/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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 org.apache.skywalking.library.elasticsearch.requests.search;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkState;
import java.time.Duration;
import com.google.common.base.Strings;

public final class ScrollBuilder {
    private Duration contextRetention;
    private String scrollId;

    public ScrollBuilder contextRetention(Duration contextRetention) {
        checkArgument(
            contextRetention != null && !contextRetention.isNegative()
                && !contextRetention.isZero(),
            "contextRetention must be positive, but was %s", contextRetention);
        this.contextRetention = contextRetention;
        return this;
    }

    public ScrollBuilder scrollId(String scrollId) {
        checkArgument(!Strings.isNullOrEmpty(scrollId), "scrollId cannot be blank");
        this.scrollId = scrollId;
        return this;
    }

    public Scroll build() {
        checkState(contextRetention != null, "contextRetention is not set");
        checkState(scrollId != null, "scrollId is not set");
        return new Scroll(contextRetention.getSeconds() + "s", scrollId);
    }
}
