<?php

namespace AcademicCrew\Admin;

use AcademicCrew\Core\Loader;

/**
 * Enqueues admin CSS and JS only on AcademicCrew admin pages.
 * Never loads assets globally.
 */
class AssetLoader {

    public function register( Loader $loader ): void {
        $loader->add_action( 'admin_enqueue_scripts', $this, 'enqueue_assets' );
    }

    public function enqueue_assets( string $hook ): void {
        if ( ! $this->is_academiccrew_page( $hook ) ) {
            return;
        }

        wp_enqueue_style(
            'acc-admin',
            ACADEMICCREW_URL . 'assets/css/admin.css',
            [],
            ACADEMICCREW_VERSION
        );

        wp_enqueue_script(
            'acc-admin',
            ACADEMICCREW_URL . 'assets/js/admin.js',
            [],
            ACADEMICCREW_VERSION,
            true
        );

        wp_localize_script( 'acc-admin', 'academiccrewAdmin', [
            'ajaxUrl' => admin_url( 'admin-ajax.php' ),
            'nonce'   => wp_create_nonce( 'acc_admin' ),
            'i18n'    => [
                'currentYear'  => (int) gmdate( 'Y' ),
                'currentMonth' => (int) gmdate( 'n' ),
            ],
        ] );
    }

    private function is_academiccrew_page( string $hook ): bool {
        // Custom pages registered under academiccrew slug
        if ( str_contains( $hook, 'academiccrew' ) ) {
            return true;
        }

        // CPT list/edit screens
        global $pagenow;
        if ( in_array( $pagenow ?? '', [ 'edit.php', 'post.php', 'post-new.php' ], true ) ) {
            $post_type = sanitize_key( $_GET['post_type'] ?? '' );
            // post.php?post=123&action=edit carries no post_type param — resolve from post ID
            if ( ! $post_type && ! empty( $_GET['post'] ) ) {
                $post_type = (string) get_post_type( absint( $_GET['post'] ) );
            }
            if ( $post_type && (
                str_starts_with( $post_type, 'academiccrew_' ) ||
                $post_type === 'acc_collaboration'
            ) ) {
                return true;
            }
        }

        return false;
    }
}