/*******************************************************************************
 * Copyright (c) 2000, 2017 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *

 *******************************************************************************/
package org.eclipse.dltk.core.manipulation;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.mapping.IResourceChangeDescriptionFactory;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.dltk.core.DLTKCore;
import org.eclipse.dltk.core.IMember;
import org.eclipse.dltk.core.ISourceModule;
import org.eclipse.dltk.core.ModelException;
import org.eclipse.dltk.internal.corext.refactoring.RefactoringCoreMessages;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
import org.eclipse.ltk.core.refactoring.participants.ResourceChangeChecker;
import org.eclipse.ltk.internal.core.refactoring.Resources;

@SuppressWarnings("restriction")
public class RefactoringChecks {

	public static RefactoringStatus validateModifiesFiles(IFile[] filesToModify, Object context) {
		RefactoringStatus result = new RefactoringStatus();
		IStatus status = Resources.checkInSync(filesToModify);
		if (!status.isOK())
			result.merge(RefactoringStatus.create(status));
		status = Resources.makeCommittable(filesToModify, context);
		if (!status.isOK()) {
			result.merge(RefactoringStatus.create(status));
			if (!result.hasFatalError()) {
				result.addFatalError(RefactoringCoreMessages.Checks_validateEdit);
			}
		}
		return result;
	}

	public static RefactoringStatus checkIfCuBroken(IMember member) throws ModelException {
		ISourceModule cu = (ISourceModule) DLTKCore.create(member.getSourceModule().getResource());
		if (cu == null)
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.Checks_cu_not_created);
		else if (!cu.isStructureKnown())
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.Checks_cu_not_parsed);
		return new RefactoringStatus();
	}

	public static void addModifiedFilesToChecker(IFile[] filesToModify, CheckConditionsContext context) {
		ResourceChangeChecker checker = context.getChecker(ResourceChangeChecker.class);
		IResourceChangeDescriptionFactory deltaFactory = checker.getDeltaFactory();

		for (int i = 0; i < filesToModify.length; i++) {
			deltaFactory.change(filesToModify[i]);
		}
	}
}