require 'fileutils'

module HappyCommit
  def self.sounds
    @sounds ||= Dir.glob(File.dirname(__FILE__)+"/../sounds/*.wav")
  end

  def self.install
    if File.exist?(self.hooks_path)
      FileUtils.mkpath(self.sounds_path)
      self.sounds.each_with_index do |sound, i|
        FileUtils.cp(sound, self.sounds_path+"/#{i}.wav")
      end

      File.open(self.post_commit_path, "w") do |f|
        f << %@#!/usr/bin/env ruby
sounds = Dir.glob(".git/sounds/*.wav")
system("aplay #\{sounds.at(rand(sounds.size))} 2>/dev/null &")
@
      end
      FileUtils.chmod(0755, self.post_commit_path)
    end
  end

  protected
  def self.sounds_path
    ".git/sounds"
  end

  def self.hooks_path
    ".git/hooks"
  end

  def self.post_commit_path
    "#{self.hooks_path}/post-commit"
  end
end