/*
 * 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 ai.vespa.airlift.compress;

import static java.lang.String.format;

public final class Util
{
    private Util()
    {
    }

    public static String toHumanReadableSpeed(long bytesPerSecond)
    {
        String humanReadableSpeed;
        if (bytesPerSecond < 1024 * 10L) {
            humanReadableSpeed = format("%dB/s", bytesPerSecond);
        }
        else if (bytesPerSecond < 1024 * 1024 * 10L) {
            humanReadableSpeed = format("%.1fkB/s", bytesPerSecond / 1024.0f);
        }
        else if (bytesPerSecond < 1024 * 1024 * 1024 * 10L) {
            humanReadableSpeed = format("%.1fMB/s", bytesPerSecond / (1024.0f * 1024.0f));
        }
        else {
            humanReadableSpeed = format("%.1fGB/s", bytesPerSecond / (1024.0f * 1024.0f * 1024.0f));
        }
        return humanReadableSpeed;
    }
}
