# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# Mobius Forensic Toolkit
# Copyright (C) 2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021,2022,2023 Eduardo Aguiar
#
# 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, 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, see <http://www.gnu.org/licenses/>.
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
import traceback
import mobius
import pymobius
import os.path

# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# @brief Decode file
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
def decode (f):
  try:
    return decode_file (f)

  except Exception as e:
    mobius.core.logf ('WRN %s %s' % (str (e), traceback.format_exc ()))
    
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# @brief Decode data from .torrent file
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
def decode_file (f):

  # try to open file
  reader = f.new_reader ()
  if not reader:
    return

  # decode BTEncode data
  metadata = mobius.decoder.btencode (reader)

  if not 'info' in metadata:
    return

  info = metadata.get ('info')
        
  # create data object
  files = []
  name = info.get ('name').decode ('utf-8')

  if 'files' in info:

    for f_metadata in info.get ('files'):
      for path in f_metadata.get ('path', []):
        t_file = pymobius.Data ()
        t_file.size = f_metadata.get ('length')
        t_file.path = path.decode ('utf-8')
        t_file.name = os.path.basename (t_file.path)
        t_file.torrent_path = mobius.io.to_win_path (f.path)
        t_file.torrent_name = f.name
        files.append (t_file)

  else:
    t_file = pymobius.Data ()
    t_file.name = name
    t_file.path = ''
    t_file.size = info.get ('length')
    t_file.torrent_path = mobius.io.to_win_path (f.path)
    t_file.torrent_name = f.name
    files.append (t_file)

  return files
