from easy_thumbnails.files import get_thumbnailer

from registrasion.templatetags import registrasion_tags

from symposion.conference import models as conference_models

from symposion.schedule.models import Track

CONFERENCE_ID = settings.CONFERENCE_ID

register = template.Library()

@register.assignment_tag()

def classname(ob):

def presentation_bg_number(presentation, count):

    return sum(ord(i) for i in presentation.title) % count

@register.filter()

def gst(amount):

    value_no_gst = Decimal(amount / (1 + GST_RATE))

    return Decimal(amount - value_no_gst).quantize(Decimal('0.01'))

@register.simple_tag()

def conference_name():

    return conference_models.Conference.objects.get(id=CONFERENCE_ID).title

@register.filter()

def day_has_tracks(timetable, day):

    try:

        track_names = day.track_set.all()

        has_tracks = True

    except Track.DoesNotExist:

        has_tracks = False

    return len(track_names)

@register.filter()

def trackname(room, day):

    try:

        track_name = room.track_set.get(day=day).name

    except Track.DoesNotExist:

        track_name = None

    return track_name

@register.simple_tag(takes_context=True)

def ticket_type(context):

    # Default to purchased ticket type (only item from category 1)

    items = registrasion_tags.items_purchased(context, 1)