feat: Implement asset soft deletion with S3 file purging, enhance type safety, and improve error handling in generation and adapter services.

api/service/generation_service.py

@@ -77,7 +77,7 @@ class GenerationService:
         self.bot = bot
     
 
-    async def ask_prompt_assistant(self, prompt: str, assets: List[str] = None) -> str:
+    async def ask_prompt_assistant(self, prompt: str, assets: list[str] | None = None) -> str:
         future_prompt = """You are an prompt-assistant. You improving user-entered prompts for image generation. User may upload reference image too.
          I will provide sources prompt entered by user. Understand user needs and generate best variation of prompt.
           ANSWER ONLY PROMPT STRING!!! USER_ENTERED_PROMPT: """
@@ -157,8 +157,9 @@ class GenerationService:
                     # если генерация уже пошла и упала — пометим FAILED
                     try:
                         db_gen = await self.dao.generations.get_generation(gen.id)
-                        db_gen.status = GenerationStatus.FAILED
-                        await self.dao.generations.update_generation(db_gen)
+                        if db_gen is not None:
+                            db_gen.status = GenerationStatus.FAILED
+                            await self.dao.generations.update_generation(db_gen)
                     except Exception:
                         logger.exception("Failed to mark generation as FAILED")
                     logger.exception("create_generation task failed")
@@ -172,8 +173,9 @@ class GenerationService:
             if gen_id is not None:
                 try:
                     gen = await self.dao.generations.get_generation(gen_id)
-                    gen.status = GenerationStatus.FAILED
-                    await self.dao.generations.update_generation(gen)
+                    if gen is not None:
+                        gen.status = GenerationStatus.FAILED
+                        await self.dao.generations.update_generation(gen)
                 except Exception:
                     logger.exception("Failed to mark generation as FAILED in create_generation_task")
             raise
@@ -201,9 +203,10 @@ class GenerationService:
             if char_info is None:
                 raise Exception(f"Character ID {generation.linked_character_id} not found")
             if generation.use_profile_image:
-                avatar_asset = await self.dao.assets.get_asset(char_info.avatar_asset_id)
-                if avatar_asset:
-                    media_group_bytes.append(avatar_asset.data)
+                if char_info.avatar_asset_id is not None:
+                    avatar_asset = await self.dao.assets.get_asset(char_info.avatar_asset_id)
+                    if avatar_asset and avatar_asset.data:
+                        media_group_bytes.append(avatar_asset.data)
             # generation_prompt = generation_prompt.replace("$char_bio_inserted", f"1. CHARACTER BIO (Must be strictly followed): {char_info.character_bio}")
 
         reference_assets = await self.dao.assets.get_assets_by_ids(generation.assets_list)
@@ -304,7 +307,9 @@ class GenerationService:
 
         # 5. (Опционально) Обновляем запись генерации ссылками на результаты
         # Предполагаем, что у модели Generation есть поле result_asset_ids
-        result_ids = [a.id for a in created_assets]
+        result_ids = []
+        for a in created_assets:
+            result_ids.append(a.id)
 
         generation.result_list = result_ids
         generation.status = GenerationStatus.DONE
@@ -479,4 +484,26 @@ class GenerationService:
             if count > 0:
                 logger.info(f"Cleaned up {count} stale generations (timeout)")
         except Exception as e:
-            logger.error(f"Error cleaning up stale generations: {e}")
+            logger.error(f"Error cleaning up stale generations: {e}")
+
+    async def cleanup_old_data(self, days: int = 2):
+        """
+        Очистка старых данных:
+        1. Мягко удаляет генерации старше N дней
+        2. Мягко удаляет связанные ассеты + жёстко удаляет файлы из S3
+        """
+        try:
+            # 1. Мягко удаляем генерации и собираем asset IDs
+            gen_count, asset_ids = await self.dao.generations.soft_delete_old_generations(days=days)
+            
+            if gen_count > 0:
+                logger.info(f"Soft-deleted {gen_count} generations older than {days} days. "
+                           f"Found {len(asset_ids)} associated asset IDs.")
+            
+            # 2. Мягко удаляем ассеты + жёстко удаляем файлы из S3
+            if asset_ids:
+                purged = await self.dao.assets.soft_delete_and_purge_assets(asset_ids)
+                logger.info(f"Purged {purged} assets (soft-deleted + S3 files removed).")
+            
+        except Exception as e:
+            logger.error(f"Error during old data cleanup: {e}")