<?php
/**
 * EPPRO_Theme_Builder_CPT
 *
 * Registers the eppro_hf_template Custom Post Type for
 * Header / Footer / Section templates and adds Elementor editing support.
 *
 * @package AdMoreWidgetsSuite
 * @since   1.0.0
 */

if ( ! defined( 'ABSPATH' ) ) exit;

class EPPRO_Theme_Builder_CPT {

    const POST_TYPE = 'eppro_hf_template';

    public static function init(): void {
        add_action( 'init', [ __CLASS__, 'register' ] );
        add_action( 'init', [ __CLASS__, 'maybe_flush' ], 99 );
        add_action( 'template_redirect', [ __CLASS__, 'block_direct_access' ] );
        // Register CPT support with Elementor via option filter (no permanent option write).
        add_filter( 'option_elementor_cpt_support', [ __CLASS__, 'filter_elementor_cpt_support' ] );
        // Also when the option was never saved (get_option() skips the filter above then).
        add_filter( 'default_option_elementor_cpt_support', [ __CLASS__, 'filter_elementor_cpt_support' ] );
    }

    public static function register(): void {
        register_post_type( self::POST_TYPE, [
            'label'               => __( 'Theme Templates', 'admore-widgets-suite' ),
            'labels'              => [
                'name'          => __( 'Theme Templates', 'admore-widgets-suite' ),
                'singular_name' => __( 'Theme Template', 'admore-widgets-suite' ),
                'add_new_item'  => __( 'Add New Template', 'admore-widgets-suite' ),
                'edit_item'     => __( 'Edit Template', 'admore-widgets-suite' ),
            ],
            'public'              => false,
            'publicly_queryable'  => true,
            'exclude_from_search' => true,
            'show_ui'             => true,
            'show_in_menu'        => false,
            // Templates are rendered on the frontend by the plugin only; they
            // are not listed through the REST API.
            'show_in_rest'        => false,
            'has_archive'         => false,
            'rewrite'             => false,
            'supports'            => [ 'title', 'editor', 'elementor', 'thumbnail' ],
            'capability_type'     => 'post',
            // Headers, footers and page templates apply site-wide, so only
            // administrators may manage them (same as the Theme Builder page).
            'capabilities'        => self::capabilities(),
            'map_meta_cap'        => true,
        ] );
    }

    /** Primitive capabilities for the template post type, all mapped to manage_options. */
    public static function capabilities(): array {
        $cap = 'manage_options';
        return [
            'edit_posts'             => $cap,
            'edit_others_posts'      => $cap,
            'edit_private_posts'     => $cap,
            'edit_published_posts'   => $cap,
            'publish_posts'          => $cap,
            'read_private_posts'     => $cap,
            'delete_posts'           => $cap,
            'delete_private_posts'   => $cap,
            'delete_published_posts' => $cap,
            'delete_others_posts'    => $cap,
            'create_posts'           => $cap,
        ];
    }

    public static function filter_elementor_cpt_support( $supported ): array {
        if ( ! is_array( $supported ) ) {
            $supported = [ 'page', 'post' ];
        }
        if ( ! in_array( self::POST_TYPE, $supported, true ) ) {
            $supported[] = self::POST_TYPE;
        }
        return $supported;
    }

    public static function maybe_flush(): void {
        if ( get_option( 'eppro_hf_cpt_flushed' ) ) return;
        flush_rewrite_rules();
        update_option( 'eppro_hf_cpt_flushed', '1' );
    }

    /**
     * Block direct frontend access — only Elementor preview and editors allowed.
     */
    public static function block_direct_access(): void {
        if ( ! is_singular( self::POST_TYPE ) ) return;
        // Covers the Elementor preview iframe too (it loads as the logged-in editor);
        // a bare "?elementor-preview" query arg is not trusted on its own.
        if ( current_user_can( 'edit_post', get_queried_object_id() ) ) return;

        global $wp_query;
        $wp_query->set_404();
        status_header( 404 );
        nocache_headers();
        include get_query_template( '404' );
        exit;
    }

    /**
     * Get all published templates of a specific type.
     *
     * @param  string $type 'header'|'footer'|'section'
     * @return \WP_Post[]
     */
    public static function get_templates_by_type( string $type ): array {
        // Few templates exist, so filter the (meta-cached) posts in PHP instead
        // of a meta_query.
        $type = sanitize_key( $type );
        return array_values( array_filter(
            get_posts( [
                'post_type'      => self::POST_TYPE,
                'post_status'    => 'publish',
                'posts_per_page' => 200,
                'orderby'        => 'title',
                'order'          => 'ASC',
            ] ),
            static fn( $post ) => get_post_meta( $post->ID, '_eppro_hf_type', true ) === $type
        ) );
    }
}