[fix]. Reply on unsupported @codex commands

src/gitea_codex_bot/main.py

@@ -17,7 +17,7 @@ from sqlalchemy.orm import Session
 from gitea_codex_bot.config import Settings, get_settings
 from gitea_codex_bot.db import get_session
 from gitea_codex_bot.models import JobStatus, ReviewJob
-from gitea_codex_bot.services.commands import parse_command
+from gitea_codex_bot.services.commands import detect_prefixed_command, parse_command
 from gitea_codex_bot.services.gitea import GiteaClient
 from gitea_codex_bot.services.jobs import cooldown_remaining_seconds, enqueue_job, persist_webhook_event
 from gitea_codex_bot.services.repo_config import RepoReviewConfig, parse_repo_review_config_text
@@ -421,9 +421,31 @@ async def gitea_webhook(
     if sender_username == settings.gitea_bot_username:
         return {"accepted": False, "reason": "bot comment ignored"}
 
+    if repo not in settings.allowed_repo_set:
+        logger.info(
+            "Webhook ignored: repo not in ALLOWED_REPOS repo=%s pr=%s comment_id=%s sender=%s",
+            repo,
+            pr_number,
+            comment_id,
+            sender_username,
+        )
+        return {"accepted": False, "reason": "repo not allowed"}
+
     comment_body = str(payload.get("comment", {}).get("body", "")).strip()
     parsed_command = parse_command(comment_body, aliases=settings.bot_command_aliases)
     if not parsed_command:
+        attempted_command = detect_prefixed_command(comment_body, aliases=settings.bot_command_aliases)
+        if attempted_command:
+            gitea = GiteaClient(settings)
+            if attempted_command == "fix":
+                gitea.post_issue_comment(repo, pr_number, "⚠️ `@codex fix` is no longer supported on this bot.")
+                return {"accepted": False, "reason": "unsupported command", "command": attempted_command}
+            gitea.post_issue_comment(
+                repo,
+                pr_number,
+                f"⚠️ Command `@codex {attempted_command}` is not supported. Try `@codex -h`.",
+            )
+            return {"accepted": False, "reason": "unsupported command", "command": attempted_command}
         logger.info(
             "Webhook ignored: no @codex review command repo=%s pr=%s comment_id=%s sender=%s",
             repo,
@@ -442,16 +464,6 @@ async def gitea_webhook(
             parsed_command.name,
         )
 
-    if repo not in settings.allowed_repo_set:
-        logger.info(
-            "Webhook ignored: repo not in ALLOWED_REPOS repo=%s pr=%s comment_id=%s sender=%s",
-            repo,
-            pr_number,
-            comment_id,
-            sender_username,
-        )
-        return {"accepted": False, "reason": "repo not allowed"}
-
     inserted = persist_webhook_event(
         session,
         delivery_id=x_gitea_delivery,

src/gitea_codex_bot/services/commands.py

@@ -10,6 +10,21 @@ HELP_ALIASES = {"-h", "--help", "help"}
 SUPPORTED_COMMANDS = {"review", "explain", "ignore", "rerun"}
 
 
+def detect_prefixed_command(body: str, aliases: Iterable[str] | None = None) -> str | None:
+    stripped = body.strip()
+    match = PREFIX_RE.match(stripped)
+    if not match:
+        return None
+    command_alias = match.group(1).lstrip("@").lower()
+    allowed_aliases = {alias.lstrip("@").lower() for alias in (aliases or {"codex"})}
+    if command_alias not in allowed_aliases:
+        return None
+    remainder = match.group(2).strip()
+    if not remainder:
+        return None
+    return remainder.split(maxsplit=1)[0].lower()
+
+
 def parse_command(body: str, aliases: Iterable[str] | None = None) -> ParsedCommand | None:
     stripped = body.strip()
     match = PREFIX_RE.match(stripped)