module Gem2arch

# File lib/gem2arch.rb, line 8
def self.start
  options = { 
    gem:        nil,
    version:    nil
  }

  OptionParser.new do |opts|
    opts.banner = "gem2arch 0.0.7 (https://www.github.com/codemunchies/gem2arch)"
    opts.banner += "Usage: gem2arch [options]"

    opts.on("--build [STRING]", "Gem to download and generate PKGBUILD for") do |gem|
      options[:gem] = gem
    end

    opts.on("--version [STRING]", "OPTIONAL: target specific version") do |ver|
      options[:version] = ver
    end
  end.parse!

  if options[:gem]
    # Store paths
    tmpdir = Dir.mktmpdir
    basedir = Dir.pwd

    begin
      # Get [Gem2arch] object
      gem2arch = Gem2arch::Core.new
      # Jump into tmpdir
      Dir.chdir( "#{tmpdir}" )
      # Download the gem and store spec information
      gemspec = gem2arch.download( options[:gem], options[:version] )
      # Generate the PKGBUILD
      gem2arch.build( gemspec )
      # Move the PKGBUILD from tmpdir
      FileUtils.mv( 'PKGBUILD', "#{basedir}" )
    ensure
      # Clean up
      FileUtils.remove_entry_secure tmpdir
    end
  else
    # Something
  end
end