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/*
 * Copyright (C) 2005, The Beangle Software.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see .
 */

package org.beangle.commons.lang.time

import scala.collection.mutable

/** Timer Node in stack
  *
  * @author chaostone
  * @since 3.0.0
  */
@SerialVersionUID(-6180672043920208784L)
class TimerNode(val resource: String, var startTime: Long) extends Serializable {

  var children = new mutable.ListBuffer[TimerNode]

  var totalTime: Long = _

  def start(startTime: Long): Unit =
    this.startTime = startTime

  def end(): Long = {
    this.totalTime = System.currentTimeMillis() - startTime
    this.totalTime
  }

  /** Get a formatted string representing all the methods that took longer than a specified time.
    */
  def getPrintable: String = getPrintable("")

  protected def getPrintable(indent: String): String = {
    val buffer = new StringBuilder()
    buffer.append(indent)
    buffer.append("[" + totalTime + "ms] - " + resource)
    for (child <- children)
      buffer.append('\n').append(child.getPrintable(indent + "  "))
    buffer.toString
  }
}