pebble-sdk.rb.template

require 'curses'

class PebbleSdk < Formula
  class Version < ::Version
    def <=> (other)
      mine = ::Version.new(self.to_s.sub('dp', 'alpha'))
      other = ::Version.new(other.to_s.sub('dp', 'alpha'))
      mine <=> other
    end
  end

  homepage 'https://developer.pebble.com'
  url "https://sdk.getpebble.com/download/__PEBBLE_SDK_VERSION__?source=homebrew"
  sha256 "__PEBBLE_SDK_SHA256__"
  version PebbleSdk::Version.new("__PEBBLE_SDK_VERSION__")

  depends_on 'freetype' => :recommended

  depends_on 'pebble-toolchain'
  depends_on 'boost-python'
  depends_on 'glib'
  depends_on 'pixman'

  __PEBBLE_SDK_REQUIREMENTS__

  def cancel_install
    Curses.close_screen
    puts "To use the Pebble SDK, you must agree to the Pebble Terms of Use and Pebble Developer License."
    puts "Cancelling installation of Pebble SDK..."
  end

  def check_license_agreement
    Curses.noecho
    Curses.init_screen    
    
    Curses.addstr("To use the Pebble SDK, you must agree to the following:\n\nPEBBLE TERMS OF USE\nhttps://developer.pebble.com/legal/terms-of-use\n\nPEBBLE DEVELOPER LICENSE\nhttps://developer.pebble.com/legal/sdk-license\n\nDo you accept the Pebble Terms of Use and the Pebble Developer License (y/n)? ")

    loop do
      case Curses.getch
        when 'y'
          break
        when 'n'
          cancel_install
          exit
      end
    end

    Curses.close_screen
  end

  def install
    check_license_agreement
    inreplace 'bin/pebble' do |s|
      # This replacement fixes a path that gets messed up because of the
      # bin.env_script_all_files call (which relocates actual pebble.py script
      # to libexec/, causing problems with the absolute path expected below).
      s.gsub! /^script_path = .*?$/m, "script_path = '#{libexec}/../pebble-tool/pebble.py'"

      # This replacement removes environment settings that were needed only
      # if installation was done with the official script
      s.gsub! /^local_python_env.*?=.*?\(.*?\)$/m, ""
      s.gsub! /^process = subprocess\.Popen\(args, shell=False, env=local_python_env\)/, "process = subprocess.Popen(args, shell=False)"
    end

    ENV["PYTHONPATH"] = lib+"python2.7/site-packages"
    ENV.prepend_create_path 'PYTHONPATH', libexec+'lib/python2.7/site-packages'
    ENV.prepend_create_path "PATH", libexec/"bin"
    install_args = [ "setup.py", "install", "--prefix=#{libexec}" ]

    %w[__PEBBLE_SDK_REQUIREMENTS_LIST__].each do |r|
      resource(r).stage { system "python", *install_args }
    end
    
    doc.install %w[Documentation Examples README.txt]
    prefix.install %w[Pebble bin pebble-tool requirements.txt version.txt]

    ln_s "#{HOMEBREW_PREFIX}/Cellar/pebble-toolchain/2.0/arm-cs-tools", "#{prefix}"

    bin.env_script_all_files(libexec+'bin', :PYTHONPATH => ENV['PYTHONPATH'])
  end

  test do
    system bin/'pebble', 'new-project', 'test'
    cd 'test' do
      # We have to remove the default /usr/local/include from the CPATH
      # because the toolchain has -Werror=poison-system-directories set
      ENV['CPATH'] = ''
      system bin/'pebble', 'build'
    end
  end

  def caveats; <<-EOS.undent
      
      Documentation can be found online at https://developer.pebble.com/docs or in
      #{doc}

      Examples can be found online at https://github.com/pebble-examples

    EOS
  end
end