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 Transmitters(models.Model):
    full_name = models.CharField(max_length=255)
    birth_year_hijri = models.IntegerField(verbose_name="Birth Year (Hijri)")
    death_year_hijri = models.IntegerField(verbose_name="Death Year (Hijri)")
    description = models.TextField(blank=True, null=True, verbose_name="Description")
    status = models.CharField(max_length=50, verbose_name=_('status'))
    status_color = models.CharField(max_length=25, verbose_name=_('Display Status Color'))
    thumbnail = FilerImageField(related_name="+", on_delete=models.CASCADE, help_text=_(
        'image allowed'
    ), null=True, blank=True)

    def __str__(self):
        return self.full_name


class HadisTransmitter(models.Model):
    hadis = models.ForeignKey(
        "hadis.Hadis",
        on_delete=models.CASCADE,
        verbose_name=_('hadis'),
        related_name='transmitters'
    )
    transmitter = models.ForeignKey(
        Transmitters,
        on_delete=models.CASCADE,
        verbose_name=_('transmitter'),
        related_name='hadises'
    )
    description = models.TextField(verbose_name=_('description'), blank=True, null=True)
    order = models.PositiveIntegerField(
        default=0,
        verbose_name=_('Order'),
        help_text=_('Order in the chain of transmission')
    )
    created_at = models.DateTimeField(auto_now_add=True, verbose_name=_('created at'))

    class Meta:
        verbose_name = _('Hadis Transmitter')
        verbose_name_plural = _('Hadis Transmitters')
        ordering = ('hadis', 'order')
        unique_together = ('hadis', 'transmitter', 'order')

    def __str__(self):
        return f'{self.hadis.number} - {self.transmitter.full_name} ({self.order})'