/// <summary>
/// 上传图片至OneDrive
/// </summary>
/// <param name="image">图片文件</param>
/// <returns></returns>
public async Task <OneDriveImage> UploadImage(StorageFile image, OneDriveImageGroup group)
{
if (_appFolder == null)
{
throw new UnauthorizedAccessException("You need to complete OneDrive authorization before you can upload the image");
}
var imageFolder = await GetImgSaveFolder();
var per = await image.GetBasicPropertiesAsync();
string fileId = "";
string name = "";
string extension = Path.GetExtension(image.Path);
bool isAutoRename = Convert.ToBoolean(AppTools.GetLocalSetting(AppSettings.AutoRename, "True"));
string fileName = isAutoRename ? Guid.NewGuid() + extension : image.Name.Trim();
OneDriveStorageFile cre = null;
try
{
// 这里要对文件大小进行判断，以4MB为分水岭，需要用不同的办法上传
if (per.Size < 4 * 1024 * 1024)
{
using (var stream = await image.OpenReadAsync())
{
cre = await imageFolder.StorageFolderPlatformService.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting, stream);
fileId = cre.OneDriveItem.Id;
name = cre.OneDriveItem.Name;
}
}
else
{
using (var stream = await image.OpenReadAsync())
{
cre = await imageFolder.StorageFolderPlatformService.UploadFileAsync(fileName, stream, CreationCollisionOption.ReplaceExisting, 320 * 1024);
fileId = cre.OneDriveItem.Id;
name = cre.OneDriveItem.Name;
}
}
string link = LinkConvert(fileId);
var item = new OneDriveImage(name, await AppTools.ConvertFileToImage(image), group, link, fileId);
return(item);
}
catch (Exception)
{
return(null);
}
}
/// <summary>
/// 修改某图片名
/// </summary>
/// <param name="image">图片</param>
/// <param name="newName">新名字</param>
/// <returns></returns>
public async Task <string> RenameImage(OneDriveImage image, string newName)
{
if (_appFolder == null)
{
throw new UnauthorizedAccessException("You need to complete OneDrive authorization before you can get this file");
}
var imageFolder = await GetImgSaveFolder();
try
{
var file = await imageFolder.GetFileAsync(image.ImageName);
await file.RenameAsync(newName);
return(newName);
}
catch (Exception)
{
return(image.ImageName);
}
}
/// <summary>
/// 删除图片
/// </summary>
/// <param name="image">图片信息</param>
/// <returns></returns>
public async Task <bool> DeleteImage(OneDriveImage image)
{
if (_appFolder == null)
{
throw new UnauthorizedAccessException("You need to complete OneDrive authorization before you can upload the image");
}
var imageFolder = await GetImgSaveFolder();
var file = await imageFolder.StorageFolderPlatformService.CreateFileAsync(image.ImageName, CreationCollisionOption.OpenIfExists);
if (file != null)
{
try
{
await file.DeleteAsync();
}
catch (Exception)
{
return(false);
}
}
return(true);
}
