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<?php
namespace Inertia;
use Closure;
use Illuminate\Http\Request;
use Symfony\Component\HttpFoundation\Response;
class Middleware
{
/**
* The root template that's loaded on the first page visit.
*
* @see https://inertiajs.com/server-side-setup#root-template
* @var string
*/
protected $rootView = 'app';
/**
* Determines the current asset version.
*
* @see https://inertiajs.com/asset-versioning
* @param \Illuminate\Http\Request $request
* @return string|null
*/
public function version(Request $request)
{
if (config('app.asset_url')) {
return md5(config('app.asset_url'));
}
if (file_exists($manifest = public_path('mix-manifest.json'))) {
return md5_file($manifest);
}
}
/**
* Defines the props that are shared by default.
*
* @see https://inertiajs.com/shared-data
* @param \Illuminate\Http\Request $request
* @return array
*/
public function share(Request $request)
{
return [
'errors' => function () use ($request) {
return $this->resolveValidationErrors($request);
},
];
}
/**
* Sets the root template that's loaded on the first page visit.
*
* @see https://inertiajs.com/server-side-setup#root-template
* @param Request $request
* @return string
*/
public function rootView(Request $request)
{
return $this->rootView;
}
/**
* Handle the incoming request.
*
* @param \Illuminate\Http\Request $request
* @param Closure $next
* @return Response
*/
public function handle(Request $request, Closure $next)
{
Inertia::version(function () use ($request) {
return $this->version($request);
});
Inertia::share($this->share($request));
Inertia::setRootView($this->rootView($request));
$response = $next($request);
$response = $this->checkVersion($request, $response);
$response = $this->changeRedirectCode($request, $response);
return $response;
}
/**
* In the event that the assets change, initiate a
* client-side location visit to force an update.
*
* @param Request $request
* @param Response $response
* @return Response
*/
public function checkVersion(Request $request, Response $response)
{
if ($request->header('X-Inertia') &&
$request->method() === 'GET' &&
$request->header('X-Inertia-Version', '') !== Inertia::getVersion()
) {
if ($request->hasSession()) {
$request->session()->reflash();
}
return Inertia::location($request->fullUrl());
}
return $response;
}
/**
* Changes the status code during redirects, ensuring they are made as
* GET requests, preventing "MethodNotAllowedHttpException" errors.
*
* @param Request $request
* @param Response $response
* @return Response
*/
public function changeRedirectCode(Request $request, Response $response)
{
if ($request->header('X-Inertia') &&
$response->getStatusCode() === 302 &&
in_array($request->method(), ['PUT', 'PATCH', 'DELETE'])
) {
$response->setStatusCode(303);
}
return $response;
}
/**
* Resolves and prepares validation errors in such
* a way that they are easier to use client-side.
*
* @param Request $request
* @return object
*/
public function resolveValidationErrors(Request $request)
{
if (! $request->session()->has('errors')) {
return (object) [];
}
return (object) collect($request->session()->get('errors')->getBags())->map(function ($bag) {
return (object) collect($bag->messages())->map(function ($errors) {
return $errors[0];
})->toArray();
})->pipe(function ($bags) use ($request) {
if ($bags->has('default') && $request->header('x-inertia-error-bag')) {
return [$request->header('x-inertia-error-bag') => $bags->get('default')];
} elseif ($bags->has('default')) {
return $bags->get('default');
} else {
return $bags->toArray();
}
});
}
}