generate seo text when draft created

resolvers/draft.py

@@ -114,6 +114,10 @@ async def create_draft(_, info, draft_input):
             # Remove id from input if present since it's auto-generated
             if "id" in draft_input:
                 del draft_input["id"]
+                
+            if "seo" not in draft_input and not draft_input["seo"]:
+                body_teaser = draft_input.get("body", "")[:300].split('\n')[:-1].join("\n")
+                draft_input["seo"] = draft_input.get("lead", body_teaser)
 
             # Добавляем текущее время создания
             draft_input["created_at"] = int(time.time())