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/**
 * Copyright 2016 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;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.redisson.api.RBucket;
import org.redisson.api.RBuckets;
import org.redisson.api.RFuture;
import org.redisson.client.codec.Codec;
import org.redisson.client.codec.DelegateDecoderCodec;
import org.redisson.client.protocol.RedisCommand;
import org.redisson.client.protocol.RedisCommand.ValueType;
import org.redisson.client.protocol.RedisCommands;
import org.redisson.command.CommandExecutor;
import org.redisson.connection.decoder.MapGetAllDecoder;

public class RedissonBuckets implements RBuckets {

    private final Codec codec;
    private final CommandExecutor commandExecutor;
    private final Redisson redisson;
    
    public RedissonBuckets(Redisson redisson, CommandExecutor commandExecutor) {
        this(redisson, commandExecutor.getConnectionManager().getCodec(), commandExecutor);
    }
    
    public RedissonBuckets(Redisson redisson, Codec codec, CommandExecutor commandExecutor) {
        super();
        this.codec = codec;
        this.commandExecutor = commandExecutor;
        this.redisson = redisson;
    }

    @Override
    public  List> find(String pattern) {
        Collection keys = commandExecutor.get(commandExecutor., String>readAllAsync(RedisCommands.KEYS, pattern));
        List> buckets = new ArrayList>(keys.size());
        for (String key : keys) {
            if(key == null) {
                continue;
            }
            buckets.add(redisson.getBucket(key, codec));
        }
        return buckets;
    }

    @Override
    public  Map get(String... keys) {
        if (keys.length == 0) {
            return Collections.emptyMap();
        }

        RedisCommand> command = new RedisCommand>("MGET", new MapGetAllDecoder(Arrays.