public async Task DeleteGroupAsync(EntityDto <long> input)
{
var isSystemGroup = Enum.IsDefined(typeof(DefaultGroups), (int)input.Id);
if (isSystemGroup)
{
throw new UserFriendlyException("PictureGallery.Group.SystemGroup.CantNotDelete");
}
var pictureGroup = await _pictureManager.GetGroupByIdAsync(input.Id);
//无法删除系统分组
if (pictureGroup.IsSystemGroup)
{
throw new UserFriendlyException("PictureGallery.Group.SystemGroup.CantNotDelete");
}
var pictures = await _pictureManager.Pictures.Where(p => p.GroupId == pictureGroup.Id).ToListAsync();
pictures.Each(t => t.GroupId = 0);
await _pictureManager.DeleteGroupAsync(pictureGroup);
}