inject rating tag into post.tag_string

main.py

@@ -194,7 +194,21 @@ async def fetch_post(ctx, md5) -> Optional[dict]:
     if not rows:
         return None
     assert len(rows) == 1
-    return json.loads(rows[0][0])
+    post = json.loads(rows[0][0])
+    post_rating = post["rating"]
+    match post_rating:
+        case "g":
+            rating_tag = "general"
+        case "s":
+            rating_tag = "sensitive"
+        case "q":
+            rating_tag = "questionable"
+        case "e":
+            rating_tag = "explicit"
+        case _:
+            raise AssertionError("invalid post rating {post_rating!r}")
+    post["tag_string"] = post["tag_string"] + " " + rating_tag
+    return post
 
 
 async def insert_post(ctx, post):