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/*
 * Copyright © 2017 camunda services GmbH ([email protected])
 *
 * 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 io.zeebe.test.util.collection;

import java.util.HashMap;
import java.util.Map;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
import java.util.function.Function;

public class MapFactoryBuilder
{
    protected T returnValue;
    protected Consumer>> factoryCallback;

    protected BiConsumer> manipulationChain = (a, m) ->
    { };

    public MapFactoryBuilder(T returnValue, Consumer>> factoryCallback)
    {
        this.returnValue = returnValue;
        this.factoryCallback = factoryCallback;
    }

    public MapFactoryBuilder allOf(Function> otherMap)
    {
        manipulationChain = manipulationChain.andThen((a, m) -> m.putAll(otherMap.apply(a)));
        return this;
    }

    public MapFactoryBuilder put(String key, Object value)
    {
        manipulationChain = manipulationChain.andThen((a, m) -> m.put(key, value));
        return this;
    }

    public MapFactoryBuilder put(String key, Function valueFunction)
    {
        manipulationChain = manipulationChain.andThen((a, m) -> m.put(key, valueFunction.apply(a)));
        return this;
    }

    public T done()
    {
        factoryCallback.accept((a) ->
        {
            final Map map = new HashMap<>();
            manipulationChain.accept(a, map);
            return map;
        });
        return returnValue;
    }

}