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


class VideoCategory(models.Model):
    title = models.CharField(max_length=255, verbose_name=_('title'))
    slug = models.SlugField(allow_unicode=True, unique=True, verbose_name=_('slug'))

    status = models.BooleanField(default=True, verbose_name=_('status'))
    order = models.PositiveIntegerField(default=0, verbose_name=_('order'))
    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 self.title

    class Meta:
        verbose_name = _('Video Category')
        verbose_name_plural = _('Video Categories')
        ordering = ['order']


class VideoCollection(models.Model):
    title = models.CharField(max_length=255, help_text="This title will not be displayed anywhere")
    status = models.BooleanField(default=True, verbose_name=_('status'))
    created_at = models.DateTimeField(auto_now_add=True, verbose_name=_('created at'))
    updated_at = models.DateTimeField(auto_now=True, verbose_name=_('updated at'))
    videos = models.ManyToManyField(
        "Video",
        through='VideoInCollection',
        related_name='collections',
        verbose_name=_('videos'),
    )
    def __str__(self):
        return f'Collection #{self.id}/{self.title}'

    class Meta:
        verbose_name = _('Video Collection')
        verbose_name_plural = _('Video Collections')


class VideoInCollection(models.Model):
    video_collection = models.ForeignKey(
        "VideoCollection", on_delete=models.CASCADE, related_name='videos_in_collection', verbose_name=_('video collection')
    )
    video = models.ForeignKey(
        "Video", on_delete=models.CASCADE, related_name='collections_videos', verbose_name=_('video')
    )
    priority = models.PositiveIntegerField(default=0, verbose_name=_('priority'))

    def __str__(self):
        return f"{self.video_collection.title} - {self.video.title} (Priority: {self.priority})"

    class Meta:
        verbose_name = _('Video in Collection')
        verbose_name_plural = _('Videos in Collection')
        ordering = ['priority'] 


class Video(models.Model):
    class vdeo_type(models.TextChoices):
        FILE = 'file'
        YOUTUBE = 'youtube'

    title = models.CharField(max_length=255, null=True)
    slug = models.SlugField(allow_unicode=True, unique=True)
    thumbnail = FilerImageField(related_name="+", on_delete=models.SET_NULL, null=True, blank=True, help_text=_(
        'image allowed'
    ))
    description = models.TextField(null=True)
    categories = models.ManyToManyField(
        VideoCategory,
        related_name='videos',
        verbose_name=_('categories'),
        blank=True,
    )
    video_type = models.CharField(max_length=255, choices=vdeo_type.choices, default=vdeo_type.FILE)
    video_file = models.FileField(upload_to='video/videos/', null=True, blank=True)
    video_url = models.CharField(max_length=655, null=True, blank=True)
    video_time = models.TimeField()

    view_count = models.PositiveBigIntegerField(default=0, verbose_name=_('view count'))

    status = models.BooleanField(default=True, verbose_name=_('status'))

    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 self.title

    def increment_view_count(self):
        """Increment the view count for this video"""
        self.view_count += 1
        self.save(update_fields=['view_count'])
        return self.view_count


    class Meta:
        verbose_name = _('Video')
        verbose_name_plural = _('Videos')