/*
 * Copyright 2017 Graz University of Technology EAAF-Core Components has been developed in a
 * cooperation between EGIZ, A-SIT Plus, A-SIT, and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.2 or - as soon they will be approved by the European
 * Commission - subsequent versions of the EUPL (the "Licence"); You may not use this work except in
 * compliance with the Licence. You may obtain a copy of the Licence at:
 * https://joinup.ec.europa.eu/news/understanding-eupl-v12
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the Licence
 * is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the Licence for the specific language governing permissions and limitations under
 * the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text file for details on the
 * various modules and licenses. The "NOTICE" text file is part of the distribution. Any derivative
 * works that you distribute must include a readable copy of the "NOTICE" text file.
 */

package at.gv.egiz.eaaf.core.impl.idp.process.model;

import java.io.Serializable;

import org.apache.commons.collections4.CollectionUtils;

import at.gv.egiz.eaaf.core.api.idp.process.Task;

/**
 * Represents information about a single task to be performed upon process
 * execution.
 *
 * @author tknall
 *
 */
public class TaskInfo extends ProcessNode implements Serializable {

  private static final long serialVersionUID = 1L;
  private static final boolean DEFAULT_ASYNC = false;

  private String taskImplementingClass;
  private boolean async = DEFAULT_ASYNC;

  /**
   * Determines if the task is marked asynchronous ({@code true}) or synchronous
   * ({@code false}).
   *
   * @return A flag indicating if the task should be executed asynchronously or
   *         synchronously. (Default: {@code false})
   */
  public boolean isAsync() {
    return async;
  }

  /**
   * Marks a task to executed asynchronously ({@code true}) or synchronously
   * ({@code false}).
   *
   * @param async The flag.
   */
  public void setAsync(final boolean async) {
    this.async = async;
  }

  /**
   * Returns the class that implements the actual task (must implement
   * {@link Task}).
   *
   * @return The task implementing class.
   */
  public String getTaskImplementingClass() {
    return taskImplementingClass;
  }

  /**
   * Sets the class that implements the actual task (must implement {@link Task}).
   *
   * @param taskImplementingClass The task implementing class.
   */
  public void setTaskImplementingClass(final String taskImplementingClass) {
    this.taskImplementingClass = taskImplementingClass;
  }

  @Override
  public String toString() {
    final StringBuilder builder = new StringBuilder();
    if (getId() != null) {
      builder.append("id=");
      builder.append(getId());
    }
    if (async != DEFAULT_ASYNC) {
      if (builder.length() > 0) {
        builder.append(", ");
      }
      builder.append("async=");
      builder.append(async);
    }
    if (taskImplementingClass != null) {
      if (builder.length() > 0) {
        builder.append(", ");
      }
      builder.append("taskImplementingClass=");
      builder.append(taskImplementingClass);
    }
    if (CollectionUtils.isNotEmpty(getIncomingTransitions())) {
      if (builder.length() > 0) {
        builder.append(", ");
      }
      builder.append("incomingTransitions=");
      builder.append(getIncomingTransitions());
    }
    if (CollectionUtils.isNotEmpty(getOutgoingTransitions())) {
      if (builder.length() > 0) {
        builder.append(", ");
      }
      builder.append("outgoingTransitions=");
      builder.append(getOutgoingTransitions());
    }
    builder.insert(0, "TaskInfo [");
    builder.append("]");
    return builder.toString();
  }

}