"""Google Maps Geocoding + Place Search for restaurant location lookup."""

from __future__ import annotations

import logging
import os

import httpx

logger = logging.getLogger(__name__)


def _api_key() -> str:
    return os.environ["GOOGLE_MAPS_API_KEY"]


def geocode_restaurant(name: str, address: str | None = None, region: str | None = None) -> dict | None:
    """Look up restaurant coordinates using Google Maps.

    Tries Places Text Search first (more accurate for restaurant names),
    falls back to Geocoding API.

    Returns dict with: latitude, longitude, formatted_address, google_place_id
    or None if not found.
    """
    query = name
    if address:
        query += f" {address}"
    elif region:
        query += f" {region}"

    # Try Places Text Search (better for business names)
    result = _places_text_search(query)
    if result:
        return result

    # Fallback: Geocoding API
    return _geocode(query)


def _places_text_search(query: str) -> dict | None:
    """Search for a place using Google Places Text Search API."""
    try:
        r = httpx.get(
            "https://maps.googleapis.com/maps/api/place/textsearch/json",
            params={
                "query": query,
                "key": _api_key(),
                "language": "ko",
                "type": "restaurant",
            },
            timeout=10,
        )
        r.raise_for_status()
        data = r.json()

        if data.get("status") == "OK" and data.get("results"):
            place = data["results"][0]
            loc = place["geometry"]["location"]
            return {
                "latitude": loc["lat"],
                "longitude": loc["lng"],
                "formatted_address": place.get("formatted_address", ""),
                "google_place_id": place.get("place_id", ""),
            }
    except Exception as e:
        logger.warning("Places text search failed for '%s': %s", query, e)
    return None


def _geocode(query: str) -> dict | None:
    """Geocode an address string."""
    try:
        r = httpx.get(
            "https://maps.googleapis.com/maps/api/geocode/json",
            params={
                "address": query,
                "key": _api_key(),
                "language": "ko",
            },
            timeout=10,
        )
        r.raise_for_status()
        data = r.json()

        if data.get("status") == "OK" and data.get("results"):
            result = data["results"][0]
            loc = result["geometry"]["location"]
            return {
                "latitude": loc["lat"],
                "longitude": loc["lng"],
                "formatted_address": result.get("formatted_address", ""),
                "google_place_id": "",
            }
    except Exception as e:
        logger.warning("Geocoding failed for '%s': %s", query, e)
    return None