const FREE_API_URL = 'https://api.open-meteo.com/';
const PAID_API_URL = 'https://customer-api.open-meteo.com/';

export class OpenMeteoApi {
  apikey?: string;

  constructor({apikey = undefined}: {apikey?: string} = {}) {
    this.apikey = apikey;
  }

  getForecastApiUrl(params = {}) {
    const baseUrl = this.apikey ? PAID_API_URL : FREE_API_URL;
    const forecastApiUrl = baseUrl + 'v1/forecast';
    if (this.apikey) {
      // Add apikey to the params.
      params = {...params, apikey: this.apikey};
    }
    return forecastApiUrl + '?' + new URLSearchParams(params).toString();
  }

  async fetchWeather(latitude: number, longitude: number) {
    const params = {
      latitude,
      longitude,
      current: 'weather_code,temperature_2m',
      temperature_unit: 'fahrenheit',
    };
    const response = await fetch(this.getForecastApiUrl(params));
    const data = await response.json();
    return data.current;
  }
}