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/**
 * Copyright (c) 2013-2024 Nikita Koksharov
 *
 * Licensed 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.redisson.spring.data.connection;

import org.redisson.client.handler.State;
import org.redisson.client.protocol.decoder.MultiDecoder;
import org.springframework.data.geo.*;
import org.springframework.data.redis.connection.RedisGeoCommands.GeoLocation;

import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;

/**
 * 
 * @author Nikita Koksharov
 *
 */
public class ByteBufferGeoResultsDecoder implements MultiDecoder>> {

    private final Metric metric;
    
    public ByteBufferGeoResultsDecoder() {
        this(null);
    }
    
    public ByteBufferGeoResultsDecoder(Metric metric) {
        super();
        this.metric = metric;
    }

    @Override
    public GeoResults> decode(List parts, State state) {
        List>> result = new ArrayList>>();
        for (Object object : parts) {
            if (object instanceof List) {
                List vals = ((List) object);
                
                if (metric != null) {
                    GeoLocation location = new GeoLocation(ByteBuffer.wrap((byte[])vals.get(0)), null);
                    result.add(new GeoResult>(location, new Distance((Double)vals.get(1), metric)));
                } else {
                    GeoLocation location = new GeoLocation(ByteBuffer.wrap((byte[])vals.get(0)), (Point)vals.get(1));
                    result.add(new GeoResult>(location, null));
                }
            } else {
                GeoLocation location = new GeoLocation(ByteBuffer.wrap((byte[])object), null);
                result.add(new GeoResult>(location, new Distance(0)));
            }
        }
        return new GeoResults>(result);
    }

}