/*
 * Apache 2.0 License
 *
 * Copyright (c) Sebastian Katzer 2017
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apache License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://opensource.org/licenses/Apache-2.0/ and read it before using this
 * file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 */

package de.appplant.cordova.plugin.notification.trigger;

import java.util.Calendar;
import java.util.Date;

abstract public class DateTrigger {

  // Default unit is SECOND
  public enum Unit {
    SECOND, MINUTE, HOUR, DAY, WEEK, MONTH, QUARTER, YEAR
  }

  // Internal counter
  private int occurrence = 1;

  /**
   * Gets the next trigger date.
   *
   * @param base The date from where to calculate the trigger date.
   *
   * @return null if there's none next trigger date.
   */
  abstract public Date getNextTriggerDate(Date base);

  /**
   * The value of the occurrence.
   */
  public int getOccurrence() {
    return occurrence;
  }

  /**
   * Increase the occurrence by 1.
   */
  void incOccurrence() {
    occurrence += 1;
  }

  /**
   * Gets a calendar instance pointing to the specified date.
   *
   * @param date The date to point.
   */
  Calendar getCal(Date date) {
    Calendar cal = Calendar.getInstance();
    cal.setTime(date);

    return cal;
  }

}