import requests
import json
import os

API_URL = "https://geocoding-api.open-meteo.com/v1/search"
CITIES = ["Tel Aviv", "Beersheba", "Jerusalem", "Szeged"]
CACHE_FILE = "coordinates_cache.json"


def fetch_coordinates(city):
    params = {
        "name": city,
        "count": 1
    }
    response = requests.get(API_URL, params=params)
    response.raise_for_status()
    data = response.json()

    if "results" not in data:
        raise ValueError(f"No results found for {city}")

    result = data["results"][0]

    return {
        "name": result["name"],
        "latitude": result["latitude"],
        "longitude": result["longitude"],
        "country": result["country"]
    }


def load_cache():
    if os.path.exists(CACHE_FILE):
        with open(CACHE_FILE, "r") as f:
            return json.load(f)
    return None


def save_cache(data):
    with open(CACHE_FILE, "w") as f:
        json.dump(data, f, indent=4)


def main():
    # Try loading cached data first
    cached_data = load_cache()
    if cached_data:
        print("Loaded from cache:")
        print(json.dumps(cached_data, indent=4))
        return

    # If no cache, fetch from API
    print("Fetching from Open-Meteo API...")
    results = {}

    for city in CITIES:
        results[city] = fetch_coordinates(city)

    save_cache(results)

    print("Saved to cache:")
    print(json.dumps(results, indent=4))


if __name__ == "__main__":
    main()