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/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you 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 co.elastic.apm.agent.tracer.configuration;

import org.stagemonitor.configuration.ConfigurationOption;
import org.stagemonitor.configuration.converter.AbstractValueConverter;

public class TimeDurationValueConverter extends AbstractValueConverter {

    private final String defaultDurationSuffix;
    private final boolean canUseMicros;

    private TimeDurationValueConverter(String defaultDurationSuffix, boolean canUseMicros) {
        this.defaultDurationSuffix = defaultDurationSuffix;
        this.canUseMicros = canUseMicros;
    }

    public static TimeDurationValueConverter withDefaultDuration() {
        return new TimeDurationValueConverter("", false);
    }

    @Deprecated
    public static TimeDurationValueConverter withDefaultDuration(String defaultDurationSuffix) {
        return new TimeDurationValueConverter(defaultDurationSuffix, false);
    }

    public static TimeDurationValueConverter withDefaultFineDuration() {
        return new TimeDurationValueConverter("", true);
    }

    public static ConfigurationOption.ConfigurationOptionBuilder durationOption(String defaultDuration) {
        return ConfigurationOption.builder(new TimeDurationValueConverter(defaultDuration, false), TimeDuration.class);
    }

    public static ConfigurationOption.ConfigurationOptionBuilder fineDurationOption() {
        return ConfigurationOption.builder(new TimeDurationValueConverter("", true), TimeDuration.class);
    }

    @Override
    public TimeDuration convert(String s) throws IllegalArgumentException {
        if (!s.endsWith("us") && !s.endsWith("ms") && !s.endsWith("s") && !s.endsWith("m")) {
            s += defaultDurationSuffix;
        }
        return canUseMicros ? TimeDuration.ofFine(s) : TimeDuration.of(s);
    }

    @Override
    public String toString(TimeDuration value) {
        return value.toString();
    }

    public boolean isCanUseMicros() {
        return canUseMicros;
    }
}