wip prettify validation error responses

Author: NeoIsRecursive

packages/router/src/HandleRouteExceptionMiddleware.php

@@ -13,6 +13,11 @@
 use Tempest\Router\Exceptions\ConvertsToResponse;
 use Tempest\Router\Exceptions\RouteBindingFailed;
 use Tempest\Validation\Exceptions\ValidationFailed;
+use Tempest\Validation\Rule;
+use Tempest\Validation\Validator;
+
+use function Tempest\get;
+use function Tempest\Support\arr;
 
 #[Priority(Priority::FRAMEWORK - 10)]
 final readonly class HandleRouteExceptionMiddleware implements HttpMiddleware
@@ -26,7 +31,9 @@ public function __invoke(Request $request, HttpMiddlewareCallable $next): Respon
         if ($this->routeConfig->throwHttpExceptions === true) {
             $response = $this->forward($request, $next);
 
-            if ($response->status->isServerError() || $response->status->isClientError()) {
+            $isValidationError = $response->status === Status::UNPROCESSABLE_CONTENT;
+
+            if (! $isValidationError && ($response->status->isServerError() || $response->status->isClientError())) {
                 throw new HttpRequestFailed(
                     request: $request,
                     status: $response->status,
@@ -61,9 +68,15 @@ private function forward(Request $request, HttpMiddlewareCallable $next): Respon
             return new NotFound();
         } catch (ValidationFailed $validationException) {
             if ($this->wantsJson($request)) {
+                $errors = arr($validationException->failingRules)->map(
+                    fn (array $failingRulesForField, string $field) => arr($failingRulesForField)->map(
+                        fn (Rule $rule) => get(Validator::class)->getErrorMessage($rule, $field),
+                    )->toArray(),
+                );
+
                 return new Json([
-                    'message' => $validationException->getMessage(),
-                    'errors' => $validationException->errorMessages,
+                    'message' => $errors->first()[0],
+                    'errors' => $errors->toArray(),
                 ])->setStatus(Status::UNPROCESSABLE_CONTENT);
             }