feat: refactor payload validation in GenerateCommentAction and WebhookService

Author: tanhongit

src/Actions/GenerateCommentAction.php

@@ -45,7 +45,7 @@ public function __invoke(Request $request, bool $validate = true): JsonResponse
             }
 
             if ($validate) {
-                $validationResponse = $this->webhookService->validatePayload($payload);
+                $validationResponse = $this->webhookService->validatePayloadForComment($payload);
                 if ($validationResponse !== null) {
                     return $validationResponse;
                 }

src/Services/WebhookService.php

@@ -57,14 +57,23 @@ protected function createErrorResponse(string $message, int $statusCode = 400):
      */
     public function validatePayload(array $payload): ?JsonResponse
     {
-        if (!$this->isActionPresent($payload)) {
-            return $this->createErrorResponse('github-project::github-project.error.event.action_not_found', 404);
+        if ($this->validatePayloadForComment($payload) !== null) {
+            return $this->validatePayloadForComment($payload);
         }
 
         if (!$this->isStatusCommentEnabled($payload)) {
             return $this->createErrorResponse('github-project::github-project.error.event.status_comment_disabled');
         }
 
+        return null;
+    }
+
+    public function validatePayloadForComment(array $payload): ?JsonResponse
+    {
+        if (!$this->isActionPresent($payload)) {
+            return $this->createErrorResponse('github-project::github-project.error.event.action_not_found', 404);
+        }
+
         if (!$this->hasValidNodeAndFieldData($payload)) {
             return $this->createErrorResponse('github-project::github-project.error.event.missing_fields');
         }