# -*- ruby -*-

$LOAD_PATH.unshift("./../glib2/lib")
require 'gnome2-raketask'

package = GNOME2Package.new do |_package|
  _package.summary = "Ruby/GTK2 is a Ruby binding of GTK+-2.x."
  _package.description = "Ruby/GTK2 is a Ruby binding of GTK+-2.x."
  _package.dependency.gem.runtime = ["atk",
                                     "pango",
                                     "gdk_pixbuf2"]
  _package.win32.packages = ["gtk+"]
  _package.win32.dependencies = []
end
package.define_tasks

class Win32HiColorIconThemeDownloader
  include Rake::DSL

  def initialize(options={})
    @base_name = "hicolor-icon-theme"
    @icon_theme_releases_url = "http://icon-theme.freedesktop.org/releases/"
    output_dir = options[:output_dir] || File.join("vendor", "local")
    @output_dir = File.expand_path(output_dir)
  end

  def download
    escaped_base_name = Regexp.escape(@base_name)
    agent = Mechanize.new
    releases_page = agent.get(@icon_theme_releases_url)
    latest_release_link = detect_latest_release_link(releases_page)

    if latest_release_link.nil?
      message = "can't find #{@base_name}: <#{@icon_theme_releases_url}>"
      raise message
    end
    click_tar_gz(latest_release_link)
  end

  private
  def detect_latest_release_link(releases_page)
    escaped_base_name = Regexp.escape(@base_name)
    releases_page.links.collect do |link|
      case link.href
      when /\A#{escaped_base_name}-([\d.]+)\.tar.gz\z/
        version = $1
        [version.split(/[\.\-]/).collect {|component| component.to_i}, link]
      else
        [[-1], nil]
      end
    end.sort_by do |normalized_version, link|
      normalized_version
    end.last[1]
  end

  def click_tar_gz(link)
    tar_gz = link.click
    tmp_dir = "tmp"
    mkdir_p(tmp_dir)
    Dir.chdir(tmp_dir) do
      open(tar_gz.filename, "wb") do |file|
        file.print(tar_gz.body)
      end
      sh("tar", "xzf", tar_gz.filename)
      Dir.chdir(File.basename(tar_gz.filename, ".tar.gz")) do
        sh("./configure", "--prefix=#{@output_dir}")
        sh("make", "install")
      end
    end
    rm_rf(tmp_dir)
  end
end

namespace :win32 do
  desc "create default gtkrc"
  task :gtkrc do
    gtkrc_path = File.join("vendor", "local", "etc", "gtk-2.0", "gtkrc")
    mkdir_p(File.dirname(gtkrc_path))
    File.open(gtkrc_path, "w") do |gtkrc|
      gtkrc.puts('gtk-theme-name = "MS-Windows"')
    end
  end

  namespace :downloader do
    task :download_hicolor_icon_theme do
      downloader = Win32HiColorIconThemeDownloader.new
      downloader.download
    end

    task :after => [:download_hicolor_icon_theme, "win32:gtkrc"]
  end
end