import os

from django.conf import settings
from django.db import models
from django.db.models.functions import Lower
from django.utils.translation import gettext_lazy as _


class Category(models.Model):
    name = models.CharField(max_length=127)
    order = models.IntegerField(verbose_name=_("ordre"))
    nom_en = models.CharField(max_length=100,null=True,blank=True)
    def __str__(self):
        return self.name

    class Meta:
        verbose_name = _("Categorie")
        verbose_name_plural = _("Categories")
        ordering = ('order',)


class Partition(models.Model):
    nom = models.CharField(max_length=100)
    part = models.FileField(upload_to="partitions/")
    morceau = models.ForeignKey('PartitionSet', on_delete=models.CASCADE)

    def __str__(self):
        return self.nom

    def delete(self, *args, **kwargs):
        os.remove(os.path.join(settings.MEDIA_ROOT, self.part.name))
        super(Partition, self).delete(*args, **kwargs)

    class Meta:
        verbose_name = _('Morceau')
        verbose_name_plural = _('Morceaux')
        ordering = (Lower('nom'),)


class PartitionSet(models.Model):
    nom = models.CharField(max_length=100)
    auteur = models.CharField(max_length=100)
    category = models.ForeignKey(
        Category,
        on_delete=models.PROTECT,
        verbose_name=_("Type de partition")
    )

    infos = models.TextField(_("Infos utiles"), null=True, blank=True)
    infos_en = models.TextField("Infos utiles en anglais", null=True, blank=True)
    url = models.URLField(_("Url d'une video youtube"),null=True,blank=True, help_text= _("Dans Youtube cliquer sur partager puis importer pour récuperer la bonne adresse"))
    def __str__(self):
        return("%s - %s [%s]" % (self.nom, self.auteur, self.category))
    class Meta:
        verbose_name = _('Morceau')
        verbose_name_plural = _('Morceaux')
        ordering = (Lower('nom'),)