<?php
declare(strict_types=1);

namespace ROITheme\Shared\Infrastructure\Wordpress;

use ROITheme\Shared\Infrastructure\Di\DIContainer;
use ROITheme\Shared\Application\UseCases\RenderPostGrid\RenderPostGridRequest;

/**
 * Registra el shortcode [roi_post_grid] en WordPress
 *
 * RESPONSABILIDAD:
 * - Registrar shortcode via add_shortcode
 * - Sanitizar atributos del shortcode
 * - Delegar ejecucion a RenderPostGridUseCase
 *
 * NO RESPONSABLE DE:
 * - Logica de negocio
 * - Construccion de queries
 * - Generacion de HTML/CSS
 *
 * @package ROITheme\Shared\Infrastructure\Wordpress
 */
final class PostGridShortcodeRegistrar
{
    private const SHORTCODE_TAG = 'roi_post_grid';

    /**
     * Registra el shortcode en WordPress
     */
    public static function register(): void
    {
        add_shortcode(self::SHORTCODE_TAG, [new self(), 'handleShortcode']);
    }

    /**
     * Callback del shortcode
     *
     * @param array|string $atts Atributos del shortcode
     * @return string HTML del grid
     */
    public function handleShortcode($atts): string
    {
        $atts = $this->sanitizeAttributes($atts);

        // Obtener paged desde query var si existe
        $id = $atts['id'] ?? '';
        $queryVar = !empty($id) ? "paged_{$id}" : 'paged';
        $atts['paged'] = max(1, (int) get_query_var($queryVar, 1));

        // Crear request DTO
        $request = RenderPostGridRequest::fromArray($atts);

        // Obtener UseCase desde DIContainer
        $container = DIContainer::getInstance();
        $useCase = $container->getRenderPostGridUseCase();

        return $useCase->execute($request);
    }

    /**
     * Sanitiza atributos del shortcode
     *
     * @param array|string $atts
     * @return array<string, mixed>
     */
    private function sanitizeAttributes($atts): array
    {
        $atts = shortcode_atts([
            'category' => '',
            'exclude_category' => '',
            'tag' => '',
            'author' => '',
            'posts_per_page' => '9',
            'columns' => '3',
            'orderby' => 'date',
            'order' => 'DESC',
            'show_pagination' => 'false',
            'offset' => '0',
            'exclude_posts' => '',
            'show_thumbnail' => 'true',
            'show_excerpt' => 'true',
            'show_meta' => 'true',
            'show_categories' => 'true',
            'excerpt_length' => '20',
            'class' => '',
            'id' => '',
        ], $atts, self::SHORTCODE_TAG);

        // Sanitizar cada valor
        return array_map(function ($value) {
            return is_string($value) ? sanitize_text_field($value) : $value;
        }, $atts);
    }
}