public async Task <bool> Exists(ImageFileIdentity imageFileIdentity)
{
var fileIdentity = imageFileIdentity.GetFileIdentity();
var exists = await this.LocalFileInfoRepository.Exists(fileIdentity);
return(exists);
}
public async Task <FileFormat> GetImageFileFormat(ImageFileIdentity imageFileIdentity)
{
var fileIdentity = imageFileIdentity.GetFileIdentity();
var fileFormat = await this.LocalFileInfoRepository.GetFileFormat(fileIdentity);
return(fileFormat);
}
public async Task Delete(ImageFileIdentity imageFileIdentity)
{
var uniqueImageFileName = imageFileIdentity.GetUniqueFileName();
var uniqueImageFilePath = this.GetUniqueImageFilePath(uniqueImageFileName);
// The multiple tasks are sequentially awaited to allow failures to preserve the sequence of events in case of failure.
// (The alternative would have been to Task.WhenAll() the various tasks, which would be simultaneous, but would lead to situations where things might get out of whack in case of failure.)
// Delete the image file.
await FileHelper.DeleteAsync(uniqueImageFilePath.Value);
// Remove the local file info.
var fileIdentity = imageFileIdentity.GetFileIdentity();
await this.LocalFileInfoRepository.Delete(fileIdentity);
// Delete the original image name mapping.
await this.OriginalFileNameMappingRepository.Delete(uniqueImageFileName);
}