<?php

namespace AKSRT\WidgetSystem;

defined('ABSPATH') || exit;

/**
 * Lazy widget form endpoint and admin-only assets.
 */
final class AdminFormController {
	public const AJAX_ACTION = 'aksrt_widget_form';
	private const NONCE_ACTION = 'aksrt_widget_form';

	public static function register_hooks(): void {
		add_action('wp_ajax_' . self::AJAX_ACTION, [self::class, 'ajax_form']);
		add_action('admin_enqueue_scripts', [self::class, 'enqueue']);
		add_action('customize_controls_enqueue_scripts', [self::class, 'enqueue']);
	}

	public static function enqueue(): void {
		$screen = function_exists('get_current_screen') ? get_current_screen() : null;
		$is_customizer = current_filter() === 'customize_controls_enqueue_scripts';
		if (!$is_customizer && (!$screen || !in_array($screen->id, ['widgets', 'customize'], true))) {
			return;
		}
		wp_enqueue_media();
		wp_enqueue_style('wp-color-picker');
		wp_enqueue_script('jquery-ui-sortable');
		wp_enqueue_style('aksrt-widget-admin', AKSRT_URI . '/assets/widgets/admin.css', ['wp-color-picker'], AKSRT_VERSION);
		wp_enqueue_style('aksrt-widget-preview', AKSRT_URI . '/assets/widgets/frontend.css', [], AKSRT_VERSION);
		wp_enqueue_script('aksrt-widget-admin-core', AKSRT_URI . '/assets/widgets/admin-core.js', [], AKSRT_VERSION, true);
		wp_enqueue_script('aksrt-widget-admin', AKSRT_URI . '/assets/widgets/admin.js', ['jquery', 'jquery-ui-sortable', 'wp-color-picker', 'aksrt-widget-admin-core'], AKSRT_VERSION, true);
		wp_localize_script('aksrt-widget-admin', 'aksrtWidgetAdmin', [
			'ajaxUrl' => admin_url('admin-ajax.php'),
			'action'  => self::AJAX_ACTION,
			'nonce'   => wp_create_nonce(self::NONCE_ACTION),
			'transferNonce' => wp_create_nonce('aksrt_widgets_transfer'),
			'i18n'    => [
				'loading' => __('正在加载模块配置…', 'aksrt'),
				'error'   => __('加载失败，请重试。', 'aksrt'),
			],
		]);
	}

	public static function ajax_form(): void {
		check_ajax_referer(self::NONCE_ACTION, 'nonce');
		if (!current_user_can('edit_theme_options')) {
			wp_send_json_error(['message' => __('权限不足。', 'aksrt')], 403);
		}

		$id_base = isset($_POST['id_base']) ? sanitize_key(wp_unslash($_POST['id_base'])) : '';
		$number  = isset($_POST['widget_number']) ? absint($_POST['widget_number']) : 0;
		$definition = WidgetRegistry::get_by_id_base($id_base);
		if (!$definition || $number < 1) {
			wp_send_json_error(['message' => __('无效的小工具实例。', 'aksrt')], 400);
		}

		$widget = new SchemaWidget($definition);
		$widget->_set($number);
		$settings = $widget->get_settings();
		$instance = isset($settings[$number]) && is_array($settings[$number]) ? $settings[$number] : [];
		ob_start();
		$widget->render_full_form($instance);
		$html = (string) ob_get_clean();
		wp_send_json_success(['html' => $html]);
	}
}