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/*
 * Copyright 2014-2015 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.way.pojo.plugin;

import java.util.Objects;

/**
 * @author [email protected] (Marcio Endo)
 */
abstract class PojoPlugin {

  private final PojoAction action;

  PojoPlugin(PojoAction action) {
    this.action = action;
  }

  public static PojoPlugin of(PojoAction action) {
    Objects.requireNonNull(action);
    return new Always(action);
  }

  public static PojoPlugin of(PojoAction action, PojoPredicate predicate) {
    Objects.requireNonNull(action);
    Objects.requireNonNull(predicate);
    return new Conditional(action, predicate);
  }

  public ContributionExe execute(PojoInfo pojoInfo) {
    Contribution contribution = action.execute(pojoInfo);
    return new ContributionExe(contribution, action.getClass());
  }

  public abstract boolean test(PojoInfo pojoInfo);

  private static class Always extends PojoPlugin {

    public Always(PojoAction action) {
      super(action);
    }

    @Override
    public boolean test(PojoInfo pojoInfo) {
      return true;
    }

  }

  private static class Conditional extends PojoPlugin {

    private final PojoPredicate predicate;

    public Conditional(PojoAction action, PojoPredicate predicate) {
      super(action);
      this.predicate = predicate;
    }

    @Override
    public boolean test(PojoInfo pojoInfo) {
      return predicate.test(pojoInfo);
    }

  }

}