#!/usr/bin/env python3
"""Audio keep-alive: ping the Tinfoil TEE audio models through localhost LiteLLM
so voice mode doesn't pay the ~24s cold-start after idle.

Runs INSIDE the gateway container via the Cloudron scheduler addon. Uses the
LITELLM_MASTER_KEY already in the container env. TTS-only (STT pings cost
$0.01/request each; TTS $0.002 — see docs, keep-alive economics). Silent on
success; prints + exits non-zero on failure so scheduler logs capture it.
"""
import json, os, urllib.request, urllib.error, sys

PORT = os.environ.get("PORT", "4000")

def master_key():
    """The gateway's start.sh generates the master key into /app/data/.master_key
    and exports LITELLM_MASTER_KEY for the litellm process — scheduler tasks run
    in a separate process tree, so read the key file directly."""
    key = os.environ.get("LITELLM_MASTER_KEY", "")
    if key:
        return key
    try:
        with open("/app/data/.master_key") as f:
            return f.read().strip()
    except OSError:
        return ""

KEY = master_key()
if not KEY:
    print("keepalive: no master key (env or /app/data/.master_key)", file=sys.stderr)
    sys.exit(1)

fail = 0

# TTS warm (voxtral-tts) — $0.002/request (Tinfoil request-priced)
req = urllib.request.Request(
    f"http://127.0.0.1:{PORT}/v1/audio/speech",
    data=json.dumps({"model": "tinfoil/voxtral-tts", "input": "ok",
                     "voice": "casual_female"}).encode(),
    method="POST",
    headers={"Authorization": f"Bearer {KEY}", "Content-Type": "application/json"})
try:
    urllib.request.urlopen(req, timeout=30)
except Exception as e:
    print(f"keepalive: TTS ping failed: {e}", file=sys.stderr)
    fail = 1

# STT warm disabled 2026-10-11: $0.01/STT request × 6/hr ≈ $52/mo. Revisit only
# with a cheaper warm strategy.
sys.exit(fail)