move api rate limit to app config, add fallback for empty env key

* feat: make API rate limits configurable via env vars

app/Providers/RouteServiceProvider.php

@@ -33,8 +33,8 @@ class RouteServiceProvider extends ServiceProvider
             }
 
             return $request->user()
-                ? Limit::perMinute(200)->by($request->user()->id)
-                : Limit::perMinute(60)->by($request->ip());
+                ? Limit::perMinute(config('app.api_rate_limit_authenticated_per_minute'))->by($request->user()->id)
+                : Limit::perMinute(config('app.api_rate_limit_guest_per_minute'))->by($request->ip());
         });
 
         $this->routes(function (): void {

config/app.php

@@ -158,6 +158,21 @@ return [
 
     'pagination_per_page_default' => (int) env('PAGINATION_PER_PAGE_DEFAULT', 15),
 
+    /*
+    |--------------------------------------------------------------------------
+    | API Rate Limiting
+    |--------------------------------------------------------------------------
+    |
+    | The number of API requests allowed per minute, counted per user for
+    | authenticated requests and per IP address for guest requests. These
+    | limits are only enforced when the application runs in production.
+    |
+    */
+
+    'api_rate_limit_authenticated_per_minute' => (int) (env('API_RATE_LIMIT_AUTH_PER_MINUTE') ?: 200),
+
+    'api_rate_limit_guest_per_minute' => (int) (env('API_RATE_LIMIT_GUEST_PER_MINUTE') ?: 60),
+
     /*
     |--------------------------------------------------------------------------
     | Encryption Key