GeoIPWeather.5m.rb

#!/usr/bin/env ruby
# coding: utf-8

# <bitbar.title>GeoIPWeather</bitbar.title>
# <bitbar.version>v0.1.1</bitbar.version>
# <bitbar.author>Taylor Zane</bitbar.author>
# <bitbar.author.github>taylorzane</bitbar.author.github>
# <bitbar.desc>Your weather in the menu bar 🌤</bitbar.desc>
# <bitbar.image>http://i.imgur.com/vrT6vfb.png</bitbar.image>
# <bitbar.dependencies>ruby</bitbar.dependencies>
# <bitbar.abouturl>https://github.com/taylorzane</bitbar.abouturl>

### USER VARIABLES
UNITS = 'C' # This can be: (F)ahrenheit, (C)elsius, (K)elvin
API_KEY = '8b4824b451d5db1612156837df880f55' # you can also get your own at http://openweathermap.org/
LOCATION = 'Exeter, UK'

require 'json'
require 'net/http'

def no_data(message = nil)
  if message
    puts message
  else
    puts 'Cannot get weather.'
  end
  exit
end

def weather(location)
  temperature_unit =
    case UNITS.upcase
    when 'F'
      '&units=imperial'
    when 'C'
      '&units=metric'
    else
      ''
    end

  temperature_symbol =
    case UNITS.upcase
    when 'F'
      '℉'
    when 'C'
      '℃'
    else
      'K'
    end

  weather_uri =
    URI('http://api.openweathermap.org/data/2.5/weather' \
        "?q=#{location}" \
        "&appid=#{API_KEY}" \
        "#{temperature_unit}")

  weather_data = Net::HTTP.get(weather_uri)

  no_data unless weather_data

  weather_json = JSON.parse weather_data

  no_data weather_json['message'] if weather_json['cod'] == '404'

  temperature = weather_json['main']['temp'].round

  puts "#{temperature}#{temperature_symbol} (#{location})"
end

weather(*LOCATION)