fix deepdanbooru's rating tags

main.py

@@ -8,10 +8,10 @@ import asyncio
 import aiosqlite
 import base64
 import logging
-from collections import defaultdict
+from collections import defaultdict, Counter
 from pathlib import Path
 from urllib.parse import urlparse
-from typing import Any, Optional, List, Set
+from typing import Any, Optional, List, Set, Tuple
 from aiolimiter import AsyncLimiter
 from dataclasses import dataclass, field
 
@@ -33,8 +33,32 @@ class Interrogator:
     model_id: str
     address: str
 
+    def _process(self, lst):
+        return lst
+
+    async def fetch_tags(self, ctx, md5_hash):
+        rows = await ctx.db.execute_fetchall(
+            "select output_tag_string from interrogated_posts where md5 = ? and model_name = ?",
+            (md5_hash, self.model_id),
+        )
+        assert len(rows) == 1  # run 'fight' mode, there's missing posts
+        tag_string = rows[0][0]
+        return self._process(tag_string.split())
+
 
 class DDInterrogator(Interrogator):
+    def _process(self, lst):
+        new_lst = []
+        for tag in lst:
+            if tag.startswith("rating:"):
+                original_danbooru_tag = tag.split(":")[1]
+            else:
+                original_danbooru_tag = tag
+            if original_danbooru_tag == "safe":
+                continue
+            new_lst.append(original_danbooru_tag)
+        return new_lst
+
     async def interrogate(self, session, path):
         async with session.post(
             f"{self.address}/",