#encoding: utf-8

module WeatherFetcher
  class Provider::WpPl < HtmlBasedProvider

    def self.provider_name
      "Wp.pl"
    end

    def process(string)
      return WeatherData.factory( _process(string) )
    end

    # Process response body and rip out weather data
    def _process(body_raw)

      body = body_raw.downcase

      # days from detailed weather
      days = body.scan(/(\d{1,2})\.(\d{1,2})\.(\d{4})/)
      #puts days.inspect
      #puts days.size

      hours = body.scan(/(\d{2})-(\d{2})/)
      hours = hours.select { |h| h[0].to_i <= 24 and h[1].to_i <= 24 }
      #puts hours.inspect
      #puts hours.size

      # create times
      i_day = 0
      times = Array.new

      (0...(hours.size)).each do |ih|
        # next day
        if ih > 0 and hours[ih][0].to_i < hours[ih - 1][0].to_i
          i_day += 1
        end

        # can not create time with hour 24
        hour_from = hours[ih][0].to_i
        hour_from = 0 if hour_from == 24
        time_from = Time.mktime(
          days[i_day][2].to_i,
          days[i_day][1].to_i,
          days[i_day][0].to_i,
          hour_from,
          0,
          0,
          0
        )
        time_from += 24*3600 if hours[ih][0].to_i == 24

        hour_to = hours[ih][1].to_i
        hour_to = 0 if hour_to == 24
        time_to = Time.mktime(
          days[i_day][2].to_i,
          days[i_day][1].to_i,
          days[i_day][0].to_i,
          hour_to,
          0,
          0,
          0
        )
        time_to += 24*3600 if hours[ih][1].to_i == 24

        h = { :time_from => time_from, :time_to => time_to }
        times << h
      end
      # puts times.to_yaml
      #puts times.size

      temperatures = body.scan(/temperatura:\s*<strong>(-?\d+)[^<]*<\/strong>/)
      #puts temperatures.inspect
      #puts temperatures.size

      #winds = body.scan(/<strong>(\d*\.?\d*)\s*km\/h<\/strong>/)
      #winds.slice!(0,5)
      winds = body.scan(/<td width=\"30%\">[^<]*<strong>(\d*\.?\d*)\s*km\/h<\/strong>/)
      #puts winds.inspect
      #puts winds.size

      data = Array.new

      (0...(temperatures.size)).each do |i|
        t = temperatures[i][0]
        t = t.to_f unless t.nil?

        wind_speed_km_per_h = winds[i][0]
        if t.nil?
          wind_speed_km_per_h = nil
          w = nil
        else
          wind_speed_km_per_h = wind_speed_km_per_h.to_f
          w = wind_speed_km_per_h / 3.6
        end

        h = {
          :time_created => Time.now,
          :time_from => times[i][:time_from],
          :time_to => times[i][:time_to],
          :temperature => t,
          #:pressure => nil,
          :wind_kmh => wind_speed_km_per_h,
          :wind => w,
          #:snow => snows[0][0].to_f,
          #:rain => rains[0][0].to_f,
          :provider => self.class.provider_name
        }

        data << h
      end

      return data
    end


  end

end