added error code return

Author: mxritzdev

LinkRouter/App/Configuration/Config.cs

@@ -102,4 +102,6 @@ public void CompileRoutes()
         CompiledRoutes = compiledRoutes
             .ToArray();
     }
+    
+    [JsonIgnore] public static Regex ErrorCodePattern = new(@"\s*\-\>\s*(\d+)\s*$", RegexOptions.Compiled | RegexOptions.CultureInvariant);
 }

LinkRouter/App/Http/Controllers/RedirectController.cs

@@ -10,7 +10,6 @@ public class RedirectController : Controller
 {
 
     private readonly Config Config;
-    
 
     private readonly Counter RouteCounter = Metrics.CreateCounter(
         "linkrouter_requests",
@@ -39,7 +38,6 @@ public RedirectController(Config config)
     [HttpGet("/{*path}")]
     public async Task<ActionResult> RedirectToExternalUrl(string path)
     {
-        
         if (!path.EndsWith("/"))
             path += "/";
 
@@ -65,6 +63,13 @@ public async Task<ActionResult> RedirectToExternalUrl(string path)
 
         string redirectUrl = redirectRoute.RedirectUrl;
 
+        if (Config.ErrorCodePattern.IsMatch(redirectUrl))
+        {
+            var errorCodeMatch = Config.ErrorCodePattern.Match(redirectUrl);
+            var errorCode = int.Parse(errorCodeMatch.Groups[1].Value);
+            return StatusCode(errorCode);
+        }
+        
         foreach (var placeholder in redirectRoute.Placeholders)
         {
             var value = match.Groups[placeholder.Value].Value;