sharkk_set_color

#!/usr/bin/env ruby
$:.unshift File.expand_path('../lib', __FILE__)
require 'sharkk'
require 'optparse'

options = {breath: 3, brightness: 3}
parser = OptionParser.new do |opts|
  opts.banner = <<-EOS
Usage: #{$0} [options] <rgb>

<rgb> should be specified as a hex value similar to html (i.e. ff0000 = red)
EOS

  opts.on("-fSPEED", "--breath=SPEED", "Set breath speed (0-3)") do |n|
    options[:breath] = n.to_i
  end

  opts.on("-bBRIGHTNESS", "--brightness=BRIGHTNESS", "Set brightness (0-3)") do |n|
    options[:brightness] = n.to_i
  end

  opts.on("-h", "--help", "Prints this help") do
    $stderr.puts opts
    exit 1
  end
end

parser.parse!

def die(parser, err)
  $stderr.puts(err)
  parser.parse(["-h"])
  exit 1
end

die(parser, "<rgb> must be specified>") if ARGV.length != 1
m = /([0-9a-fA-F]+)/.match(ARGV[0])
if !m || (m[1].length != 3 && m[1].length != 6)
  die(parser, "<rgb> bad format, should be hex string")
end
options[:rgb] = m[1]
# Handle 3-char strings similar to html
if options[:rgb].length == 3
  options[:rgb] = options[:rgb][0] +
                  options[:rgb][0] +
                  options[:rgb][1] +
                  options[:rgb][1] +
                  options[:rgb][2] +
                  options[:rgb][2]
end
r = options[:rgb][0..1].to_i(16)
g = options[:rgb][2..3].to_i(16)
b = options[:rgb][4..5].to_i(16)

die(parser, "breath speed must be 0-3") unless (0..3) === options[:breath]
die(parser, "brightness must be 0-3") unless (0..3) === options[:brightness]

Sharkk::Mouse.open { |m|
  c = Sharkk::Color.new(r, g, b, breath: options[:breath], brightness: options[:brightness])
  m.set_color(c)
}