feat: shipment change && version modelize

api_v1/models.py

@@ -4,8 +4,10 @@ API v1 通用模型
 import os
 import uuid
 from django.db import models
+from django.db.models import Q
 from django.contrib.auth import get_user_model
 from django.db.models.fields.json import KeyTextTransform
+from django.utils import timezone
 from flower.common import ModelBase
 from basic_info import models as basic_info_models
 
@@ -28,6 +30,53 @@ def upload_file_path(instance, filename):
     return f"uploads/{now.year}/{now.month:02d}/{now.day:02d}/{random_filename}"
 
 
+def app_version_file_path(instance, filename):
+    ext = os.path.splitext(filename)[1].lower()
+    random_filename = f"{uuid.uuid4().hex}{ext}"
+    return f"app_versions/{random_filename}"
+
+
+class AppVersion(ModelBase):
+    major = models.PositiveIntegerField(default=0, verbose_name='主版本号')
+    minor = models.PositiveIntegerField(default=0, verbose_name='次版本号')
+    build = models.PositiveIntegerField(default=0, verbose_name='构建号')
+    package_file = models.FileField(
+        upload_to=app_version_file_path,
+        max_length=500,
+        blank=True,
+        null=True,
+        verbose_name='安装包文件',
+        help_text='可通过 Admin 上传，保存后会自动写入下载地址',
+    )
+    download_url = models.URLField(max_length=2048, blank=True, verbose_name='下载地址')
+    force = models.BooleanField(default=False, verbose_name='是否强制更新')
+    publish_date = models.DateField(default=timezone.localdate, verbose_name='发布日期')
+    message = models.TextField(blank=True, verbose_name='更新说明')
+    is_current = models.BooleanField(default=False, db_index=True, verbose_name='当前版本')
+
+    class Meta:
+        verbose_name = 'App版本'
+        verbose_name_plural = 'App版本'
+        ordering = ['-is_current', '-created_at']
+        constraints = [
+            models.UniqueConstraint(
+                fields=['is_current'],
+                condition=Q(is_current=True),
+                name='uniq_current_app_version',
+            ),
+        ]
+
+    def __str__(self):
+        return f'{self.major}.{self.minor}.{self.build}'
+
+    def save(self, *args, **kwargs):
+        if self.package_file:
+            self.download_url = self.package_file.url
+        if self.is_current:
+            AppVersion.objects.exclude(pk=self.pk).filter(is_current=True).update(is_current=False)
+        super().save(*args, **kwargs)
+
+
 class UploadedFile(ModelBase):
     """
     通用文件上传记录