/// <summary>
/// 获取对象封面图片
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public async Task <GetObjectImagesListDto> GetObjectCoverImage(SetCoverInputDto input)
{
var objectType = Enum.Parse <AttachmentObjectTypes>(input.ObjectType);
var objectAttachmentInfo = await _objectAttachmentInfoRepository.GetAllIncluding(p => p.AttachmentInfo)
.Where(p =>
p.ObjectId == input.ObjectId && p.ObjectType == objectType &&
p.AttachmentInfo.AttachmentType == AttachmentTypes.Image)
.FirstOrDefaultAsync(a => a.IsCover);
if (objectAttachmentInfo == null)
{
return(new GetObjectImagesListDto());
}
return(new GetObjectImagesListDto
{
Id = objectAttachmentInfo.AttachmentInfo.Id,
Name = objectAttachmentInfo.AttachmentInfo.Name,
FileLength = objectAttachmentInfo.AttachmentInfo.FileLength,
Url = objectAttachmentInfo.AttachmentInfo.Url,
IsCover = objectAttachmentInfo.IsCover
});
}
/// <summary>
/// 设置封面
/// </summary>
/// <param name="input">The input.</param>
/// <returns></returns>
public async Task SetCover(SetCoverInputDto input)
{
var objectType = Enum.Parse <AttachmentObjectTypes>(input.ObjectType);
var objectAttachmentInfos = await _objectAttachmentInfoRepository.GetAllIncluding(p => p.AttachmentInfo)
.Where(p =>
p.ObjectId == input.ObjectId && p.ObjectType == objectType &&
p.AttachmentInfo.AttachmentType == AttachmentTypes.Image)
.ToListAsync();
var objectAttachment = objectAttachmentInfos.FirstOrDefault(a => a.IsCover);
if (objectAttachment != null)
{
objectAttachment.IsCover = false;
}
var setObjectAttachment =
objectAttachmentInfos.FirstOrDefault(a => a.AttachmentInfo.Url == input.AttachmentUrl);
if (setObjectAttachment == null)
{
throw new UserFriendlyException();
}
setObjectAttachment.IsCover = true;
}
