laravel-shield / shield

<?php

namespace Shield\Shield;

use Illuminate\Support\Arr;

use Shield\Shield\Contracts\Service;

use Shield\Shield\Exceptions\UnknownServiceException;

use Closure;

use Illuminate\Http\Request;

use Shield\Shield\Exceptions\UnsupportedDriverException;

class Manager

{

    public function passes(string $service, Request $request): bool

    {

        /** @var Service $instance */

        $instance = $this->validate($service);

        if ($this->checkHeaders($instance->headers(), $request)) {

            return $instance->verify($request, collect(config('shield.services.' . $service . '.options', [])));

        }

        return false;

    }

    /**

     * @param string $service

     *

     * @return Service

     */

    protected function validate(string $service)

    {

        throw_unless(Arr::exists(config('shield.services'), $service), UnknownServiceException::class, sprintf('Service [%s] not found.', $service));

        throw_unless(Arr::exists(config('shield.services.' . $service), 'driver'), UnknownServiceException::class, sprintf('Service [%s] must have a driver.', $service));

        $service = app(config('shield.services.' . $service . '.driver'));

        throw_unless($service instanceof Service, UnsupportedDriverException::class, sprintf('Driver [%s] must implement [%s].', get_class($service), Service::class));

        return $service;

    }

    public function checkHeaders(array $headers, Request $request)

    {

        foreach ($headers as $header) {

            if (!$request->hasHeader($header)) return false;

        }

        return true;

    }

}