from registrasion.controllers.category import CategoryController

from registrasion.controllers.item import ItemController

from registrasion.templatetags import registrasion_tags

from decimal import Decimal

from django import template

from django.conf import settings

from django.db.models import Sum

from urllib import urlencode  # TODO: s/urllib/six.moves.urllib/

register = template.Library()

@register.simple_tag(takes_context=True)

def donation_income(context, invoice):

    ''' Calculates the donation income for a given invoice.

    Returns:

        the donation income.

    '''

    # 15% (FSA) goes to Conservancy; 85% is real goods

            if line.product.name.startswith("Unaffiliated Individual"):

                # Includes full price & discounts

                rbi.append(line.total_price * fsa_rate)

            else:

                if line.total_price > 0:

                    rbi.append(rbi_full_ticket)

                elif line.total_price < 0:

                    rbi.append(rbi_early_bird_discount)

        elif line.product.category.name == "T-Shirt":

            rbi.append(line.total_price * fsa_rate)

    donation = max(Decimal('0'), (invoice.value - sum(rbi)))

# TODO: include van/de/van der/de la/etc etc etc

@register.simple_tag

def name_split(name, split_characters=None):

    tokens = name.split()

    if split_characters is None or len(name) > split_characters:

        even_split = int((len(tokens) + 1) / 2)  # Round up.

    else:

        even_split = len(tokens)