package com.yahoo.labs.samoa.learners;

/*
 * #%L
 * SAMOA
 * %%
 * Copyright (C) 2014 - 2015 Apache Software Foundation
 * %%
 * 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.
 * #L%
 */

/**
 * License
 */

import com.yahoo.labs.samoa.core.ContentEvent;
import com.yahoo.labs.samoa.core.SerializableInstance;
import net.jcip.annotations.Immutable;
import com.yahoo.labs.samoa.instances.Instance;
import java.util.LinkedList;
import java.util.List;

//import weka.core.Instance;

/**
 * The Class InstanceEvent.
 */
@Immutable
final public class InstancesContentEvent implements ContentEvent {

  /**
	 * 
	 */
  private static final long serialVersionUID = -8620668863064613845L;
  private long instanceIndex;
  private int classifierIndex;
  private int evaluationIndex;
  // private SerializableInstance instance;
  private boolean isTraining;
  private boolean isTesting;
  private boolean isLast = false;

  public InstancesContentEvent() {

  }

  /**
   * Instantiates a new instance event.
   * 
   * @param index
   *          the index
   * @param instance
   *          the instance
   * @param isTraining
   *          the is training
   */
  public InstancesContentEvent(long index,// Instance instance,
      boolean isTraining, boolean isTesting) {
    /*
     * if (instance != null) { this.instance = new
     * SerializableInstance(instance); }
     */
    this.instanceIndex = index;
    this.isTraining = isTraining;
    this.isTesting = isTesting;
  }

  public InstancesContentEvent(InstanceContentEvent event) {
    this.instanceIndex = event.getInstanceIndex();
    this.isTraining = event.isTraining();
    this.isTesting = event.isTesting();
  }

  protected List<Instance> instanceList = new LinkedList<Instance>();

  public void add(Instance instance) {
    instanceList.add(new SerializableInstance(instance));
  }

  /**
   * Gets the single instance of InstanceEvent.
   * 
   * @return the instance.
   */
  public Instance[] getInstances() {
    return instanceList.toArray(new Instance[instanceList.size()]);
  }

  /**
   * Gets the instance index.
   * 
   * @return the index of the data vector.
   */
  public long getInstanceIndex() {
    return instanceIndex;
  }

  /**
   * Checks if is training.
   * 
   * @return true if this is training data.
   */
  public boolean isTraining() {
    return isTraining;
  }

  /**
   * Checks if is testing.
   * 
   * @return true if this is testing data.
   */
  public boolean isTesting() {
    return isTesting;
  }

  /**
   * Gets the classifier index.
   * 
   * @return the classifier index
   */
  public int getClassifierIndex() {
    return classifierIndex;
  }

  /**
   * Sets the classifier index.
   * 
   * @param classifierIndex
   *          the new classifier index
   */
  public void setClassifierIndex(int classifierIndex) {
    this.classifierIndex = classifierIndex;
  }

  /**
   * Gets the evaluation index.
   * 
   * @return the evaluation index
   */
  public int getEvaluationIndex() {
    return evaluationIndex;
  }

  /**
   * Sets the evaluation index.
   * 
   * @param evaluationIndex
   *          the new evaluation index
   */
  public void setEvaluationIndex(int evaluationIndex) {
    this.evaluationIndex = evaluationIndex;
  }

  /*
   * (non-Javadoc)
   * 
   * @see samoa.core.ContentEvent#getKey(int)
   */
  public String getKey(int key) {
    if (key == 0)
      return Long.toString(this.getEvaluationIndex());
    else
      return Long.toString(10000
          * this.getEvaluationIndex()
          + this.getClassifierIndex());
  }

  @Override
  public String getKey() {
    // System.out.println("InstanceContentEvent "+Long.toString(this.instanceIndex));
    return Long.toString(this.getClassifierIndex());
  }

  @Override
  public void setKey(String str) {
    this.instanceIndex = Long.parseLong(str);
  }

  @Override
  public boolean isLastEvent() {
    return isLast;
  }

  public void setLast(boolean isLast) {
    this.isLast = isLast;
  }

}