/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 */

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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.
 */

/*
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

package org.opensearch.geo.search.aggregations.bucket.geogrid;

import org.opensearch.common.geo.GeoBoundingBox;
import org.opensearch.common.geo.GeoUtils;
import org.opensearch.core.common.io.stream.StreamInput;
import org.opensearch.core.xcontent.ObjectParser;
import org.opensearch.index.query.QueryShardContext;
import org.opensearch.search.aggregations.AggregationBuilder;
import org.opensearch.search.aggregations.AggregatorFactories;
import org.opensearch.search.aggregations.AggregatorFactory;
import org.opensearch.search.aggregations.support.ValuesSourceAggregatorFactory;
import org.opensearch.search.aggregations.support.ValuesSourceConfig;
import org.opensearch.search.aggregations.support.ValuesSourceRegistry;

import java.io.IOException;
import java.util.Map;

/**
 * Aggregation Builder for geohash_grid
 *
 * @opensearch.api
 */
public class GeoHashGridAggregationBuilder extends GeoGridAggregationBuilder {
    public static final String NAME = "geohash_grid";
    public static final int DEFAULT_PRECISION = 5;
    public static final int DEFAULT_MAX_NUM_CELLS = 10000;
    public static final ValuesSourceRegistry.RegistryKey<GeoGridAggregatorSupplier> REGISTRY_KEY = new ValuesSourceRegistry.RegistryKey<>(
        NAME,
        GeoGridAggregatorSupplier.class
    );

    public static final ObjectParser<GeoHashGridAggregationBuilder, String> PARSER = createParser(
        NAME,
        GeoUtils::parsePrecision,
        GeoHashGridAggregationBuilder::new
    );

    public GeoHashGridAggregationBuilder(String name) {
        super(name);
        precision(DEFAULT_PRECISION);
        size(DEFAULT_MAX_NUM_CELLS);
        shardSize = -1;
    }

    public GeoHashGridAggregationBuilder(StreamInput in) throws IOException {
        super(in);
    }

    public static void registerAggregators(ValuesSourceRegistry.Builder builder) {
        GeoHashGridAggregatorFactory.registerAggregators(builder);
    }

    @Override
    public GeoGridAggregationBuilder precision(int precision) {
        this.precision = GeoUtils.checkPrecisionRange(precision);
        return this;
    }

    @Override
    protected ValuesSourceAggregatorFactory createFactory(
        String name,
        ValuesSourceConfig config,
        int precision,
        int requiredSize,
        int shardSize,
        GeoBoundingBox geoBoundingBox,
        QueryShardContext queryShardContext,
        AggregatorFactory parent,
        AggregatorFactories.Builder subFactoriesBuilder,
        Map<String, Object> metadata
    ) throws IOException {
        return new GeoHashGridAggregatorFactory(
            name,
            config,
            precision,
            requiredSize,
            shardSize,
            geoBoundingBox,
            queryShardContext,
            parent,
            subFactoriesBuilder,
            metadata
        );
    }

    private GeoHashGridAggregationBuilder(
        GeoHashGridAggregationBuilder clone,
        AggregatorFactories.Builder factoriesBuilder,
        Map<String, Object> metadata
    ) {
        super(clone, factoriesBuilder, metadata);
    }

    @Override
    protected AggregationBuilder shallowCopy(AggregatorFactories.Builder factoriesBuilder, Map<String, Object> metadata) {
        return new GeoHashGridAggregationBuilder(this, factoriesBuilder, metadata);
    }

    @Override
    public String getType() {
        return NAME;
    }

    @Override
    protected ValuesSourceRegistry.RegistryKey<?> getRegistryKey() {
        return REGISTRY_KEY;
    }
}
