/*
 * Copyright 2016-present Open Networking Laboratory
 *
 * 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.onosproject.store.primitives.impl;

import org.onosproject.store.primitives.TransactionId;
import org.onosproject.store.service.AsyncConsistentTreeMap;
import org.onosproject.store.service.MapEventListener;
import org.onosproject.store.service.MapTransaction;
import org.onosproject.store.service.Versioned;

import java.util.Collection;
import java.util.Map;
import java.util.NavigableMap;
import java.util.NavigableSet;
import java.util.Objects;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Executor;
import java.util.function.BiFunction;
import java.util.function.Predicate;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * A {@link AsyncConsistentTreeMap} that delegates control to another instance
 * of {@link AsyncConsistentTreeMap}.
 */
public class DelegatingAsyncConsistentTreeMap<V>
        implements AsyncConsistentTreeMap<V> {

    private final AsyncConsistentTreeMap<V> delegateMap;

    DelegatingAsyncConsistentTreeMap(AsyncConsistentTreeMap<V> delegateMap) {
        this.delegateMap = checkNotNull(delegateMap,
                                        "delegate map cannot be null");
    }

    @Override
    public CompletableFuture<String> firstKey() {
        return delegateMap.firstKey();
    }

    @Override
    public CompletableFuture<String> lastKey() {
        return delegateMap.lastKey();
    }

    @Override
    public CompletableFuture<Map.Entry<String, Versioned<V>>> ceilingEntry(String key) {
        return delegateMap.ceilingEntry(key);
    }

    @Override
    public CompletableFuture<Map.Entry<String, Versioned<V>>> floorEntry(String key) {
        return delegateMap.floorEntry(key);
    }

    @Override
    public CompletableFuture<Map.Entry<String, Versioned<V>>> higherEntry(String key) {
        return delegateMap.higherEntry(key);
    }

    @Override
    public CompletableFuture<Map.Entry<String, Versioned<V>>> lowerEntry(String key) {
        return delegateMap.lowerEntry(key);
    }

    @Override
    public CompletableFuture<Map.Entry<String, Versioned<V>>> firstEntry() {
        return delegateMap.firstEntry();
    }

    @Override
    public CompletableFuture<Map.Entry<String, Versioned<V>>> lastEntry() {
        return delegateMap.lastEntry();
    }

    @Override
    public CompletableFuture<Map.Entry<String, Versioned<V>>> pollFirstEntry() {
        return delegateMap.pollFirstEntry();
    }

    @Override
    public CompletableFuture<Map.Entry<String, Versioned<V>>> pollLastEntry() {
        return delegateMap.pollLastEntry();
    }

    @Override
    public CompletableFuture<String> lowerKey(String key) {
        return delegateMap.lowerKey(key);
    }

    @Override
    public CompletableFuture<String> floorKey(String key) {
        return delegateMap.floorKey(key);
    }

    @Override
    public CompletableFuture<String> ceilingKey(String key) {
        return delegateMap.ceilingKey(key);
    }

    @Override
    public CompletableFuture<String> higherKey(String key) {
        return delegateMap.higherKey(key);
    }

    @Override
    public CompletableFuture<NavigableSet<String>> navigableKeySet() {
        return delegateMap.navigableKeySet();
    }

    @Override
    public CompletableFuture<NavigableMap<String, V>> subMap(
            String upperKey,
            String lowerKey,
            boolean inclusiveUpper,
            boolean inclusiveLower) {
        return delegateMap.subMap(upperKey, lowerKey,
                                  inclusiveUpper, inclusiveLower);
    }

    @Override
    public String name() {
        return delegateMap.name();
    }

    @Override
    public CompletableFuture<Integer> size() {
        return delegateMap.size();
    }

    @Override
    public CompletableFuture<Boolean> containsKey(String key) {
        return delegateMap.containsKey(key);
    }

    @Override
    public CompletableFuture<Boolean> containsValue(V value) {
        return delegateMap.containsValue(value);
    }

    @Override
    public CompletableFuture<Versioned<V>> get(String key) {
        return delegateMap.get(key);
    }

    @Override
    public CompletableFuture<Versioned<V>> computeIf(
            String key,
            Predicate<? super V> condition,
            BiFunction<? super String, ? super V,
                    ? extends V> remappingFunction) {
        return delegateMap.computeIf(key, condition, remappingFunction);
    }

    @Override
    public CompletableFuture<Versioned<V>> put(String key, V value) {
        return delegateMap.put(key, value);
    }

    @Override
    public CompletableFuture<Versioned<V>> putAndGet(String key, V value) {
        return delegateMap.putAndGet(key, value);
    }

    @Override
    public CompletableFuture<Versioned<V>> remove(String key) {
        return delegateMap.remove(key);
    }

    @Override
    public CompletableFuture<Void> clear() {
        return delegateMap.clear();
    }

    @Override
    public CompletableFuture<Set<String>> keySet() {
        return delegateMap.keySet();
    }

    @Override
    public CompletableFuture<Collection<Versioned<V>>> values() {
        return delegateMap.values();
    }

    @Override
    public CompletableFuture<Set<Map.Entry<String, Versioned<V>>>> entrySet() {
        return delegateMap.entrySet();
    }

    @Override
    public CompletableFuture<Versioned<V>> putIfAbsent(String key, V value) {
        return delegateMap.putIfAbsent(key, value);
    }

    @Override
    public CompletableFuture<Boolean> remove(String key, V value) {
        return delegateMap.remove(key, value);
    }

    @Override
    public CompletableFuture<Boolean> remove(String key, long version) {
        return delegateMap.remove(key, version);
    }

    @Override
    public CompletableFuture<Versioned<V>> replace(String key, V value) {
        return delegateMap.replace(key, value);
    }

    @Override
    public CompletableFuture<Boolean> replace(String key, V oldValue,
                                              V newValue) {
        return delegateMap.replace(key, oldValue, newValue);
    }

    @Override
    public CompletableFuture<Boolean> replace(String key, long oldVersion,
                                              V newValue) {
        return delegateMap.replace(key, oldVersion, newValue);
    }

    @Override
    public CompletableFuture<Void> addListener(
            MapEventListener<String, V> listener, Executor executor) {
        return delegateMap.addListener(listener, executor);
    }

    @Override
    public CompletableFuture<Void> removeListener(
            MapEventListener<String, V> listener) {
        return delegateMap.removeListener(listener);
    }

    @Override
    public CompletableFuture<Boolean> prepare(
            MapTransaction<String, V> transaction) {
        return delegateMap.prepare(transaction);
    }

    @Override
    public CompletableFuture<Void> commit(TransactionId transactionId) {
        return delegateMap.commit(transactionId);
    }

    @Override
    public CompletableFuture<Void> rollback(TransactionId transactionId) {
        return delegateMap.rollback(transactionId);
    }

    @Override
    public CompletableFuture<Boolean> prepareAndCommit(
            MapTransaction<String, V> transaction) {
        return delegateMap.prepareAndCommit(transaction);
    }

    @Override
    public boolean equals(Object other) {
        if (other instanceof DelegatingAsyncConsistentTreeMap) {
            DelegatingAsyncConsistentTreeMap<V> that =
                    (DelegatingAsyncConsistentTreeMap) other;
            return this.delegateMap.equals(that.delegateMap);
        }
        return false;
    }

    @Override
    public int hashCode() {
        return Objects.hash(delegateMap);
    }

}