/*
 * Copyright 2013-2014 Grzegorz Ligas <ligasgr@gmail.com> and other contributors
 * (see the CONTRIBUTORS file).
 *
 * 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
 *
 * http://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.intellij.xquery.runner;

import java.util.List;

public class UniqueNameGenerator {
    public UniqueNameGenerator() {
    }

    public static String generateUniqueNameUsingBaseName(String baseName, List<String> allNames) {
        if (nameIsNotTaken(baseName, allNames)) return baseName;
        int i = 1;
        do {
            String baseNameWithNumber = baseName + i;
            if (nameIsNotTaken(baseNameWithNumber, allNames)) return baseNameWithNumber;
            i++;
        } while (i < Integer.MAX_VALUE);
        return "";
    }

    private static boolean nameIsNotTaken(String name, List<String> allNames) {
        for (String existingName : allNames) {
            if (name.equals(existingName))
                return false;
        }
        return true;
    }
}