/*
 * 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.fluss.server.log;

import org.apache.fluss.annotation.Internal;

import java.util.Objects;

/** A class to represent the loaded log offsets. */
@Internal
final class LoadedLogOffsets {
    private final long recoveryPoint;
    private final LogOffsetMetadata nextOffsetMetadata;

    public LoadedLogOffsets(final long recoveryPoint, final LogOffsetMetadata nextOffsetMetadata) {
        this.recoveryPoint = recoveryPoint;
        this.nextOffsetMetadata =
                Objects.requireNonNull(nextOffsetMetadata, "nextOffsetMetadata should not be null");
    }

    public long getRecoveryPoint() {
        return recoveryPoint;
    }

    public LogOffsetMetadata getNextOffsetMetadata() {
        return nextOffsetMetadata;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        final LoadedLogOffsets that = (LoadedLogOffsets) o;
        return recoveryPoint == that.recoveryPoint
                && nextOffsetMetadata.equals(that.nextOffsetMetadata);
    }

    @Override
    public int hashCode() {
        int result = Long.hashCode(recoveryPoint);
        result = 31 * result + nextOffsetMetadata.hashCode();
        return result;
    }

    @Override
    public String toString() {
        return "LoadedLogOffsets("
                + ", recoveryPoint="
                + recoveryPoint
                + ", nextOffsetMetadata="
                + nextOffsetMetadata
                + ')';
    }
}
