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/*
 * Copyright 2021-2022 the original author or authors.
 *
 * 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
 *
 *      https://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.springframework.data.redis.connection.jedis;

import redis.clients.jedis.StreamEntry;
import redis.clients.jedis.StreamEntryID;
import redis.clients.jedis.StreamPendingEntry;
import redis.clients.jedis.util.SafeEncoder;

import java.time.Duration;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import org.springframework.data.domain.Range;
import org.springframework.data.redis.connection.stream.ByteRecord;
import org.springframework.data.redis.connection.stream.Consumer;
import org.springframework.data.redis.connection.stream.PendingMessage;
import org.springframework.data.redis.connection.stream.PendingMessages;
import org.springframework.data.redis.connection.stream.RecordId;
import org.springframework.data.redis.connection.stream.StreamOffset;
import org.springframework.data.redis.connection.stream.StreamRecords;

/**
 * Converters for Redis Stream-specific types.
 * 
 * Converters typically convert between value objects/argument objects retaining the actual types of values (i.e. no
 * serialization/deserialization happens here).
 *
 * @author dengliming
 * @author Mark Paluch
 * @since 2.3
 */
class StreamConverters {

	static byte[][] entryIdsToBytes(List recordIds) {

		byte[][] target = new byte[recordIds.size()][];

		for (int i = 0; i < recordIds.size(); ++i) {
			RecordId id = recordIds.get(i);
			target[i] = JedisConverters.toBytes(id.getValue());
		}

		return target;
	}

	static String getLowerValue(Range range) {
		return getValue(range.getLowerBound(), "-");
	}

	static String getUpperValue(Range range) {
		return getValue(range.getUpperBound(), "+");
	}

	private static String getValue(Range.Bound bound, String fallbackValue) {

		if (bound.equals(Range.Bound.unbounded())) {
			return fallbackValue;
		}

		return bound.getValue().map(it -> bound.isInclusive() ? it : "(" + it).orElse(fallbackValue);
	}

	static List