Tools

async function getCurrentWeather(
  city: string
): Promise<{
  temperature: number;
  humidity: number;
  windSpeed: number;
  weatherDescription: string;
}> {
  const getWeatherDescription = (code: number): string => {
    const descriptions: { [key: number]: string } = {
      0: "Clear sky",
      1: "Mainly clear",
      2: "Partly cloudy",
      3: "Overcast",
      45: "Foggy",
      48: "Depositing rime fog",
      51: "Light drizzle",
      53: "Moderate drizzle",
      55: "Dense drizzle",
      56: "Light freezing drizzle",
      57: "Dense freezing drizzle",
      61: "Slight rain",
      63: "Moderate rain",
      65: "Heavy rain",
      66: "Light freezing rain",
      67: "Heavy freezing rain",
      71: "Slight snow",
      73: "Moderate snow",
      75: "Heavy snow",
      77: "Snow grains",
      80: "Slight rain showers",
      81: "Moderate rain showers",
      82: "Violent rain showers",
      85: "Slight snow showers",
      86: "Heavy snow showers",
      95: "Thunderstorm",
      96: "Thunderstorm with slight hail",
      99: "Thunderstorm with heavy hail"
    };
    return descriptions[code] || "Unknown";
  };

  try {
    const geocodeUrl = `https://geocoding-api.open-meteo.com/v1/search?name=${encodeURIComponent(
      city
    )}&count=1`;

    const geoRes = await fetch(geocodeUrl);
    if (!geoRes.ok) throw new Error("Failed to fetch geocoding data");

    const geoData = await geoRes.json();
    if (!geoData.results || geoData.results.length === 0) {
      throw new Error("City not found");
    }

    const { latitude, longitude } = geoData.results[0];

    const weatherUrl = `https://api.open-meteo.com/v1/forecast?latitude=${latitude}&longitude=${longitude}&current=temperature_2m,relative_humidity_2m,wind_speed_10m,weather_code`;

    const weatherRes = await fetch(weatherUrl);
    if (!weatherRes.ok) throw new Error("Failed to fetch weather data");

    const weatherData = await weatherRes.json();
    const current = weatherData.current;

    return {
      temperature: current.temperature_2m,
      humidity: current.relative_humidity_2m,
      windSpeed: current.wind_speed_10m,
      weatherDescription: getWeatherDescription(current.weather_code)
    };
  } catch (error: any) {
    throw new Error(error.message || "Unexpected error occurred");
  }
}