#!/usr/bin/python3

import requests
import json
import pathlib
from datetime import datetime

# TODO: support other units

icons_day = {
    "clear_sky": "☀️",
    "few_clouds": "🌤️",
    "scattered_clouds": "🌤",
    "broken_clouds": "☁",
    "overcast_clouds": "☁",
    "shower_rain": "🌧",
    "very_heavy_rain": "🌧",
    "rain": "🌧",
    "light_rain": "🌧️",
    "thunderstorm": "⛈",
    "snow": "❄",
    "mist": "🌫"
}

moon_phase = {
    (0.00, 0.124):  "🌑",
    (0.124, 0.249): "🌒",
    (0.250, 0.374): "🌓",
    (0.375, 0.49):  "🌔",
    (0.50, 0.674):  "🌕",
    (0.675, 0.749): "🌖",
    (0.750, 0.824): "🌗",
    (0.825, 0.99):  "🌘",
    (0.99, 1):      "🌑"
}

lat = -34.71
lon = -58.27
api_key = "5d30773002dbb7a5aaa846b1656965b2"
units = "metric"
exclude = "minutely,hourly,alert"
cache_file_name = "/home/mk/.cache/wthr.json"

# update time in minutes
update_time = 5

url = "https://api.openweathermap.org/data/2.5/onecall"
params = {'lat': lat, 'lon': lon, 'appid': api_key, 'units': units, 'exclude': exclude}

curr_time = datetime.now().timestamp()
cache_file = pathlib.Path(cache_file_name)

def cache_update():
    pass

def cache_fetch():
    pass

if cache_file.exists() != True:
    # file doesn't exist, creates one
    pathlib.Path(cache_file_name).touch()
    print("cache file created")

    try:
        res = requests.get(url, params)
    except (requests.ConnectionError, res):
        print("☠️ Service down")
        quit()

    wthr_dict = json.loads(res.text)
    with open(cache_file_name,'w') as cache_file:
        json.dump(wthr_dict, cache_file, indent=4)
else:
    # get file modified time
    mtime = cache_file.stat().st_mtime
    if (curr_time - mtime) > (update_time * 60):
        try:
            res = requests.get(url, params)
        except (requests.ConnectionError, res):
            print("☠️ Service down")
            quit()

        wthr_dict = json.loads(res.text)
        with open(cache_file_name,'w') as cache_file:
            json.dump(wthr_dict, cache_file, indent=4)
    else:
        try:
            with open(cache_file_name,'r') as cache_file:
                wthr_dict = json.loads(cache_file.read())
        except ValueError:
            # file not JSON
            try:
                res = requests.get(url, params)
            except (requests.ConnectionError, res):
                print("☠️ Service down")
                quit()

            wthr_dict = json.loads(res.text)
            with open(cache_file_name,'w') as cache_file:
                json.dump(wthr_dict, cache_file, indent=4)

# print(json.dumps(wthr_dict, indent=4, sort_keys=True))

desc = wthr_dict['current']['weather'][0]['description']
main = wthr_dict['current']['weather'][0]['main']
# temp = int(wthr_dict['current']['feels_like'])
temp = int(wthr_dict['current']['temp'])
icon = icons_day[desc.replace(' ', '_')]
moon_curr = wthr_dict['daily'][0]['moon_phase']
curr_time_int = int(datetime.now().strftime('%H%M'))
sunrise = int(wthr_dict['current']['sunrise'])
sunset = int(wthr_dict['current']['sunset'])

sunrise = int(datetime.fromtimestamp(sunrise).strftime('%H%M'))
sunset = int(datetime.fromtimestamp(sunset).strftime('%H%M'))

for range, moon_icon in moon_phase.items():
    if range[0] <= moon_curr <= range[1]:
        moon_curr = moon_icon
        break

night = (0000, sunrise, sunset + 100, 2359)
sunset = (sunset, sunset + 50)
dusk = (sunset[1], sunset[1] + 50)
day = (sunrise, sunset)

if (dusk[0] <= curr_time_int <= dusk[1]) and main == 'Clear':
    icon = "🌆"
elif (sunset[0] <= curr_time_int <= sunset[1]) and (main == 'Clear'):
    icon = "🌇"
elif ((night[0] <= curr_time_int <= night[1]) or (night[2] <= curr_time_int <= night[3])):
    icon = moon_curr

print("{} {}° {}".format(icon, temp, main))