class Jeweler::Generator::Application

def build_options(arguments)
  env_opts_string = ENV['JEWELER_OPTS'] || ''
  env_opts        = Jeweler::Generator::Options.new(shellwords(env_opts_string))
  argument_opts   = Jeweler::Generator::Options.new(arguments)
  env_opts.merge(argument_opts)
end

def run!(*arguments)
  options = build_options(arguments)
  if options[:invalid_argument]
    $stderr.puts options[:invalid_argument]
    options[:show_help] = true
  end
  if options[:show_version]
    $stderr.puts "Version: #{Jeweler::Version::STRING}"
    return 1
  end
  if options[:show_help]
    $stderr.puts options.opts
    return 1
  end
  if options[:project_name].nil? || options[:project_name].squeeze.strip == ''
    $stderr.puts options.opts
    return 1
  end
  begin
    generator = Jeweler::Generator.new(options)
    generator.run
    return 0
  rescue Jeweler::NoGitUserName
    $stderr.puts %{No user.name found in ~/.gitconfig. Please tell git about yourself (see http://help.github.com/git-email-settings/ for details). For example: git config --global user.name "mad voo"}
    return 1
  rescue Jeweler::NoGitUserEmail
    $stderr.puts %{No user.email found in ~/.gitconfig. Please tell git about yourself (see http://help.github.com/git-email-settings/ for details). For example: git config --global user.email mad.vooo@gmail.com}
    return 1
  rescue Jeweler::NoGitHubUser
    $stderr.puts %{Please specify --github-username or set github.user in ~/.gitconfig (see http://github.com/blog/180-local-github-config for details). For example: git config --global github.user defunkt}
    return 1
  rescue Jeweler::FileInTheWay
    $stderr.puts "The directory #{options[:project_name]} already exists. Maybe move it out of the way before continuing?"
    return 1
  end
end