/*
 * 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.paimon.index;

import org.apache.paimon.types.BigIntType;
import org.apache.paimon.types.DataField;
import org.apache.paimon.types.DataTypes;
import org.apache.paimon.types.IntType;
import org.apache.paimon.types.RowType;
import org.apache.paimon.utils.Range;

import javax.annotation.Nullable;

import java.util.Arrays;

/** Schema for global index. */
public class GlobalIndexMeta {

    public static final RowType SCHEMA =
            new RowType(
                    true,
                    Arrays.asList(
                            new DataField(0, "_ROW_RANGE_START", new BigIntType(false)),
                            new DataField(1, "_ROW_RANGE_END", new BigIntType(false)),
                            new DataField(2, "_INDEX_FIELD_ID", new IntType(false)),
                            new DataField(
                                    3, "_EXTRA_FIELD_IDS", DataTypes.ARRAY(new IntType(false))),
                            new DataField(4, "_INDEX_META", DataTypes.BYTES())));

    private final long rowRangeStart;
    private final long rowRangeEnd;
    private final int indexFieldId;
    @Nullable private final int[] extraFieldIds;
    @Nullable private final byte[] indexMeta;

    public GlobalIndexMeta(
            long rowRangeStart,
            long rowRangeEnd,
            int indexFieldId,
            @Nullable int[] extraFieldIds,
            @Nullable byte[] indexMeta) {
        this.rowRangeStart = rowRangeStart;
        this.rowRangeEnd = rowRangeEnd;
        this.indexFieldId = indexFieldId;
        this.extraFieldIds = extraFieldIds;
        this.indexMeta = indexMeta;
    }

    public long rowRangeStart() {
        return rowRangeStart;
    }

    public long rowRangeEnd() {
        return rowRangeEnd;
    }

    public Range rowRange() {
        return new Range(rowRangeStart, rowRangeEnd);
    }

    public int indexFieldId() {
        return indexFieldId;
    }

    @Nullable
    public int[] extraFieldIds() {
        return extraFieldIds;
    }

    @Nullable
    public byte[] indexMeta() {
        return indexMeta;
    }
}
