/**
 * Makes a CodeAction to create a file and add content to the file.
 * 
 * @param title      The displayed name of the CodeAction
 * @param docURI     The file to create
 * @param content    The text to put into the newly created document.
 * @param diagnostic The diagnostic that this CodeAction will fix
 */
public static CodeAction createFile(String title, String docURI, String content, Diagnostic diagnostic) {

	List<Either<TextDocumentEdit, ResourceOperation>> actionsToTake = new ArrayList<>(2);

	// 1. create an empty file
	actionsToTake.add(Either.forRight(new CreateFile(docURI, new CreateFileOptions(false, true))));

	// 2. update the created file with the given content
	VersionedTextDocumentIdentifier identifier = new VersionedTextDocumentIdentifier(docURI, 0);
	TextEdit te = new TextEdit(new Range(new Position(0, 0), new Position(0, 0)), content);
	actionsToTake.add(Either.forLeft(new TextDocumentEdit(identifier, Collections.singletonList(te))));

	WorkspaceEdit createAndAddContentEdit = new WorkspaceEdit(actionsToTake);

	CodeAction codeAction = new CodeAction(title);
	codeAction.setEdit(createAndAddContentEdit);
	codeAction.setDiagnostics(Collections.singletonList(diagnostic));
	codeAction.setKind(CodeActionKind.QuickFix);

	return codeAction;
}
 

private static void convertCreateCompilationUnitChange(WorkspaceEdit edit, CreateCompilationUnitChange change) {
	ICompilationUnit unit = change.getCu();
	CreateFile createFile = new CreateFile();
	createFile.setUri(JDTUtils.toURI(unit));
	createFile.setOptions(new CreateFileOptions(false, true));
	edit.getDocumentChanges().add(Either.forRight(createFile));
	InsertEdit textEdit = new InsertEdit(0, change.getPreview());
	convertTextEdit(edit, unit, textEdit);
}
 

public static Either<TextDocumentEdit, ResourceOperation> createFile(String uri, boolean overwrite) {
	CreateFileOptions options = new CreateFileOptions();
	options.setIgnoreIfExists(!overwrite);
	options.setOverwrite(overwrite);
	return Either.forRight(new CreateFile(uri, options));
}
 

private static void convertRenamePackcageChange(WorkspaceEdit edit, RenamePackageChange packageChange) throws CoreException {
	IPackageFragment pack = (IPackageFragment) packageChange.getModifiedElement();
	IPath newPackageFragment = new Path(packageChange.getNewName().replace('.', IPath.SEPARATOR));
	IPath oldPackageFragment = new Path(packageChange.getOldName().replace('.', IPath.SEPARATOR));
	IPath newPackagePath = pack.getResource().getLocation().removeLastSegments(oldPackageFragment.segmentCount()).append(newPackageFragment);
	if (packageChange.getRenameSubpackages()) {
		IPackageFragment[] allPackages = JavaElementUtil.getPackageAndSubpackages(pack);
		String oldPrefix = packageChange.getOldName();
		for (IPackageFragment currentPackage : allPackages) {
			String newPkgName = packageChange.getNewName() + currentPackage.getElementName().substring(oldPrefix.length());
			//update package's declaration
			convertPackageUpdateEdit(currentPackage.getCompilationUnits(), newPkgName, edit);
		}

		RenameFile renameFile = new RenameFile();
		renameFile.setNewUri(ResourceUtils.fixURI(newPackagePath.toFile().toURI()));
		renameFile.setOldUri(ResourceUtils.fixURI(pack.getResource().getRawLocationURI()));
		edit.getDocumentChanges().add(Either.forRight(renameFile));
	} else {
		//update package's declaration
		convertPackageUpdateEdit(pack.getCompilationUnits(), packageChange.getNewName(), edit);
	
		CreateFile createFile = new CreateFile();
		createFile.setUri(ResourceUtils.fixURI(newPackagePath.append(TEMP_FILE_NAME).toFile().toURI()));
		createFile.setOptions(new CreateFileOptions(false, true));
		edit.getDocumentChanges().add(Either.forRight(createFile));

		for (ICompilationUnit unit : pack.getCompilationUnits()) {
			RenameFile cuResourceChange = new RenameFile();
			cuResourceChange.setOldUri(ResourceUtils.fixURI(unit.getResource().getLocationURI()));
			IPath newCUPath = newPackagePath.append(unit.getPath().lastSegment());
			cuResourceChange.setNewUri(ResourceUtils.fixURI(newCUPath.toFile().toURI()));
			edit.getDocumentChanges().add(Either.forRight(cuResourceChange));
		}

		// Workaround: https://github.com/Microsoft/language-server-protocol/issues/272
		DeleteFile deleteFile = new DeleteFile();
		deleteFile.setUri(ResourceUtils.fixURI(newPackagePath.append(TEMP_FILE_NAME).toFile().toURI()));
		deleteFile.setOptions(new DeleteFileOptions(false, true));
		edit.getDocumentChanges().add(Either.forRight(deleteFile));

	}
}
 

private static void convertCreateFileChange(WorkspaceEdit edit, CreateFileChange createFileChange) {
	CreateFile createFile = new CreateFile();
	createFile.setUri(ResourceUtils.fixURI(createFileChange.getPath().toFile().toURI()));
	createFile.setOptions(new CreateFileOptions(false, true));
	edit.getDocumentChanges().add(Either.forRight(createFile));
}
 

public CreateFile(@NonNull final String uri, final CreateFileOptions options) {
  super(ResourceOperationKind.Create);
  this.uri = Preconditions.<String>checkNotNull(uri, "uri");
  this.options = options;
}
 

/**
 * Additional options
 */
@Pure
public CreateFileOptions getOptions() {
  return this.options;
}
 

/**
 * Additional options
 */
public void setOptions(final CreateFileOptions options) {
  this.options = options;
}