from datetime import timedelta, date
from django import template
from django.conf import settings
from django.utils import timezone
import locale

from ..models import COFActuPage

import re

register = template.Library()

@register.filter()
def obfuscate_mail(value):
    val = value.replace('', '-').replace('@', 'arbre').replace('.', 'pont')[1:]
    return val

@register.inclusion_tag("cofcms/calendar.html")
def calendar():
    now = timezone.now()
    month_start = date(now.year, now.month, 1)
    next_month = month_start + timedelta(days=32)
    next_month = date(next_month.year, next_month.month, 1)
    month_prestart = month_start - timedelta(days=month_start.weekday())
    month_postend = next_month + timedelta(days=(next_month.weekday()+6)%7)
    events = COFActuPage.objects.live()\
                                .filter(date_start__range=[month_prestart,
                                                           month_postend])\
                                .order_by('-date_start')
    events = list(events)
    weeks = []
    curday = month_prestart
    deltaday = timedelta(days=1)
    while curday < next_month and len(weeks)<10:
        week = []
        for k in range(7):
            curevents = []
            for k in range(len(events)-1, -1, -1):
                e = events[k]
                if e.date_start.date() > curday: break
                if (e.date_start if e.date_end is None else e.date_end).date() < curday:
                    del events[k]
                else:
                    curevents.append(e)
            day = {'day': curday.day,
                   'class': (('today ' if (curday.day == now.day
                                    and curday.month == now.month) else '')
                             + ('in ' if curday.month == now.month else 'out')
                             + ('hasevent' if len(curevents) > 0 else '')),
                   'events': curevents}
            week.append(day)
            curday += deltaday
        weeks.append(week)
    return {"events": events, "weeks": weeks}

@register.inclusion_tag("cofcms/mini_calendar.html")
def mini_calendar(event, loc):
    try:
        locale.setlocale(locale.LC_TIME, loc)
    except locale.Error:
        pass
    days = []
    today = timezone.now().date()
    date_start = event.date_start.date()
    date_end = event.date_end.date() if event.date_end else date_start
    week_start = date_start - timedelta(days=date_start.weekday())
    curday = week_start
    for i in range(7):
        days.append({'day': curday.day,
                     'hasevent': curday >= date_start and curday <= date_end,
                     'today': curday == today})
        curday += timedelta(days=1)
    return {"days": days}