/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.shell.util;

import static java.lang.Integer.parseInt;
import static java.lang.String.format;

import org.neo4j.driver.exceptions.Neo4jException;

@SuppressWarnings({"WeakerAccess", "unused"})
public final class Versions {

    private Versions() {
        throw new UnsupportedOperationException("Don't instantiate");
    }

    public static int majorVersion(String version) {
        return version(version).major();
    }

    public static int minorVersion(String version) {
        return version(version).minor();
    }

    public static int patch(String version) {
        return version(version).patch();
    }

    public static Version version(String version) {
        if (version == null) {
            throw new AssertionError("null is not a valid version string");
        }
        if (version.isEmpty()) {
            return new Version(0, 0, 0);
        }
        // remove -alpha, and -beta etc
        int offset = version.indexOf("-");
        if (offset > 0) {
            version = version.substring(0, offset);
        }
        String[] split = version.split("\\.");
        switch (split.length) {
            case 1:
                return new Version(parseInt(split[0]), 0, 0);
            case 2:
                return new Version(parseInt(split[0]), parseInt(split[1]), 0);
            case 3:
                return new Version(parseInt(split[0]), parseInt(split[1]), parseInt(split[2]));
            default:
                throw new AssertionError(
                        format("%s is not a proper version string, it should be of the form X.Y.Z ", version));
        }
    }

    public static boolean isPasswordChangeRequiredException(Neo4jException e) {
        return "Neo.ClientError.Security.CredentialsExpired".equalsIgnoreCase(e.code());
    }
}
