feat: Implement image thumbnail generation, storage, and API endpoints for assets, including a regeneration utility.

api/service/generation_service.py

@@ -66,7 +66,7 @@ class GenerationService:
     async def ask_prompt_assistant(self, prompt: str, assets: List[str] = 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:"""
+          ANSWER ONLY PROMPT STRING!!! USER_ENTERED_PROMPT: """
         future_prompt += prompt
         assets_data = []
         if assets is not None:
@@ -88,7 +88,7 @@ class GenerationService:
 
     async def get_generations(self, character_id: Optional[str] = None, limit: int = 10, offset: int = 0) -> List[
         Generation]:
-        return await self.dao.generations.get_generations(limit=limit, offset=offset)
+        return await self.dao.generations.get_generations(character_id = character_id,limit=limit, offset=offset)
 
     async def get_generation(self, generation_id: str) -> Optional[GenerationResponse]:
         gen = await self.dao.generations.get_generation(generation_id)
@@ -162,7 +162,7 @@ class GenerationService:
             for asset in reference_assets
             if asset.data is not None and asset.type == AssetType.IMAGE
         )
-        generation_prompt+=f"PROMPT: {generation.prompt}"
+        generation_prompt+=f" PROMPT: {generation.prompt}"
         logger.info(f"Final generation prompt assembled. Length: {len(generation_prompt)}. Media count: {len(media_group_bytes)}")
 
         # 3. Запускаем процесс генерации и симуляцию прогресса
@@ -209,11 +209,19 @@ class GenerationService:
         created_assets: List[Asset] = []
 
         for idx, img_bytes in enumerate(generated_bytes_list):
+            # Generate thumbnail
+            thumbnail_bytes = None
+            # Assuming AssetType.IMAGE since we are in generated_bytes_list which are images usually
+            # Or use explicit check if we have distinct types in list (not currently)
+            from utils.image_utils import create_thumbnail
+            thumbnail_bytes = await asyncio.to_thread(create_thumbnail, img_bytes)
+            
             new_asset = Asset(
                 name=f"Generated_{generation.linked_character_id}_{random.randint(1000, 9999)}",
                 type=AssetType.IMAGE,
                 linked_char_id=generation.linked_character_id,  # Если генерация привязана к персонажу
                 data=img_bytes,
+                thumbnail=thumbnail_bytes
                 # Остальные поля заполнятся дефолтными значениями (created_at)
             )
 
@@ -236,6 +244,8 @@ class GenerationService:
         end_time = datetime.now()
         generation.execution_time_seconds = (end_time - start_time).total_seconds()
         
+        logger.info(f"DEBUG: Saving generation {generation.id}. Metrics: api_exec={generation.api_execution_time_seconds}, tokens={generation.token_usage}, exec={generation.execution_time_seconds}")
+        
         await self.dao.generations.update_generation(generation)
         logger.info(f"Generation {generation.id} completed successfully. {len(created_assets)} assets created. Total Time: {generation.execution_time_seconds:.2f}s")