<?php

declare(strict_types=1);

namespace DigiComp\FlowMaintenanceMode\Http;

use DigiComp\FlowMaintenanceMode\AllowModules\AllowModuleInterface;
use DigiComp\FlowMaintenanceMode\MaintenanceModeActiveException;
use DigiComp\FlowMaintenanceMode\MaintenanceModeManagerInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\MiddlewareInterface;
use Psr\Http\Server\RequestHandlerInterface;

class MaintenanceModeMiddleware implements MiddlewareInterface
{
    protected MaintenanceModeManagerInterface $maintenanceModeManager;

    /**
     * @var array<array-key, AllowModuleInterface>
     */
    protected array $allowModules;

    public function __construct(
        MaintenanceModeManagerInterface $maintenanceModeManager,
        AllowModuleInterface ...$allowModules
    ) {
        $this->maintenanceModeManager = $maintenanceModeManager;
        $this->allowModules = $allowModules;
    }

    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
    {
        if ($this->maintenanceModeManager->isMaintenanceMode()) {
            foreach ($this->allowModules as $allowModule) {
                if ($allowModule->isRequestAllowed($request)) {
                    return $handler->handle($request);
                }
            }
            throw new MaintenanceModeActiveException('Maintenance is active');
        }
        return $handler->handle($request);
    }
}