#!/usr/bin/python

import sys
import os
import gettext
import apt
import re

from LanguageSelector.LanguageSelector import *
from LanguageSelector.CheckLanguageSupport import *

from optparse import OptionParser
from gettext import gettext as _


if __name__ == "__main__":
	parser = OptionParser()
	parser.add_option("-l", "--language", default=None,
			  help=_("target language code"))
	parser.add_option("-d", "--datadir",
			  default="/usr/share/language-selector/",
			  help=_("alternative datadir"))
	parser.add_option("-p", "--package", default=None, help=_("check for the given package(s) only -- separate packagenames by comma"))
	parser.add_option("-a", "--all", action='store_true', default=False,
			  help=_("check all available languages"))
	parser.add_option("--show-installed",
			  action='store_true', default=False,
			  help=_("show installed packages as well as missing ones"))
	(options, args) = parser.parse_args()

        # sanity check for language code
        if (options.language and 
            not re.match('^([a-z]{2,3}(_[A-Z]{2})?(@[a-z]+)?|(zh-han[st]))$', options.language)):
		print ("Error: Unsupported language code format.\n\
Supported formats: 'll' or 'lll'\n\
                   'll_CC' or 'lll_CC'\n\
                   'll@variant' or 'lll@variant'\n\
                   'll_CC@variant' or 'lll_CC@variant'\n\
Also supported are 'zh-hans' and 'zh-hant'.")
		sys.exit(1)

        cl = CheckLanguageSupport(options.datadir)
        try:
		packages = []
		if options.package:
			packages = options.package.split(',')
		missing = cl.getMissingPackages(language=options.language, all=options.all, packages=packages, showInstalled=options.show_installed)
		if missing:
			print (' '.join(sorted(missing)))
        except SoftwareIndexBroken:
            print ("%s\n%s" % (
                _("Software database is broken"),
                _("It is impossible to install or remove any software. "
                  "Please use the package manager \"Synaptic\" or run "
                  "\"sudo apt-get install -f\" in a terminal to fix "
                  "this issue at first.")))
            sys.exit(1)