Update chat_handler.py

chat_handler.py

@@ -204,6 +204,7 @@ class ChatRequest(BaseModel):
 class StartRequest(BaseModel): 
     project_name: str
     version_no: Optional[int] = None # Opsiyonel, belirtilmezse published olan en büyük version no'yu kullan
+    locale: Optional[str] = None
 
 class ChatResponse(BaseModel):  
     session_id: str
@@ -220,6 +221,19 @@ async def start_session(req: StartRequest):
         project = next((p for p in cfg.projects if p.name == req.project_name and p.enabled), None)
         if not project:
             raise HTTPException(404, f"Project '{req.project_name}' not found or disabled")
+
+        # Determine locale
+        session_locale = req.locale
+        if not session_locale:
+            # Use project's default locale
+            session_locale = project.default_locale        
+
+        # Validate locale is supported by project
+        if session_locale not in project.supported_locales:
+            raise HTTPException(
+                400, 
+                f"Locale '{session_locale}' not supported by project. Supported: {project.supported_locales}"
+            )
         
         # Find version
         if req.version_no:
@@ -245,7 +259,8 @@ async def start_session(req: StartRequest):
         # Create session with version config - PARAMETRE DÜZELTMESİ
         session = session_store.create_session(
             project_name=req.project_name,
-            version_no=version.no  # version objesi yerine version.no
+            version_no=version.no,
+            locale=session_locale
         )
         
         # Version config'i session'a ekle