#!/usr/bin/env python
# -*- coding: utf-8 -*-

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#


### i18n.py
### TODO: Describe
### $Id: $
###
### author: Carlos Neves (cn (at) sueste.net)
### (c) 2007 World Wide Workshop Foundation

import os
import gettext
import locale

import gtk, gobject

_ = lambda x: x

# Images were taken from http://www.sodipodi.com/ 
# except for korea taken from http://zh.wikipedia.org/wiki/Image:Unification_flag_of_Korea.svg

lang_name_mapping = {
  'zh_cn':(None, _('Chinese (simplified)'), 'china'),
  'zh_tw':(None, _('Chinese (traditional)'), 'china'),
  'cs':(None, _('Czech'),'czech_republic'),
  'da':(None, _('Danish'),'denmark'),
  'nl':(None, _('Dutch'), 'netherlands'),
  'en':('English', _('English'),'united_states'),
  'en_gb':('English', _('English - Great Britain'),'united_kingdom'),
  'en_us':('English', _('English - U.S.'),'united_states'),
  'fi':(None, _('Finnish'),'finland'),
  'fr':('Français', _('French'),'france'),
  'de':(None, _('German'),'germany'),
  'hu':(None, _('Hungarian'),'hungary'),
  'it':(None, _('Italian'),'italy'),
  'ja':(None, _('Japanese'),'japan'),
  'ko':(None, _('Korean'),'korea'),
  'no':(None, _('Norwegian'),'norway'),
  'pl':(None, _('Polish'),'poland'),
  'pt':('Português', _('Portuguese'),'portugal'),
  'pt_br':('Português do Brasil', _('Portuguese - Brazilian'),'brazil'),
  'ru':(None, _('Russian'),'russian_federation'),
  'sk':(None, _('Slovak'),'slovenia'),
  'es':('Español', _('Spanish'),'spain'),
  'sv':(None, _('Swedish'),'sweden'),
  'tr':(None, _('Turkish'),'turkey'),
  'af':(None, _('Afrikaans'), 'south_africa'),
}

class LangDetails (object):
  def __init__ (self, code, name, image, domain):
    self.code = code
    self.country_code = self.code.split('_')[0]
    self.name = name
    self.image = image
    self.domain = domain

  def guess_translation (self, fallback=False):
    self.gnutranslation = gettext.translation(self.domain, 'locale', [self.code], fallback=fallback)

  def install (self):
    self.gnutranslation.install()

  def matches (self, code, exact=True):
    if exact:
      return code.lower() == self.code.lower()
    return code.split('_')[0].lower() == self.country_code.lower()

def get_lang_details (lang, domain):
  mapping = lang_name_mapping.get(lang.lower(), None)
  if mapping is None:
    # Try just the country code
    lang = lang.split('_')[0]
    mapping = lang_name_mapping.get(lang.lower(), None)
    if mapping is None:
      return None
  if mapping[0] is None:
    return LangDetails(lang, mapping[1], mapping[2], domain)
  return LangDetails(lang, mapping[0], mapping[2], domain)

def list_available_translations (domain):
  rv = [get_lang_details('en', domain)]
  rv[0].guess_translation(True)
  if not os.path.isdir('locale'):
    return rv
  for i,x in enumerate([x for x in os.listdir('locale') if os.path.isdir('locale/' + x) and not x.startswith('.')]):
    try:
      details = get_lang_details(x, domain)
      if details is not None:
        details.guess_translation()
        rv.append(details)
    except:
      raise
      pass
  return rv

class LanguageComboBox (gtk.ComboBox):
  def __init__ (self, domain):
    liststore = gtk.ListStore(gobject.TYPE_STRING)
    gtk.ComboBox.__init__(self, liststore)

    self.cell = gtk.CellRendererText()
    self.pack_start(self.cell, True)
    self.add_attribute(self.cell, 'text', 0)

    self.translations = list_available_translations(domain)
    for i,x in enumerate(self.translations):
      liststore.insert(i+1, (gettext.gettext(x.name), ))
    self.connect('changed', self.install)

  def modify_bg (self, state, color):
    setattr(self.cell, 'background-gdk',color)
    setattr(self.cell, 'background-set',True)

  def install (self, *args):
    if self.get_active() > -1:
      self.translations[self.get_active()].install()
    else:
      code, encoding = locale.getdefaultlocale()
      if code is None:
        code = 'en'
      # Try to find the exact translation
      for i,t in enumerate(self.translations):
        if t.matches(code):
          self.set_active(i)
          break
      if self.get_active() < 0:
        # Failed, try to get the translation based only in the country
        for i,t in enumerate(self.translations):
          if t.matches(code, False):
            self.set_active(i)
            break
      if self.get_active() < 0:
        # nothing found, select first translation
        self.set_active(0)
    # Allow for other callbacks
    return False

###
def gather_other_translations ():
  from glob import glob
  lessons = filter(lambda x: os.path.isdir(x), glob('lessons/*'))
  lessons = map(lambda x: os.path.basename(x), lessons)
  lessons = map(lambda x: x[0].isdigit() and x[1:] or x, lessons)
  images = filter(lambda x: os.path.isdir(x), glob('images/*'))
  images = map(lambda x: os.path.basename(x), images)
  f = file('i18n_misc_strings.py', 'w')
  for e in images+lessons:
    f.write('_("%s")\n' % e)
  f.close()