141 lines
4.7 KiB
Python
141 lines
4.7 KiB
Python
from django.core.exceptions import ValidationError
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from django.core.validators import MinValueValidator, RegexValidator
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from django.db import models, transaction
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class DownloadRelease(models.Model):
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class Platform(models.TextChoices):
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WINDOWS = "windows", "Windows"
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MACOS = "macos", "macOS"
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LINUX = "linux", "Linux"
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platform = models.CharField("平台", max_length=32, choices=Platform.choices)
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version = models.CharField("版本", max_length=64)
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file = models.FileField("安装包文件", upload_to="downloads/", blank=True)
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external_url = models.URLField("外部下载地址", blank=True)
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size_bytes = models.PositiveBigIntegerField(
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"文件大小字节数",
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null=True,
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blank=True,
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validators=[MinValueValidator(1)],
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help_text="客户端下载文件大小，单位字节；桌面端用于下载后校验。",
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)
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sha256 = models.CharField(
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"SHA256",
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max_length=64,
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blank=True,
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validators=[
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RegexValidator(
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regex=r"^[A-Fa-f0-9]{64}$",
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message="SHA256 必须是 64 位十六进制字符。",
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)
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],
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)
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is_current = models.BooleanField("当前版本", default=False)
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force_update = models.BooleanField("强制更新", default=False)
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release_notes = models.TextField("发布说明", blank=True)
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created_at = models.DateTimeField("创建时间", auto_now_add=True)
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updated_at = models.DateTimeField("更新时间", auto_now=True)
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class Meta:
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db_table = "download_release"
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verbose_name = "客户端下载版本"
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verbose_name_plural = "客户端下载版本"
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ordering = ("platform", "-is_current", "-created_at", "-id")
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indexes = [
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models.Index(
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fields=("platform", "is_current"),
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name="dl_platform_current_idx",
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),
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]
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def __str__(self):
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return f"{self.get_platform_display()} {self.version}"
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@property
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def download_url(self) -> str:
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if self.external_url:
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return self.external_url
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if self.file:
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return self.file.url
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return ""
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@property
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def has_download(self) -> bool:
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return bool(self.download_url)
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def clean(self):
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super().clean()
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if not self.file and not self.external_url:
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raise ValidationError("安装包文件和外部下载地址至少填写一个。")
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def save(self, *args, **kwargs):
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with transaction.atomic():
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super().save(*args, **kwargs)
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if self.is_current:
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type(self).objects.filter(
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platform=self.platform,
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is_current=True,
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).exclude(pk=self.pk).update(is_current=False)
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class ImportTemplate(models.Model):
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name = models.CharField("模板名称", max_length=128)
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file = models.FileField("模板文件", upload_to="import_templates/", blank=True)
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external_url = models.URLField("外部下载地址", blank=True)
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sha256 = models.CharField(
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"SHA256",
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max_length=64,
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blank=True,
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validators=[
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RegexValidator(
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regex=r"^[A-Fa-f0-9]{64}$",
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message="SHA256 必须是 64 位十六进制字符。",
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)
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],
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)
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is_current = models.BooleanField("当前模板", default=False)
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notes = models.TextField("说明", blank=True)
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created_at = models.DateTimeField("创建时间", auto_now_add=True)
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updated_at = models.DateTimeField("更新时间", auto_now=True)
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class Meta:
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db_table = "import_template"
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verbose_name = "导入模板"
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verbose_name_plural = "导入模板"
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ordering = ("-is_current", "-created_at", "-id")
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indexes = [
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models.Index(
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fields=("is_current",),
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name="it_current_idx",
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),
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]
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def __str__(self):
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return self.name
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@property
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def download_url(self) -> str:
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if self.external_url:
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return self.external_url
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if self.file:
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return self.file.url
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return ""
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@property
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def has_download(self) -> bool:
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return bool(self.download_url)
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def clean(self):
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super().clean()
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if not self.file and not self.external_url:
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raise ValidationError("模板文件和外部下载地址至少填写一个。")
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def save(self, *args, **kwargs):
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with transaction.atomic():
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super().save(*args, **kwargs)
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if self.is_current:
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type(self).objects.filter(is_current=True).exclude(pk=self.pk).update(
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is_current=False
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)
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