"""Health check router.

A lightweight ``GET /api/health`` endpoint that verifies the application
is running and can serve requests.  It does not probe fail2ban — that
responsibility belongs to the health service (Stage 4).
"""

from fastapi import APIRouter
from fastapi.responses import JSONResponse

router: APIRouter = APIRouter(prefix="/api", tags=["Health"])


@router.get("/health", summary="Application health check")
async def health_check() -> JSONResponse:
    """Return a 200 response confirming the API is operational.

    Returns:
        A JSON object with ``{"status": "ok"}``.
    """
    return JSONResponse(content={"status": "ok"})