require 'cinch'
require 'ostruct'
require 'open-uri'
require 'json'
require 'cinch/toolbox'

module Cinch
  module Plugins
    class Weather
      include Cinch::Plugin

      set :prefix, /^~/
      set :help, <<-USAGE.gsub(/^ {6}/, '')
        Check the weather right from the IRC channel!
        Usage:
        * ~weather <location>: The bot will check the weather for the location you provide!
      USAGE

      match /weather (.+)/i, method: :current
      match /f (.+) (.+)/i, method: :hourly

      def current(m, query)
        query.gsub! /\s/, '+'
        geometry = geolookup(query)
        return m.reply "No results found for #{query}." if geometry.nil?

        data = get_current(geometry)
        return m.reply 'Uh oh, there was a problem getting the specified weather data. Try again later.' if data.nil?

        locale = location_r(query)

        m.reply(current_summary(data, locale))
      end

      # Now we introduce a method to get the hourly up to 24hrs.

      def hourly(hour, query)
        query.gsub! /\s/, '+'
        geometry = geolookup(query)
        return m.reply "No results found for #{query}." if geometry.nil?

        data = get_hourly(hour, geometry)
        return m.reply 'Oh no! There was a problem fetching the specified weather data. Please try again later.' if data.empty?

        reply(hourly_summary(hour, data))
      end

      # Fetch the location from Google Maps for the area the user is looking for to be passed into get_current.

      def geolookup(zipcode)
        raw_location = JSON.parse(open("http://maps.googleapis.com/maps/api/geocode/json?address=#{zipcode}&sensor=true").read)
        location = raw_location['results'][0]['geometry']['location']
        lat = location['lat']
        lng = location['lng']

        geometry = "#{lat},#{lng}"
      rescue
        nil
      end

      # Fetch the current weather data for the location found in geolookup.

      def get_current(geometry)
        data = JSON.parse(open("https://api.forecast.io/forecast/9cf5d8e80388a30e7e37b14e43b9707a/#{geometry}").read)
        current = data['currently']

        OpenStruct.new(
          conditions:    current['summary'],
          temp:          current['temperature'],
          feels_like:    current['apparentTemperature'],
          wind_speed:    current['windSpeed'],
          wind_bearing:  current['windBearing']
        )
        rescue
          nil
        end

      # Now we are going to fetch the hourly data.

      def get_hourly(hour, geometry)
        logo = "10Hourly Fore4cast:"
        data = JSON.parse(open("https://api.forecast.io/forecast/9cf5d8e80388a30e7e37b14e43b9707a/#{geometry}").read)
        raw_hourly = data['hourly']['data']
        hourly = []

        raw_hourly.each{|i| hourly.push("%s Forecast Predicted in #{hour}(s): %s | Temp: %s - Will Feel Like: %s | Wind: %s - Bearing: %s" % [logo, i['summary'], i['temperature'], i['apparentTemperature'], i['windSpeed'], i['windBearing']])}

        return hourly
      end

      def hourly_summary(hour, data)
        if hour == "1"
          hourly[0].each{|i| m.reply i}
        return;
      end
        if hour == 2
          hourly[1].each{|i| m.reply i}
        return;
      end
        if hour == 3
          hourly[2].each{|i| m.reply i}
        return;
      end
        if hour == 4
          hourly[3].each{|i| m.reply i}
        return;
      end
        if hour == 5
          hourly[4].each{|i| m.reply i}
        return;
      end
        if hour == 6
          hourly[5].each{|i| m.reply i}
        return;
      end
        if hour == 7
          hourly[6].each{|i| m.reply i}
        return;
      end
        if hour == 8
          hourly[7].each{|i| m.reply i}
        return;
      end
        if hour == 9
          hourly[8].each{|i| m.reply i}
        return;
      end
        if hour == 10
          hourly[9].each{|i| m.reply i}
        return;
      end
        if hour == 11
          hourly[10].each{|i| m.reply i}
        return;
      end
        if hour == 12
          hourly[11].each{|i| m.reply i}
        return;
      end
        if hour == 13
          hourly[12].each{|i| m.reply i}
        return;
      end
        if hour == 14
          hourly[13].each{|i| m.reply i}
        return;
      end
        if hour == 15
          hourly[14].each{|i| m.reply i}
        return;
      end
        if hour == 16
          hourly[15].each{|i| m.reply i}
        return;
      end
        if hour == 17
          hourly[16].each{|i| m.reply i}
        return;
      end
        if hour == 18
          hourly[17].each{|i| m.reply i}
        return;
      end
        if hour == 19
          hourly[18].each{|i| m.reply i}
        return;
      end
        if hour == 20
          hourly[19].each{|i| m.reply i}
        return;
      end
        if hour == 21
          hourly[20].each{|i| m.reply i}
        return;
      end
        if hour == 22
          hourly[21].each{|i| m.reply i}
        return;
      end
        if hour == 23
          hourly[22].each{|i| m.reply i}
        return;
      end
        if hour == 24
          hourly[23].each{|i| m.reply i}
        return;
      end
    end

      # We're gonna fetch the location data again so we can pass it into the results. Primitive, but it works.

      def location_r(location)
        raw_locale = JSON.parse(open("http://maps.googleapis.com/maps/api/geocode/json?address=#{location}&sensor=true").read)
        locale_data = raw_locale['results'][0]['formatted_address']

        locale = "#{locale_data}"
      end

      def current_summary(data, locale)
        # Converting Imperial for Metric, because it's sane when using a protocol like IRC to deliver this info

        temp_c = (data.temp - 32) * 5 / 9
        feels_temp_c = (data.feels_like - 32) * 5 / 9
        wind_speed_kph = data.wind_speed * 1.6
        temp_c = (temp_c*10).ceil/10.0
        feels_temp_c = (feels_temp_c*10).ceil/10.0
        wind_speed_kph = (wind_speed_kph*10).ceil/10.0

        # Now, deliver the info to IRC

        %Q{10Weather: #{locale} | Current Weather: #{data.conditions} | Temp: #{data.temp} F (#{temp_c} C) - Feels like: #{data.feels_like} F (#{feels_temp_c} C) | Wind: #{data.wind_speed} MPH (#{wind_speed_kph} KPH) - Bearing: #{data.wind_bearing}  }
      end
    end
  end
end