# -*- coding: utf-8 -*-
#######################################################################################
# Copyright © 2009 Benoît Pin <pin@cri.ensmp.fr>                                      #
# Plinn - http://plinn.org                                                            #
#                                                                                     #
#                                                                                     #
#   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 Street, Fifth Floor, Boston, MA  02110-1301, USA.   #
#######################################################################################
"""
Pricing types



"""

from Globals import Persistent
from AccessControl import ModuleSecurityInfo
from utils import Message as _
from utils import translate
from zope.globalrequest import getRequest

msecurity = ModuleSecurityInfo('Products.photoprint.price')
msecurity.declarePublic('Price')

class Price(object, Persistent) :
	"""
	Price of an object which have VAT tax.
	"""
	__allow_access_to_unprotected_subobjects__ = 1
	
	def __init__(self, taxedPrice, rate=0) :
		"""price is initialized with taxed value"""
		self._rate = float(rate)
		self._setTaxed(taxedPrice)

	@property
	def rate(self):
		return self._localeStrNum(self._rate)
	
	def _setTaxed(self, value) :
		self._taxed = value
		self._price = value / (1 + self._rate)
	
	@property
	def taxed(self) :
		return self._localeStrNum(self._taxed)
	
	@property
	def value(self) :
		return self._localeStrNum(self._price)
	
	@property
	def tax(self) :
		tax = self._rate * self._price
		return self._localeStrNum(tax)
	
	@property
	def vat(self) :
		"returns vat rate in percent"
		vat = self._rate * 100
		return self._localeStrNum(vat)
	
	def _localeStrNum(self, n) :
		i = int(n)
		if i == n :
			return str(i)
		else :
			n = str(round(n, 2))
			i, d = n.split('.')
			ds = _(u'${i}.${d}', mapping={'i':i, 'd':d}, default=n)
			return  translate(ds).encode('utf-8')
	
	def getValues(self) :
		values = {'value':self._price,
				  'taxed': self._taxed,
				  'rate':self._rate}
		return values
		
	
	def __add__(self, other) :
		taxed = self._taxed + other._taxed
		value = self._price + other._price
		rate = (taxed - value ) / float(value)
		return Price(taxed, rate)
	
	def __div__(self, other) :
		return Price(self._taxed / other, self._rate)
	
	def __mul__(self, other) :
		return Price(self._taxed * other, self._rate)
	
	def __repr__(self):
		return '%s with VAT' % self.taxed