from fastapi import APIRouter

from app.config import get_settings
from app.schemas.models import HealthResponse
from app.services.llm_client import get_llm
from app.services.monai_preprocess import monai_available
from app.services.rag_pipeline import get_rag, langchain_available
from app.services.yolo_detector import yolo_available

router = APIRouter(tags=["health"])


@router.get("/health", response_model=HealthResponse)
def health() -> HealthResponse:
    settings = get_settings()
    rag = get_rag()
    llm = get_llm()
    return HealthResponse(
        status="ok",
        yolo_available=yolo_available(),
        monai_available=monai_available(),
        langchain_available=langchain_available(),
        llm_configured=llm.enabled,
        demo_mode=settings.demo_mode,
        knowledge_docs=rag.doc_count(),
    )