#!/usr/bin/env python

import os
import locale
import subprocess

import pygtk
pygtk.require('2.0')
import gtk

class Base:
  def delete_event(self, widget, event, data=None):
    return False
  
  def destroy(self, widget, data=None):
    gtk.main_quit()

  def __init__(self, tbb_version, tarball_url):
    self.version = tbb_version
    self.tarball_url = tarball_url

    self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
    self.window.set_title("Tor Browser Launcher - First Run")
    self.window.set_border_width(10)
    
    self.window.connect("delete_event", self.delete_event)
    self.window.connect("destroy", self.destroy)

    self.box = gtk.VBox(False, 20)
    self.window.add(self.box)

    self.label = gtk.Label("The first time you run the Tor Browser Launcher you need to download the Tor Browser Bundle. Would you like to download it from the following URL now?\n\n"+self.tarball_url)
    self.label.set_line_wrap(True)
    self.box.pack_start(self.label, True, True, 0)
    self.label.show()

    self.button_box = gtk.HButtonBox()
    self.button_box.set_layout(gtk.BUTTONBOX_SPREAD)
    self.box.pack_start(self.button_box, True, True, 0)
    self.button_box.show()

    self.download = gtk.Button("Download")
    self.button_box.add(self.download)
    self.download.show()

    self.exit = gtk.Button("Exit")
    self.exit.connect("clicked", self.destroy, None)
    self.button_box.add(self.exit)
    self.exit.show()

    self.box.show()
    self.window.show();
  
  def main(self):
    gtk.main()

if __name__ == "__main__":
  # current TBB version
  tbb_version = '2.3.25-2'

  # figure out the architecture
  architecture = subprocess.check_output(['arch']).strip('\n')

  # figure out the language
  available_languages = ['en-US', 'ar', 'de', 'es-ES', 'fa', 'fr', 'it', 'ko', 'nl', 'pl', 'pt-PT', 'ru', 'vi', 'zh-CN']
  language = locale.getdefaultlocale()[0].replace('_', '-')
  if language not in available_languages:
    language = language.split('-')[0]
    if language not in available_languages:
      for l in available_languages:
        if l[0:2] == language:
          language = l
  # if language isn't available, default to english
  if language not in available_languages:
    language = 'en-US'

  # make sure local directory structure is setup
  data_dir = os.getenv('HOME')+'/.torbrowser'
  download_dir = data_dir+'/download'
  tbb_dir = data_dir+'/tbb/'+architecture+'/'+language
  if os.path.exists(download_dir) == False:
    print 'making '+download_dir
    os.makedirs(download_dir)
  if os.path.exists(tbb_dir) == False:
    print 'making '+tbb_dir
    os.makedirs(tbb_dir)

  # is TBB already installed?
  tbb_start = tbb_dir+'/start-tor-browser'
  if os.path.isfile(tbb_start):
    print 'Launching '+tbb_start
    subprocess.call([tbb_start])

  else:
    print 'Starting downloader'
    tarball_url = 'https://www.torproject.org/dist/torbrowser/linux/tor-browser-gnu-linux-'+architecture+'-'+tbb_version+'-dev-'+language+'.tar.gz'
    base = Base(tbb_version, tarball_url)
    base.main()