import json
from datetime import datetime

import requests
from telegram import ParseMode

from exceptions import ServerCommunicationError, NoArgError, WeatherStationNotFoundError

token: str

EMOJIS = {'feels_like': '🧑', 'rain': '☔', 'snow': '🌨️', 'wind': '💨', 'sun': '☀️'}


def __init__():
    with open("openweathermap_token") as openweathermap_token:
        global token
        token = openweathermap_token.read()


class CurrentWeather:
    sunrise: datetime
    sunset: datetime
    temperature: float
    feels_like: float
    wind_speed: float
    rain: float
    main: str
    description: str

    def __init__(self, json_data: json):
        self.sunrise = datetime.fromtimestamp(json_data['sunrise'])
        self.sunset = datetime.fromtimestamp(json_data['sunset'])
        self.temperature = json_data['temp']
        self.feels_like = json_data['feels_like']
        self.wind_speed = json_data['wind_speed']
        if 'rain' in json_data:
            self.rain = json_data['rain']['1h']
        else:
            self.rain = -1
        self.main = json_data['weather'][0]['main']
        self.description = json_data['weather'][0]['description']

    def __str__(self):
        string = f"*Now*: {self.main} | {self.temperature:.0f}°C {EMOJIS['feels_like']}: {self.feels_like:.0f}°C "
        if self.rain != -1:
            if self.main == 'Snow':
                string += EMOJIS['snow']
            else:
                string += EMOJIS['rain']
            string += f": {self.rain:.0f}mm"

        string += f" {EMOJIS['wind']}: {3.6 * self.wind_speed:.1f}km/h" \
                  f" {EMOJIS['sun']}: {self.sunrise.strftime('%H:%M')} - {self.sunset.strftime('%H:%M')}"
        return string


class HourlyWeather:
    time: datetime
    temperature: float
    feels_like: float
    wind_speed: float
    probability_of_precipitation: float
    rain: float
    main: str
    description: str

    def __init__(self, json_data: json):
        self.time = datetime.fromtimestamp(json_data['dt'])
        self.temperature = json_data['temp']
        self.feels_like = json_data['feels_like']
        self.wind_speed = json_data['wind_speed']
        self.probability_of_precipitation = json_data['pop']
        if 'rain' in json_data:
            self.rain = json_data['rain']['1h']
        else:
            self.rain = 0
        self.main = json_data['weather'][0]['main']
        self.description = json_data['weather'][0]['description']

    def __str__(self):
        string = f"*{self.time.strftime('%Hh')}*: {self.main} | {self.temperature:.0f}°C" \
                 f" {EMOJIS['feels_like']}: {self.feels_like:.0f}°C "
        if self.probability_of_precipitation != 0:
            if self.main == 'Snow':
                string += EMOJIS['snow']
            else:
                string += EMOJIS['rain']
            string += f": {100 * self.probability_of_precipitation:.0f}% {self.rain}mm"

        string += f" {EMOJIS['wind']}: {3.6 * self.wind_speed:.1f}km/h"
        return string


class DailyWeather:
    time: datetime
    temp: dict
    feels_like: float
    wind_speed: float
    probability_of_precipitation: float
    rain: float
    main: str
    description: str

    def __init__(self, json_data: json):
        self.time = datetime.fromtimestamp(json_data['dt'])
        self.temp = {'min': json_data['temp']['min'], 'day': json_data['temp']['day'], 'max': json_data['temp']['max']}
        self.feels_like = json_data['feels_like']['day']
        self.wind_speed = json_data['wind_speed']
        self.probability_of_precipitation = json_data['pop']
        if 'rain' in json_data:
            self.rain = json_data['rain']
        else:
            self.rain = 0
        self.main = json_data['weather'][0]['main']
        self.description = json_data['weather'][0]['description']

    def __str__(self):
        string = f"*{self.time.strftime('%d')}*: {self.main} | {self.temp['min']:.0f}°C - {self.temp['day']:.0f}°C" \
                 f" - {self.temp['max']:.0f}°C {EMOJIS['feels_like']}: {self.feels_like:.0f}°C "
        if self.probability_of_precipitation != 0:
            if self.main == 'Snow':
                string += EMOJIS['snow']
            else:
                string += EMOJIS['rain']
            string += f": {100 * self.probability_of_precipitation:.0f}% {self.rain}mm"
        string += f" {EMOJIS['wind']}: {3.6 * self.wind_speed:.1f}km/h"
        return string


class TotalWeather:
    current_weather: CurrentWeather
    hourly_weather = []
    daily_weather = []

    def __init__(self, json_data: json):
        for single_daily_weather in json_data['daily'][2:]:
            self.daily_weather.append(DailyWeather(single_daily_weather))
        for single_hourly_weather in json_data['hourly'][1:]:
            self.hourly_weather.append(HourlyWeather(single_hourly_weather))
        self.current_weather = CurrentWeather(json_data['current'])

    def __str__(self):
        string = ""
        string += (str(self.current_weather) + '\n')
        short_hourly_weather = self.hourly_weather[:5] + self.hourly_weather[6:20:2] + self.hourly_weather[21::4]
        day_before = short_hourly_weather[0].time.strftime("%d")
        for weather in short_hourly_weather:
            if day_before != weather.time.strftime("%d"):
                string += '\n'
            string += (str(weather) + '\n')
            day_before = weather.time.strftime("%d")
        string += '\n'
        for weather in self.daily_weather:
            string += (str(weather) + '\n')
        return string

    def clear(self):
        self.hourly_weather.clear()
        self.daily_weather.clear()


class City:
    cid: int
    name: str
    lat: int
    lon: int
    weather = TotalWeather

    def __init__(self, cid: int, name: str, lat: int, lon: int):
        self.cid = cid
        self.name = name
        self.lat = lat
        self.lon = lon

    def query_weather(self):
        request = requests.get(
            f"http://api.openweathermap.org/data/2.5/onecall?\
            lang=de&units=metric&exclude=minutely&lat={self.lat}&lon={self.lon}&appid={token}")
        if request.status_code != 200:
            raise ServerCommunicationError
        self.weather = TotalWeather(request.json())

    def print_weather(self):
        print(self.weather)

    def get_weather_str(self) -> str:
        return f"Weather for *{self.name}*:\n" + str(self.weather)


def get_city_by_name(city_name: str) -> City:
    with open("city.list.json", "r") as city_list_file:
        city_data = city_list_file.read()
    city_json = json.loads(city_data)
    city_list = list(filter(lambda x: x['name'].casefold() == city_name.casefold(), city_json))
    if len(city_list) == 0:
        city_list = list(filter(lambda x: (x['name'].casefold().find(city_name.casefold())) != -1, city_json))
    if len(city_list) == 0:
        return City(cid=-1, name="none", lat=0, lon=0)
    return City(cid=city_list[0]['id'], name=city_list[0]['name'], lat=city_list[0]['coord']['lat'],
                lon=city_list[0]['coord']['lon'])


def check_city_list():
    with open("city.list.json", "r") as city_list_file:
        city_data = city_list_file.read()
    city_json = json.loads(city_data)
    de_city_list = list()
    for city in city_json:
        # if city['country'] == "DE":
        de_city_list.append(city)
    already_mentioned_city_list = []
    for current_city in de_city_list:
        matched_city_list = list(
            filter(
                lambda x: x['name'] == current_city['name'] and current_city['coord']['lat'] - 1 > x['coord'][
                    'lat'] >
                          current_city['coord']['lat'] + 1 and current_city['coord']['lon'] - 1 > x['coord'][
                              'lon'] >
                          current_city['coord']['lon'] + 1, de_city_list))
        if len(matched_city_list) > 1 and current_city['name'] not in already_mentioned_city_list:
            print(matched_city_list)
            already_mentioned_city_list.append(current_city['name'])

    # city_list = get_city_list_by_name("Berlin")
    # print(city_list[0])
    # for city in city_list:
    #     if city['country'] == "DE":
    #         print(city['name'] + " in " + city['country'] + " is " + str(city['id']) + " at " + str(
    #             city['coord']['lat']) + "," + str(city['coord']['lon']))


def handle_weather(update, context):
    if len(context.args) == 0:
        raise NoArgError
    requested_city = get_city_by_name(' '.join(context.args))
    if requested_city.name == "none":
        raise WeatherStationNotFoundError
    requested_city.query_weather()
    update.message.reply_text(requested_city.get_weather_str(), disable_notification=True,
                              parse_mode=ParseMode.MARKDOWN)

    requested_city.weather.clear()