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/*
 * Copyright (c) 2022 Goldman Sachs and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v. 1.0 which accompany this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 */

package org.eclipse.collections.impl.map.mutable;

import java.io.Serializable;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

import org.eclipse.collections.api.block.function.Function;
import org.eclipse.collections.api.block.procedure.Procedure2;
import org.eclipse.collections.api.factory.Maps;
import org.eclipse.collections.api.map.ImmutableMap;
import org.eclipse.collections.api.map.MutableMap;
import org.eclipse.collections.impl.utility.Iterate;
import org.eclipse.collections.impl.utility.MapIterate;

/**
 * This class provides a MutableMap wrapper around a JDK Collections Map interface instance. All the MutableMap
 * interface methods are supported in addition to the JDK Map interface methods.
 * 
 * To create a new wrapper around an existing Map instance, use the {@link #adapt(Map)} factory method.
 */
public class MapAdapter
        extends AbstractMutableMap
        implements Serializable
{
    private static final long serialVersionUID = 1L;
    protected final Map delegate;

    protected MapAdapter(Map newDelegate)
    {
        if (newDelegate == null)
        {
            throw new NullPointerException("MapAdapter may not wrap null");
        }
        this.delegate = newDelegate;
    }

    public static  MutableMap adapt(Map map)
    {
        return map instanceof MutableMap ? (MutableMap) map : new MapAdapter<>(map);
    }

    @Override
    public String toString()
    {
        return this.delegate.toString();
    }

    @Override
    public MutableMap clone()
    {
        return UnifiedMap.newMap(this.delegate);
    }

    @Override
    public  MutableMap newEmpty(int capacity)
    {
        return UnifiedMap.newMap(capacity);
    }

    @Override
    public int size()
    {
        return this.delegate.size();
    }

    @Override
    public boolean isEmpty()
    {
        return this.delegate.isEmpty();
    }

    @Override
    public Iterator iterator()
    {
        return this.delegate.values().iterator();
    }

    @Override
    public V remove(Object key)
    {
        return this.delegate.remove(key);
    }

    @Override
    public Set keySet()
    {
        return this.delegate.keySet();
    }

    @Override
    public Collection values()
    {
        return this.delegate.values();
    }

    @Override
    public Set> entrySet()
    {
        return this.delegate.entrySet();
    }

    @Override
    public void clear()
    {
        this.delegate.clear();
    }

    @Override
    public MutableMap newEmpty()
    {
        return Maps.mutable.empty();
    }

    @Override
    public void forEachKeyValue(Procedure2 procedure)
    {
        MapIterate.forEachKeyValue(this.delegate, procedure);
    }

    @Override
    public V get(Object key)
    {
        return this.delegate.get(key);
    }

    @Override
    public V put(K key, V value)
    {
        return this.delegate.put(key, value);
    }

    @Override
    public void putAll(Map map)
    {
        this.delegate.putAll(map);
    }

    @Override
    public  MutableMap collectKeysAndValues(
            Iterable iterable,
            Function keyFunction,
            Function valueFunction)
    {
        Iterate.addToMap(iterable, keyFunction, valueFunction, this.delegate);
        return this;
    }

    @Override
    public V removeKey(K key)
    {
        return this.delegate.remove(key);
    }

    @Override
    public boolean containsKey(Object key)
    {
        return this.delegate.containsKey(key);
    }

    @Override
    public boolean containsValue(Object value)
    {
        return this.delegate.containsValue(value);
    }

    @Override
    public boolean equals(Object o)
    {
        return this.delegate.equals(o);
    }

    @Override
    public int hashCode()
    {
        return this.delegate.hashCode();
    }

    @Override
    public ImmutableMap toImmutable()
    {
        return Maps.immutable.ofMap(this);
    }
}