const { EventEmitter } = require('events');
const axios = require('axios');
const log = require('loglevel');

const AACHEN = 3247449;
const STEINFURT = 2828105;
const COLOGNE_DEUTZ = 2937790;

class WeatherData extends EventEmitter {
    constructor() {
        super();
    }

    get initial() {
        return { deutz: null };
    }

    start() {
        this.fetch();

        setInterval(() => {
            this.fetch();
        }, 5*60000);
    }

    fetch() {
        Promise.all([
            axios.get(`https://api.openweathermap.org/data/2.5/weather?id=${COLOGNE_DEUTZ}&units=metric&appid=f16fb438a43a12fb3347ca17937649be`).catch(err => log.error(err.config.url, err.message)),
        ]).then(resp => {
            let deutz = null;

            if (resp[0] != undefined) {
                deutz = resp[0].data.main.temp + "°C";
            }

            this.emit("data", { deutz });
        });
    }
}

module.exports = new WeatherData();