public ImageDetail DeriveManipulatedImage(string relativePath, string originalExtension, Manipulation imageManipulation)
{
var derivedFileName = imageManipulation.GetDerivedFileName(relativePath);
var mimeType = GetMimeType(Path.GetExtension(relativePath));
if (!String.IsNullOrWhiteSpace(originalExtension))
{
relativePath = ReplaceExtension(relativePath, originalExtension);
}
var originPath = Path.Combine(this.SourceDirectory, relativePath);
if (System.IO.File.Exists(originPath))
{
var newFileDirectory = Path.Combine(this.DerivedDirectory, relativePath);
var newFilePath = Path.Combine(newFileDirectory, derivedFileName);
var derivedFolderCreated = new DirectoryInfo(newFileDirectory).CreationTime;
var originalFileModified = new FileInfo(originPath).LastWriteTime;
if (Directory.Exists(newFileDirectory) && (originalFileModified > derivedFolderCreated))
{
Directory.Delete(newFileDirectory, true);
}
if (File.Exists(newFilePath))
{
return(new ImageDetail(newFilePath, mimeType));
}
if (!Directory.Exists(newFileDirectory))
{
Directory.CreateDirectory(newFileDirectory);
}
imageManipulation.Manipulate(originPath, newFilePath);
return(new ImageDetail(newFilePath, mimeType));
}
throw new FileNotFoundException();
}
