bathroom

#!/usr/bin/env ruby

require 'optparse'
require 'net/http'
require 'json'

OS = case RbConfig::CONFIG['host_os']
     when /linux/
       :linux
     when /darwin/
       :osx
     end

url = URI("http://sapling.willowtreeapps.com/bathroom/")

notify = false
wait = false
OptionParser.new do |opts|
  opts.banner = "Usage: bathroom [--notify]"

  opts.on("-n", "--notify", "Show info in a notification instead of the terminal") do
    begin
      case OS
      when :linux
        require 'libnotify'
      when :osx
        require ''
      end
      notify = true
    rescue LoadError
      case OS
      when :linux
        warn '"gem install libnotify" for notifications'
      when :osx
        warn '"gem install terminal-notifier" for notifications'
      end
      exit 1
    end
  end

  opts.on("-w", "--wait", "Wait for a bathroom to be open before showing") do
    wait = true
  end
end.parse!

def report(notify, body)
  if notify
    case OS
    when :linux
      Libnotify.show(summary: "Bathroom Tree", body: body, urgency: :critical)
    when :osx
      TerminalNotifier.notify(body, title: "Bathroom Tree")
    end
  else
    puts body
  end
end

if wait
  loop do
    bathrooms = JSON.parse(Net::HTTP.get(url))
    room = bathrooms.find { |room| room['available'] }

    if room
      report(notify, "bathroom #{room['room']} is available")
      exit 0
    end

    sleep 5
  end
else
  bathrooms = JSON.parse(Net::HTTP.get(url))
  report(notify, bathrooms.map do |room|
    "room #{room['room']} is #{room['available'] ? 'available' : 'not available'}"
  end.join("\n"))
end