fix: detect existng comments better

Author: kamil-keycard

scripts/pr_comment.py

@@ -47,20 +47,31 @@ def get_existing_comment_id(pr_number: int) -> str | None:
     exit_code, stdout, stderr = run_command(cmd)
 
     if exit_code != 0:
-        raise Exception(f"Failed to get PR comments: {stderr}")
+        print(f"Warning: Failed to get PR comments: {stderr}")
+        return None
 
     try:
         pr_data = json.loads(stdout)
         comments = pr_data.get("comments", [])
 
         # Look for comments with our signature
-        for comment in comments:
-            if "This comment was automatically generated by the release preview workflow" in comment.get("body", ""):
-                return comment.get("id")
+        signature = "This comment was automatically generated by the release preview workflow"
 
+        for comment in comments:
+            comment_body = comment.get("body", "")
+            # Also check for release preview header as backup
+            if (signature in comment_body or
+                "📦 Release Preview" in comment_body):
+                comment_id = comment.get("id")
+                if comment_id:
+                    print(f"Found existing comment with ID: {comment_id}")
+                    return str(comment_id)
+
+        print("No existing release preview comment found")
         return None
     except json.JSONDecodeError as e:
-        raise Exception(f"Failed to parse PR comments JSON: {e}") from e
+        print(f"Warning: Failed to parse PR comments JSON: {e}")
+        return None
 
 
 def get_release_preview() -> str:
@@ -135,18 +146,31 @@ def create_or_update_comment(pr_number: int, comment_body: str) -> None:
         existing_comment_id = get_existing_comment_id(pr_number)
 
         if existing_comment_id:
-            # Update existing comment
+            print(f"Found existing comment {existing_comment_id}, attempting to update...")
+
+            # Try to update existing comment
             cmd = ["gh", "api", f"repos/{{owner}}/{{repo}}/issues/comments/{existing_comment_id}",
                    "--method", "PATCH", "--field", f"body=@{temp_file}"]
 
             exit_code, stdout, stderr = run_command(cmd)
 
             if exit_code != 0:
-                raise Exception(f"Failed to update comment: {stderr}")
+                print(f"Failed to update existing comment (it may have been deleted): {stderr}")
+                print("Creating new comment instead...")
+
+                # Fall back to creating a new comment
+                cmd = ["gh", "pr", "comment", str(pr_number), "--body-file", temp_file]
+                exit_code, stdout, stderr = run_command(cmd)
+
+                if exit_code != 0:
+                    raise Exception(f"Failed to create comment: {stderr}")
 
-            print(f"Updated existing comment {existing_comment_id}")
+                print("Created new comment")
+            else:
+                print(f"Updated existing comment {existing_comment_id}")
         else:
             # Create new comment using gh pr comment
+            print("No existing comment found, creating new comment...")
             cmd = ["gh", "pr", "comment", str(pr_number), "--body-file", temp_file]
 
             exit_code, stdout, stderr = run_command(cmd)