'_kdocs_hide_toc'        => 'boolean',
			'_kdocs_featured'        => 'boolean',
			'_kdocs_related'         => 'array',
			// SEO, used when no SEO plugin is active.
			'_kdocs_seo_title'       => 'string',
			'_kdocs_seo_description' => 'string',
			'_kdocs_canonical'       => 'string',
			'_kdocs_noindex'         => 'boolean',
		);

		foreach ( $fields as $key => $type ) {
			$args = array(
				'type'          => $type,
				'single'        => true,
				'show_in_rest'  => true,
				'auth_callback' => $auth,
			);
			if ( '_kdocs_icon' === $key ) {
				$args['sanitize_callback'] = array( Icons::class, 'sanitize' );
			} elseif ( '_kdocs_canonical' === $key ) {
				$args['sanitize_callback'] = 'esc_url_raw';
			} elseif ( in_array( $key, array( '_kdocs_seo_title', '_kdocs_seo_description' ), true ) ) {
				$args['sanitize_callback'] = 'sanitize_text_field';
			}
			if ( 'array' === $type ) {
				$args['show_in_rest'] = array(
					'schema' => array(
						'type'  => 'array',
						'items' => array( 'type' => '_kdocs_roles' === $key ? 'string' : 'integer' ),
					),
				);
				$args['default']      = array();
			}
			register_post_meta( self::ARTICLE, $key, $args );
		}
	}
}