"""Health/observability endpoints (§15)."""

from __future__ import annotations

from fastapi import APIRouter, Depends
from sqlalchemy import text
from sqlalchemy.ext.asyncio import AsyncSession

import gogo
from gogo.db import get_session

router = APIRouter()


@router.get("/health")
async def health():
    return {"status": "ok", "version": gogo.__version__}


@router.get("/health/db")
async def health_db(session: AsyncSession = Depends(get_session)):
    await session.execute(text("SELECT 1"))
    return {"status": "ok"}


@router.get("/health/voice")
async def health_voice():
    """Voice pipeline liveness via its heartbeat file (shared volume)."""
    import os
    import time

    from gogo.voice.server import heartbeat_path

    path = heartbeat_path()
    try:
        age = time.time() - os.path.getmtime(path)
    except OSError:
        return {"status": "down", "detail": "no heartbeat file"}
    if age > 60:
        return {"status": "down", "detail": f"heartbeat {int(age)}s old"}
    return {"status": "ok", "heartbeat_age_s": int(age)}