/*
 * Copyright 2021 - 2023 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.rewrite.resource;

import java.io.BufferedWriter;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;

public class ProjectResourceSerializer {

	public void writeChanges(InternalProjectResource projectResource) {

		if (projectResource != null && projectResource.hasChanges()) {

			Path absolutePath = projectResource.getAbsolutePath();

			if (projectResource.isDeleted()) {
				try {
					if (Files.exists(absolutePath)) {
						Files.delete(absolutePath);
					}
				}
				catch (IOException ioe) {
					throw new RuntimeException("Can't delete file [" + absolutePath + "]", ioe);
				}
			}
			else {
				try {
					Files.createDirectories(absolutePath.getParent());
				}
				catch (IOException e) {
					throw new RuntimeException(e);
				}

				try (BufferedWriter sourceFileWriter = Files.newBufferedWriter(absolutePath)) {
					String newSource = projectResource.print();
					sourceFileWriter.write(newSource);
					projectResource.resetHasChanges();
				}
				catch (IOException ioe) {
					throw new RuntimeException("Can't write back changes in [" + absolutePath + "]", ioe);
				}
			}

		}
	}

}
