feature/entra id authentication added

backend/app/api/chat.py

@@ -1,9 +1,10 @@
 import json
 
-from fastapi import APIRouter, HTTPException, status
+from fastapi import APIRouter, Depends, HTTPException, status
 from fastapi.responses import StreamingResponse
 
 from ..config import settings
+from ..middleware.auth import require_auth
 from ..models.schemas import ChatRequest, ChatResponse, ProviderListResponse
 from ..services.provider_manager import provider_manager
 
@@ -11,7 +12,7 @@ router = APIRouter(prefix="/api/chat", tags=["chat"])
 
 
 @router.post("/", response_model=ChatResponse)
-async def chat(request: ChatRequest):
+async def chat(request: ChatRequest, user: dict = Depends(require_auth)):
     """
     Non-streaming chat endpoint
     """
@@ -30,7 +31,7 @@ async def chat(request: ChatRequest):
 
 
 @router.post("/stream")
-async def chat_stream(request: ChatRequest):
+async def chat_stream(request: ChatRequest, user: dict = Depends(require_auth)):
     """
     Streaming chat endpoint - returns SSE (Server-Sent Events)
     """