<?php

declare(strict_types=1);

namespace App\State;

use ApiPlatform\Metadata\Operation;
use ApiPlatform\State\ProcessorInterface;
use App\ApiResource\ManagedApplication;
use Symfony\Component\DependencyInjection\Attribute\Autowire;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

final readonly class MaintenanceToggleProcessor implements ProcessorInterface
{
    /**
     * @param list<array{name: string, slug: string, maintenance_path: string}> $managedApplications
     */
    public function __construct(
        #[Autowire('%app.managed_applications%')]
        private array $managedApplications,
    ) {}

    /**
     * @param ManagedApplication $data
     */
    public function process(mixed $data, Operation $operation, array $uriVariables = [], array $context = []): ManagedApplication
    {
        $slug = $uriVariables['slug'] ?? '';
        $appConfig = null;

        foreach ($this->managedApplications as $app) {
            if ($app['slug'] === $slug) {
                $appConfig = $app;
                break;
            }
        }

        if (null === $appConfig) {
            throw new NotFoundHttpException(sprintf('Application "%s" not found.', $slug));
        }

        $maintenancePath = $appConfig['maintenance_path'];

        if ($data->maintenance) {
            $directory = dirname($maintenancePath);

            if (!is_dir($directory)) {
                mkdir($directory, 0755, true);
            }

            touch($maintenancePath);
        } elseif (file_exists($maintenancePath)) {
            unlink($maintenancePath);
        }

        $dto              = new ManagedApplication();
        $dto->slug        = $appConfig['slug'];
        $dto->name        = $appConfig['name'];
        $dto->maintenance = file_exists($maintenancePath);

        return $dto;
    }
}