import re

from django.contrib.auth.models import AbstractUser
from django.core import validators
from django.db import models
from django.utils.translation import ugettext_lazy as _

from emissions.models import Emission, Episode, NewsItem, NewsCategory, SoundFile

class User(AbstractUser):
    emissions = models.ManyToManyField(Emission, null=True, blank=True)
    news_categories = models.ManyToManyField(NewsCategory, null=True, blank=True)

    phone = models.CharField(_('Phone'), max_length=20, null=True, blank=True)
    mobile = models.CharField(_('Mobile'), max_length=20, null=True, blank=True)

    class Meta:
        ordering = ['first_name', 'last_name']

    def can_manage(self, object):
        if self.is_staff:
            return True
        if isinstance(object, Emission):
            return self.has_perm('emissions.change_emission') or object in self.emissions.all()
        if isinstance(object, Episode):
            return self.has_perm('emissions.change_episode') or object.emission in self.emissions.all()
        if isinstance(object, SoundFile):
            return self.has_perm('emissions.change_soundfile') or object.episode.emission in self.emissions.all()
        if isinstance(object, NewsItem):
            return self.has_perm('emissions.change_newsitem') or object.emission in self.emissions.all()
        return False

    def __unicode__(self):
        s = super(User, self).__unicode__()
        if self.mobile:
            return '%s (%s)' % (s, self.mobile)
        if self.phone:
            return '%s (%s)' % (s, self.phone)
        return s