from fastapi import APIRouter
from sqlalchemy import text
from sqlalchemy.exc import OperationalError

from app.config import settings
from app.database import engine
from app.mongo import mongo_client, mongo_db

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


@router.get("/health")
async def health_check() -> dict[str, str]:
    db_status = "disconnected"
    try:
        with engine.connect() as conn:
            conn.execute(text("SELECT 1"))
        db_status = "sqlite" if settings.is_sqlite else "connected"
    except OperationalError:
        pass

    mongo_status = "disconnected"
    if mongo_client is not None and mongo_db is not None:
        try:
            await mongo_client.admin.command("ping")
            mongo_status = "connected"
        except Exception:
            mongo_status = "disconnected"

    overall = "ok" if db_status != "disconnected" and mongo_status == "connected" else "degraded"

    return {
        "status": overall,
        "service": "silos-api",
        "database": db_status,
        "mongodb": mongo_status,
        "hint": ""
        if mongo_status == "connected"
        else "Start MongoDB with: docker compose up mongo -d",
    }