#!/usr/bin/env python3

# You need to somehow make the variables OWM_LAT, OWM_LON, OWM_APIKEY
# available in the environment before using this.

import requests
import sys
import os

from block import *

WEATHER_URL = "https://api.openweathermap.org/data/2.5/weather?lat={lat}&lon={lon}&units=metric&appid={apikey}"


class Weather(Block):
    def execute(self):
        url = WEATHER_URL.format(
            lat=os.environ['OWM_LAT'],
            lon=os.environ['OWM_LON'],
            apikey=os.environ['OWM_APIKEY'],
        )

        weather = requests.get(url).json()

        self.icon_from_id(weather['weather'][0]['icon'])

        return '{temp:.1f}°C \ue34b {windspeed:.1f}m/s'.format(
            temp=weather['main']['temp'],
            windspeed=weather['wind']['speed'],
        )

    def icon_from_id(self, icon_id):
        # https://openweathermap.org/weather-conditions
        # http://nerdfonts.com/?set=nf-weather-#cheat-sheet
        if icon_id.startswith('01'):
            # clear sky
            if icon_id[2] == 'd':
                self.set_icon('\ue30d')  # nf-weather-day_sunny
                self.set_icon_color('yellow')
            else:
                self.set_icon('\ue32b')  # nf-weather-night_clear
                self.set_icon_color('gray')

        elif icon_id.startswith('02'):
            # few clouds
            if icon_id[2] == 'd':
                self.set_icon('\ue30c')  # nf-weather-day_sunny_overcast
            else:
                self.set_icon('\ue37b')  # nf-weather-night_partly_cloudy

        elif icon_id.startswith('03') or icon_id.startswith('04'):
            # scattered clouds / broken clouds
            if icon_id[2] == 'd':
                self.set_icon('\ue302')  # nf-weather-day_cloudy
            else:
                self.set_icon('\ue32e')  # nf-weather-night_cloudy

        elif icon_id.startswith('09'):
            # shower rain
            if icon_id[2] == 'd':
                self.set_icon('\ue309')  # nf-weather-day_showers
            else:
                self.set_icon('\ue334')  # nf-weather-night_showers

        elif icon_id.startswith('10'):
            # rain
            if icon_id[2] == 'd':
                self.set_icon('\ue308')  # nf-weather-day_rain
            else:
                self.set_icon('\ue333')  # nf-weather-night_rain

        elif icon_id.startswith('11'):
            # thunderstorm
            if icon_id[2] == 'd':
                self.set_icon('\ue30f')  # nf-weather-day_thunderstorm
            else:
                self.set_icon('\ue338')  # nf-weather-night_thunderstorm

        elif icon_id.startswith('13'):
            # snow
            if icon_id[2] == 'd':
                self.set_icon('\ue30a')  # nf-weather-day_snow
            else:
                self.set_icon('\ue335')  # nf-weather-night_snow

        elif icon_id.startswith('50'):
            # mist
            if icon_id[2] == 'd':
                self.set_icon('\ue303')  # nf-weather-day_fog
            else:
                self.set_icon('\ue346')  # nf-weather-night_fog


def main():
    block = Weather(None)
    block.render()


if __name__ == '__main__':
    main()