from fastapi import APIRouter, HTTPException
from app.models.schemas import ChatRequest, ChatResponse
from app.services.gigachat import call_gigachat

router = APIRouter()

@router.post("/chat", response_model=ChatResponse)
async def chat_endpoint(payload: ChatRequest):
    try:
        reply = await call_gigachat(payload.message, payload.agent.value)
        return ChatResponse(reply=reply, agent_used=payload.agent.value)
    except Exception as exc:
        raise HTTPException(status_code=502, detail=f"GigaChat error: {str(exc)}")