/// <summary>
/// Returns the list of added files in other, removed files in other, etc. compared to this.
/// </summary>
/// <returns>A set of FolderDifferences. A folder difference of FileAdded means that Other has an added file compared to This, and vice-versa.</returns>
public IEnumerable <FolderDifference> DiffAgainst(FolderEnumeration other)
{
var thisRoot = this.FolderPath;
var otherRoot = other.FolderPath;
var thisFolderPaths = RelativeFolderPaths.ToArray();
var otherFolderPaths = other.RelativeFolderPaths.ToArray();
// TODO - Use hash map to avoid N^2 iteration via .Contains()
var thisFilePaths = RelativeFilePaths.ToArray();
var otherFilePaths = other.RelativeFilePaths.ToArray();
var missingFoldersInOther = thisFolderPaths.Where(tp => !otherFolderPaths.Contains(tp)).ToArray();
var newFoldersInOther = otherFolderPaths.Where(op => !thisFolderPaths.Contains(op)).ToArray();
var missingFilesInOther = thisFilePaths.Where(tp => !otherFilePaths.Contains(tp)).ToArray();
var newFilesInOther = otherFilePaths.Where(op => !thisFilePaths.Contains(op)).ToArray();
string FullOtherPath(string inputPath)
{
return(Path.GetFullPath(Path.Combine(other.FolderPath, inputPath)));
}
foreach (var missingFolder in missingFoldersInOther)
{
yield return new FolderDifference {
AbsolutePath = FullOtherPath(missingFolder), Type = FolderDifference.DifferenceType.FolderMissing
}
}
;
foreach (var newFolder in newFoldersInOther)
{
yield return new FolderDifference {
AbsolutePath = FullOtherPath(newFolder), Type = FolderDifference.DifferenceType.FolderAdded
}
}
;
foreach (var missingFile in missingFilesInOther)
{
yield return new FolderDifference {
AbsolutePath = FullOtherPath(missingFile), Type = FolderDifference.DifferenceType.FileMissing
}
}
;
foreach (var newFile in newFilesInOther)
{
yield return new FolderDifference {
AbsolutePath = FullOtherPath(newFile), Type = FolderDifference.DifferenceType.FileAdded
}
}
;
}
}
}
private void ProcessFile(string fileTempPath)
{
using (var image = Image.FromFile(fileTempPath))
using (var newImage = image.ResizeImage(maxDimensions))
{
var filePath = MakeDirPath(fileTempPath);
newImage.SaveJPeg(filePath, 90);
RelativeFilePaths.Add(filePath.Substring(_configuration.BasePath.Length + 1));
FullPaths.Add(filePath);
}
// remove the temp file.
File.Delete(fileTempPath);
}
