import cms_pages

import hashlib

from decimal import Decimal

from django import template

from django.conf import settings

from django.contrib.staticfiles.templatetags import staticfiles

from easy_thumbnails.files import get_thumbnailer

from symposion.conference import models as conference_models

from symposion.schedule.models import Track

CONFERENCE_ID = settings.CONFERENCE_ID

register = template.Library()

@register.simple_tag(takes_context=True)

def speaker_photo(context, speaker, size):

    ''' Provides the speaker profile, or else fall back to libravatar or gravatar. '''

    if speaker.photo:

        thumbnailer = get_thumbnailer(speaker.photo)

        thumbnail_options = {'crop': True, 'size': (size, size)}

        thumbnail = thumbnailer.get_thumbnail(thumbnail_options)

        return thumbnail.url

    else:

        email = speaker.user.email.encode("utf-8")

        md5sum = hashlib.md5(email.strip().lower()).hexdigest()

        return url

@register.simple_tag()

def define(value):

    return value

@register.simple_tag()

def presentation_bg_number(presentation, count):

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

@register.filter()

def gst(amount):

    two_places = Decimal(10) ** -2

    return Decimal(amount / 11).quantize(two_places)

@register.simple_tag()

def conference_name():

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

@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