from django.contrib.contenttypes.models import ContentType
from django.core.urlresolvers import reverse
from django.db import models


class AdminURLMixin(object):
    def get_admin_url(self):
        content_type = ContentType.objects.get_for_model(self.__class__)
        return reverse("admin:%s_%s_change" % (
            content_type.app_label,
            content_type.model),
            args=(self.id,))

class Authority(models.Model, AdminURLMixin):

    class Meta:
        ordering = ['name']
        verbose_name = 'Authorité'

    name = models.CharField(max_length=200)
    slug = models.SlugField(unique=True)

    def __str__(self):
        return self.name

class ReferenceType(models.Model, AdminURLMixin):

    class Meta:
        ordering = ['name']
        verbose_name = 'Type de référence'

    name = models.CharField(max_length=200, verbose_name='Type de référence')
    slug = models.SlugField(unique=True)

    def __str__(self):
        return self.name

class Reference(models.Model, AdminURLMixin):

    class Meta:
        ordering = ['issued_date']
        verbose_name = 'Référence'

    identifier = models.CharField(max_length=200, blank=True, verbose_name='Identifiant')
    number = models.CharField(max_length=200, blank=True, verbose_name='Numéro')
    authority = models.ForeignKey('Authority', null=True, help_text='L\'instance qui à produit cette référence', blank=True)
    reference_type = models.ForeignKey('ReferenceType', verbose_name='Type')
    title = models.TextField(blank=True, verbose_name='Titre')
    title_short = models.TextField(blank=True, verbose_name='Titre court')
    section = models.CharField(max_length=200, blank=True, verbose_name='Section')
    ecli = models.CharField(max_length=200, blank=True, verbose_name='E.C.L.I.')
    url = models.URLField(max_length=200, blank=True)
    comments = models.TextField(blank=True, verbose_name='Commentaires')
    issued_date = models.DateField(null=True, blank=True, verbose_name='Date de publication')
    disabled = models.BooleanField(default=False, verbose_name='Désactivé', help_text='Masque cette entrée lors de recherches')

    def __str__(self):
        return self.identifier + ' > ' + self.title_short