from django.db import models
from django.utils.translation import gettext_lazy as _
from django.core.exceptions import ValidationError
from filer.fields.image import FilerImageField


class HadisTag(models.Model):
    title = models.CharField(max_length=355, verbose_name=_('title'))
    status = models.BooleanField(default=True, verbose_name=_('status'))
    
    def __str__(self):
        return f"{self.title}"




class Hadis(models.Model):
    number = models.PositiveIntegerField(verbose_name=_('number'), unique=True)
    title = models.CharField(max_length=355, verbose_name=_('title'))
    text = models.TextField(verbose_name=_('text'))
    translation = models.TextField(verbose_name=_('translation'), blank=True, default='')

    category = models.ForeignKey("hadis.HadisCategory", null=True, on_delete=models.SET_NULL, verbose_name=_('category'), )

    status = models.BooleanField(default=True, verbose_name=_('visibility'))
    created_at = models.DateTimeField(auto_now_add=True, verbose_name=_('created at'))
    updated_at = models.DateTimeField(auto_now=True, verbose_name=_('updated at'))

    def __str__(self):
        return f"<{self.number}> {self.title[:32]}"

    @property
    def get_tags(self):
        return self.tags.all().order_by('hadistagrelation__priority')

    class Meta:
        verbose_name = _('hadis')
        verbose_name_plural = _('hadises')


class HadisOverview(models.Model):
    hadis = models.OneToOneField(Hadis, on_delete=models.CASCADE, primary_key=True)
    status = models.CharField(max_length=50, verbose_name=_('status'))
    status_color = models.CharField(max_length=25, verbose_name=_('Display Status Color'))
    status_text = models.TextField(verbose_name=_('Status Text'), null=True, blank=True)
    address = models.TextField(verbose_name=_('address'), null=True, blank=True)
    links = models.JSONField(verbose_name=_('title'), null=True, blank=True, default=dict)
    tags = models.ManyToManyField("HadisTag", related_name="hadises", verbose_name=_('tags'), blank=True)
    share_link = models.CharField(max_length=255, verbose_name=_('share link'), null=True, blank=True)
    
    created_at = models.DateTimeField(auto_now_add=True, verbose_name=_('created at'))
    

class HadisReference(models.Model):
    hadis = models.ForeignKey(
        Hadis,
        on_delete=models.CASCADE,
        verbose_name=_('hadis'),
        related_name='references'
    )
    book = models.ForeignKey("library.Book", on_delete=models.SET_NULL, null=True, blank=True, verbose_name=_('book'), related_name='hadis_references')
    description = models.TextField(verbose_name=_('description'), blank=True, null=True)
    created_at = models.DateTimeField(auto_now_add=True, verbose_name=_('created at'))

    class Meta:
        verbose_name = _('Hadis Reference')
        verbose_name_plural = _('Hadis References')

    def __str__(self):
        return f'{self.hadis.number}-{self.book.title}'

class ReferenceImage(models.Model):
    reference = models.ForeignKey(HadisReference, verbose_name="Hadis Reference", on_delete=models.CASCADE)
    thumbnail = FilerImageField(
        related_name='+', on_delete=models.PROTECT, null=True, blank=True,
        verbose_name=_('thumbnail')
    )
    priority = models.IntegerField(
        default=0, 
        verbose_name=_("Priority"),
        help_text=_("Priority of the image, lower values mean higher priority.")
    )


    class Meta:
        verbose_name = _('Reference Image')
        verbose_name_plural = _('Reference Images')

    def __str__(self):
        return f'{self.reference.title}-{self.id}'
    
    def save(self, *args, **kwargs):
        if ReferenceImage.objects.filter(reference=self.reference, priority=self.priority).exists():
            ReferenceImage.objects.filter(
                reference=self.reference,
                priority__gte=self.priority
            ).update(priority=F('priority') + 1)

        super().save(*args, **kwargs)