import {Injectable} from '@angular/core';
import {HttpClient} from '@angular/common/http';
import {timer} from 'rxjs';
import {database} from 'firebase';

@Injectable({
    providedIn: 'root'
})
export class WeatherService {
    readonly apiKey = 'e8391af54b6fc09dc82b019fc68b8409';
    readonly city = 'London';
    readonly countryCode = 'CA';
    readonly days = ['SUN', 'MON', 'TUE', 'WED', 'THU', 'FRI', 'SAT'];
    readonly weatherCodes = require('./weatherCodes.json');

    // Weather information
    cloudCover = 0;
    forecast = [];
    humidity = 0;
    icon: string;
    pressure = 0;
    sunrise: Date;
    sunset: Date;
    temp = 0;
    tempMin = 0;
    tempMax = 0;
    weather: string = '';
    wind: [number, number] = [0, 0];

    constructor(httpClient: HttpClient) {
        timer(0, 5 * 60000).subscribe(async () => {
            // Current weather information
            httpClient.get(`https://api.openweathermap.org/data/2.5/weather?q=${this.city},${this.countryCode}&APPID=${this.apiKey}&units=metric`).toPromise().then((weather: any) => {
                this.cloudCover = weather.clouds.all;
                this.humidity = weather.main.humidity;
                this.icon = `wi-${this.weatherCodes[weather.weather[0].id].icon}`;
                this.pressure = weather.main.pressure;
                this.sunrise = new Date(weather.sys.sunrise);
                this.sunset = new Date(weather.sys.sunset);
                this.temp = Math.round(weather.main.temp);
                this.tempMin = Math.round(weather.main.temp_min);
                this.tempMax = Math.round(weather.main.temp_max);
                this.weather = weather.weather[0].description;
                this.wind = [weather.wind.deg, Math.round(weather.wind.speed)];
            });

            // 5 day forecast
            httpClient.get(`https://api.openweathermap.org/data/2.5/forecast?q=${this.city},${this.countryCode}&APPID=${this.apiKey}&units=metric`).toPromise().then((weather: any) => {
                let temp = weather.list.filter(weather => weather.dt_txt.indexOf('12:00:00') != -1);
                temp.splice(0, temp.length - 5);
                this.forecast = temp.map(weather => ({
                    day: this.days[new Date(weather.dt_txt).getDay()],
                    icon: `wi-${this.weatherCodes[weather.weather[0].id].icon}`,
                    temp: Math.round(weather.main.temp)
                }));
            });
        });
    }
}