# -*- coding: UTF-8 -*-
# pylint: disable=C0111,R0903

"""Displays the temperature on the current location based on the ip

Requires the following python packages:
    * requests

Parameters:
    * weather.location: Set location, defaults to 'auto' for getting location automatically from a web service
                        If set to a comma-separated list, left-click and right-click can be used to rotate the locations.
                        Locations should be city names or city ids.
    * weather.unit: metric (default), kelvin, imperial
    * weather.showcity: If set to true, show location information, otherwise hide it (defaults to true)
    * weather.showminmax: If set to true, show the minimum and maximum temperature, otherwise hide it (defaults to false)
    * weather.apikey: API key from http://api.openweathermap.org
"""

import core.module
import core.widget
import core.input

import util.format
import util.location

import re

import requests
from requests.exceptions import RequestException

class Module(core.module.Module):
    @core.decorators.every(minutes=15)
    def __init__(self, config, theme):
        super().__init__(config, theme, core.widget.Widget(self.output))

        self.__temperature = 0
        self.__apikey = self.parameter('apikey', 'af7bfe22287c652d032a3064ffa44088')
        self.__location = util.format.aslist(self.parameter('location', 'auto'))

        self.__index = 0
        self.__showcity = util.format.asbool(self.parameter('showcity', True))
        self.__showminmax = util.format.asbool(self.parameter('showminmax', False))
        self.__unit = self.parameter('unit', 'metric')
        self.__valid = False

        core.input.register(self, button=core.input.LEFT_MOUSE, cmd=self.__next_location)
        core.input.register(self, button=core.input.RIGHT_MOUSE, cmd=self.__prev_location)

    def __next_location(self, event):
        self.__index = (self.__index + 1) % len(self.__location)
        self.update()

    def __prev_location(self, event):
        self.__index = len(self.__location) - 1 if self.__index <= 0 else self.__index - 1
        self.update()

    def temperature(self):
        return util.format.astemperature(self.__temperature, self.__unit)

    def tempmin(self):
        return util.format.astemperature(self.__tempmin, self.__unit)

    def tempmax(self):
        return util.format.astemperature(self.__tempmax, self.__unit)

    def city(self):
        city = re.sub('[_-]', ' ', self.__city)
        return u'{} '.format(city)

    def output(self, widget):
        if not self.__valid:
            return u'?'
        if self.__showminmax:
            self.__showcity=False
            return self.city() + self.temperature() + '  Hi:' + self.tempmax() + '  Lo:' + self.tempmin()
        elif self.__showcity:
            return self.city() + self.temperature()
        else:
            return self.temperature()

    def state(self, widget):
        if self.__valid:
            if 'thunderstorm' in self.__weather:
                return ['thunder']
            elif 'drizzle' in self.__weather:
                return ['rain']
            elif 'rain' in self.__weather:
                return ['rain']
            elif 'snow' in self.__weather:
                return ['snow']
            elif 'sleet' in self.__weather:
                return ['sleet']
            elif 'clear' in self.__weather:
                return ['clear']
            elif 'cloud' in self.__weather:
                return ['clouds']

        return []

    def update(self):
        try:
            weather_url = 'http://api.openweathermap.org/data/2.5/weather?appid={}'.format(self.__apikey)
            weather_url = '{}&units={}'.format(weather_url, self.__unit)
            if self.__location[self.__index] == 'auto':
                coord = util.location.coordinates()
                weather_url = '{url}&lat={lat}&lon={lon}'.format(url=weather_url, lat=coord[0], lon=coord[1])
            elif self.__location[self.__index].isdigit():
                weather_url = '{url}&id={id}'.format(url=weather_url, id=self.__location[self.__index])
            else:
                weather_url = '{url}&q={city}'.format(url=weather_url, city=self.__location[self.__index])
            weather = requests.get(weather_url).json()
            self.__city = weather['name']
            self.__temperature = int(weather['main']['temp'])
            self.__tempmin = int(weather['main']['temp_min'])
            self.__tempmax = int(weather['main']['temp_max'])
            self.__weather = weather['weather'][0]['main'].lower()
            self.__valid = True
        except Exception:
            self.__valid = False

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