require "yahoo-weather"
require "mechanize"

class WeatherInPoland
  attr_reader :city
  attr_reader :code
  attr_reader :image
  attr_reader :thumb
  attr_reader :wind_direction

  def find_city(name='Gdynia')
    agent = Mechanize.new
    page = agent.get("http://weather.yahoo.com/poland/")
    form = page.form('pform')
    form.fields.find {|f| f.name == 'location'}.value = name
    page = agent.submit(form)
    url = page.uri.to_s
    near_city = page.parser.xpath('//div[@id="yw-nearstation"]/text()').to_s

    if near_city.empty?
      return false
    else
      @city = near_city.split(':').last.split(',').first.strip
      @code = url.split('-').last.to_i
      return true
    end
  end

  def get_weather(code)
    client = YahooWeather::Client.new
    response = client.lookup_by_woeid(code, YahooWeather::Units::CELSIUS)
    return response
  end

  def get_wind_direction(data)
    wind = data.wind.direction
    if (wind>338)
      @wind_direction = "N"
    elsif (wind==0 && wind<24)
      @wind_direction = "N"
    elsif (wind>=24 && wind<69)
      @wind_direction = "NE"
    elsif (wind>=69 && wind<114)
      @wind_direction = "E"
    elsif (wind>=114 && wind<186)
      @wind_direction = "SE"
    elsif (wind>=186 && wind<204)
      @wind_direction = "S"
    elsif (wind>=204 && wind<249)
      @wind_direction = "SW"
    elsif (wind>=249 && wind<294)
      @wind_direction = "W"
    elsif (wind>=294 && wind<338)
      @wind_direction = "NW"
    else
      @wind_direction = ""
    end
  end

  def get_image(dane)
    sun_rise = dane.astronomy.sunrise
    sun_set = dane.astronomy.sunset

    if sun_rise.past? && sun_set.future?
      time_of_day = 'd'; 
    else
      time_of_day = 'n';
    end

    @thumb = "http://l.yimg.com/a/i/us/nws/weather/gr/#{dane.condition.code.to_s+time_of_day}s.png"
    @image = "http://l.yimg.com/a/i/us/nws/weather/gr/#{dane.condition.code.to_s+time_of_day}.png"
  end
end