# Author: Nic Wolfe <nic@wolfeden.ca>
# URL: http://code.google.com/p/sickbeard/
#
# This file is part of Sick Beard.
#
# Sick Beard 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 3 of the License, or
# (at your option) any later version.
#
# Sick Beard 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 Sick Beard.  If not, see <http://www.gnu.org/licenses/>.

import os

from sickbeard import logger
import sickbeard

# This module tries to deal with the apparently random behavior of python when dealing with unicode <-> utf-8
# encodings. It tries to just use unicode, but if that fails then it tries forcing it to utf-8. Any functions
# which return something should always return unicode.

def fixStupidEncodings(x, silent=False):
    if type(x) == str:
        try:
            return x.decode(sickbeard.SYS_ENCODING)
        except UnicodeDecodeError:
            logger.log(u"Unable to decode value: "+repr(x), logger.ERROR)
            return None
    elif type(x) == unicode:
        return x
    else:
        logger.log(u"Unknown value passed in, ignoring it: "+str(type(x))+" ("+repr(x)+":"+repr(type(x))+")", logger.DEBUG if silent else logger.ERROR)
        return None

    return None

def fixListEncodings(x):
    if type(x) != list:
        return x
    else:
        return filter(lambda x: x != None, map(fixStupidEncodings, x))


def ek(func, *args):
    result = None

    if os.name == 'nt':
        result = func(*args)
    else:
        result = func(*[x.encode(sickbeard.SYS_ENCODING) if type(x) in (str, unicode) else x for x in args])

    if type(result) == list:
        return fixListEncodings(result)
    elif type(result) == str:
        return fixStupidEncodings(result)
    else:
        return result
