# -*- coding: utf-8 -*-
from __future__ import absolute_import

from babel import support as babel_support
from babel import core as babel_core
from django.conf import settings
from django.template import Library
from django.utils.translation import to_locale, get_language
try:
    from pytz import timezone
except ImportError:
    timezone = None

from django_babel.middleware import get_current_locale

__all__ = [
    'datefmt', 'datetimefmt', 'timefmt', 'numberfmt', 'decimalfmt',
    'currencyfmt', 'percentfmt', 'scientificfmt',
]

register = Library()


def _get_format():
    locale = get_current_locale()
    if not locale:
        locale = babel_core.Locale.parse(to_locale(get_language()))
    if timezone:
        tzinfo = timezone(settings.TIME_ZONE)
    else:
        tzinfo = None
    return babel_support.Format(locale, tzinfo)


@register.filter
def datefmt(date=None, format='medium'):
    return _get_format().date(date, format=format)


@register.filter
def datetimefmt(datetime=None, format='medium'):
    return _get_format().datetime(datetime, format=format)


@register.filter
def timefmt(time=None, format='medium'):
    return _get_format().time(time, format=format)


@register.filter
def numberfmt(number):
    return _get_format().number(number)


@register.filter
def decimalfmt(number, format=None):
    return _get_format().decimal(number, format=format)


@register.filter
def currencyfmt(number, currency):
    return _get_format().currency(number, currency)


@register.filter
def percentfmt(number, format=None):
    return _get_format().percent(number, format=format)


@register.filter
def scientificfmt(number):
    return _get_format().scientific(number)