<?php

namespace App\Services;

use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;

class SiteRevalidationService
{
    /**
     * Revalidate article cache on the Next.js frontend.
     */
    public static function revalidateArticle(?string $slug = null): void
    {
        static::revalidate('article', $slug);
    }

    /**
     * Revalidate page cache on the Next.js frontend.
     */
    public static function revalidatePage(?string $slug = null): void
    {
        static::revalidate('page', $slug);
    }

    /**
     * Revalidate document cache on the Next.js frontend.
     */
    public static function revalidateDocument(?string $slug = null): void
    {
        static::revalidate('document', $slug);
    }

    private static function revalidate(string $type, ?string $slug = null): void
    {
        if (app()->runningUnitTests()) {
            return;
        }

        $url = config('services.nextjs.revalidate_url');
        $token = config('services.nextjs.revalidate_token');

        if (! $url || ! $token) {
            return;
        }

        try {
            $payload = ['type' => $type];
            if ($slug) {
                $payload['slug'] = $slug;
            }

            Http::timeout(5)
                ->withHeaders(['x-revalidate-token' => $token])
                ->post($url, $payload);
        } catch (\Throwable $e) {
            Log::warning("Site revalidation failed for {$type}/{$slug}: {$e->getMessage()}");
        }
    }
}