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/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */
package org.elasticsearch.test;

import org.junit.Assert;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.attribute.PosixFileAttributeView;
import java.nio.file.attribute.PosixFilePermission;
import java.util.EnumSet;
import java.util.Set;

/** Stores the posix attributes for a path and resets them on close. */
public class PosixPermissionsResetter implements AutoCloseable {
    private final PosixFileAttributeView attributeView;
    private final Set permissions;

    public PosixPermissionsResetter(Path path) throws IOException {
        attributeView = Files.getFileAttributeView(path, PosixFileAttributeView.class);
        Assert.assertNotNull(attributeView);
        permissions = attributeView.readAttributes().permissions();
    }

    @Override
    public void close() throws IOException {
        attributeView.setPermissions(permissions);
    }

    public void setPermissions(Set newPermissions) throws IOException {
        attributeView.setPermissions(newPermissions);
    }

    public Set getCopyPermissions() {
        return EnumSet.copyOf(permissions);
    }
}