from django.db import models
from django.utils.translation import gettext
from mptt.models import MPTTModel, TreeForeignKey

from .uploadto import (
    generate_theme_dirname,
    upload_css_source_to,
    upload_css_to,
    upload_font_to,
    upload_image_to,
    upload_image_thumbnail_to,
)


class Theme(MPTTModel):
    parent = TreeForeignKey(
        "self", on_delete=models.PROTECT, null=True, blank=True, related_name="children"
    )
    name = models.CharField(max_length=255)
    dirname = models.CharField(max_length=8, default=generate_theme_dirname)
    is_default = models.BooleanField(default=False)
    is_active = models.BooleanField(default=False)

    version = models.CharField(max_length=255, null=True, blank=True)
    author = models.CharField(max_length=255, null=True, blank=True)
    url = models.URLField(max_length=255, null=True, blank=True)

    class MPTTMeta:
        order_insertion_by = ["-is_default", "name"]

    def __str__(self):
        if self.is_default:
            return gettext("Default Misago Theme")
        return self.name

    @property
    def level_range(self):
        return range(self.level)


class Css(models.Model):
    theme = models.ForeignKey(Theme, on_delete=models.PROTECT, related_name="css")

    name = models.CharField(max_length=255)
    url = models.URLField(max_length=255, null=True, blank=True)
    source_file = models.FileField(
        upload_to=upload_css_source_to, max_length=255, null=True, blank=True
    )
    source_hash = models.CharField(max_length=8, null=True, blank=True)
    file = models.FileField(
        upload_to=upload_css_to, max_length=255, null=True, blank=True
    )
    hash = models.CharField(max_length=8, null=True, blank=True)
    size = models.PositiveIntegerField(default=0)

    order = models.IntegerField(default=0)
    modified_on = models.DateTimeField(auto_now=True)

    class Meta:
        ordering = ["order"]

    def delete(self, *args, **kwargs):
        self.file.delete(save=False)
        super().delete(*args, **kwargs)

    def __str__(self):
        return self.name


class Font(models.Model):
    theme = models.ForeignKey(Theme, on_delete=models.PROTECT, related_name="fonts")

    name = models.CharField(max_length=255)
    file = models.FileField(upload_to=upload_font_to, max_length=255)
    hash = models.CharField(max_length=12)
    type = models.CharField(max_length=255)
    size = models.PositiveIntegerField()
    modified_on = models.DateTimeField(auto_now=True)

    class Meta:
        ordering = ["name"]

    def delete(self, *args, **kwargs):
        self.file.delete(save=False)
        super().delete(*args, **kwargs)

    def __str__(self):
        return self.name


class Image(models.Model):
    theme = models.ForeignKey(Theme, on_delete=models.PROTECT, related_name="images")

    name = models.CharField(max_length=255)
    file = models.ImageField(upload_to=upload_image_to, max_length=255, width_field="width", height_field="height")
    hash = models.CharField(max_length=8)
    type = models.CharField(max_length=255)
    width = models.PositiveIntegerField()
    height = models.PositiveIntegerField()
    size = models.PositiveIntegerField()
    thumbnail = models.ImageField(upload_to=upload_image_thumbnail_to, max_length=255)
    modified_on = models.DateTimeField(auto_now=True)

    class Meta:
        ordering = ["name"]

    def delete(self, *args, **kwargs):
        self.file.delete(save=False)
        self.thumbnail.delete(save=False)
        super().delete(*args, **kwargs)

    def __str__(self):
        return self.name