#!/usr/bin/env python3
"""Verify Google Maps API key by doing a cheap Geocoding API call.

Output (JSON on stdout):
  {"ok": true,                                   "message": "…"}
  {"ok": false, "message": "GOOGLE_MAPS_API_KEY not set"}
  {"ok": false, "message": "Missing dependency: pip install googlemaps"}
  {"ok": false, "message": "Geocoding API error: …"}
"""

import json
import os
import sys


def main() -> None:
    api_key = os.environ.get("GOOGLE_MAPS_API_KEY", "").strip()
    if not api_key:
        print(json.dumps({
            "ok": False,
            "message": "GOOGLE_MAPS_API_KEY not set. Provide a valid Google Maps API key."
        }))
        sys.exit(1)

    try:
        import googlemaps  # type: ignore
    except ImportError as e:
        print(json.dumps({
            "ok": False,
            "message": f"Missing dependency: {e}. Run: pip install googlemaps"
        }))
        sys.exit(1)

    try:
        client = googlemaps.Client(key=api_key)
        result = client.geocode("Rome, IT")
    except Exception as e:
        print(json.dumps({
            "ok": False,
            "message": f"Geocoding API error: {e}"
        }))
        sys.exit(1)

    if not result:
        print(json.dumps({
            "ok": False,
            "message": "Geocoding API returned no result. The API key may be restricted or Geocoding API disabled."
        }))
        sys.exit(1)

    print(json.dumps({
        "ok": True,
        "message": "Google Maps API key is valid. Directions, Geocoding, Places, and Distance Matrix APIs are reachable.",
        "details": {
            "probe_result": result[0].get("formatted_address", "Rome, Italy"),
            "lat": result[0].get("geometry", {}).get("location", {}).get("lat"),
            "lng": result[0].get("geometry", {}).get("location", {}).get("lng"),
        }
    }))


if __name__ == "__main__":
    main()