import { readKey } from "../../http";
import type { WeatherProvider } from "../../types";
import { getFreeForecast } from "./free";
import { getOneCallForecast } from "./onecall";

/**
 * OpenWeather (the default provider).
 *
 * Set OPENWEATHER_PLAN in .env.local:
 *   free     (default) → 5 days in 3-hour steps
 *   onecall            → One Call 4.0: 48 hours hourly + daily, plus dew point and UV
 */
const usesOneCall = () => process.env.OPENWEATHER_PLAN === "onecall";

export const openWeather: WeatherProvider = {
  id: "openweather",
  label: "OpenWeather",
  envKey: "OPENWEATHER_API_KEY",
  limits: () => (usesOneCall() ? { forecastDays: 8, hourlyStepHours: 1 } : { forecastDays: 5, hourlyStepHours: 3 }),

  getForecast(lat, lon) {
    const key = readKey("OPENWEATHER_API_KEY");
    return usesOneCall() ? getOneCallForecast(lat, lon, key) : getFreeForecast(lat, lon, key);
  },
};