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package org.onetwo.common.profiling;

import java.util.ArrayList;
import java.util.List;


public class ProfilingTimerBean implements java.io.Serializable {
	
	private static final long serialVersionUID = -6180672043920208784L;
	
	List children = new ArrayList();
    ProfilingTimerBean parent = null;

    String resource;

    long startTime;
    long totalTime;
    boolean nanoTime;

    public ProfilingTimerBean(String resource, boolean nanoTime)
    {
        this.resource = resource;
        this.nanoTime = nanoTime;
    }

    protected void addParent(ProfilingTimerBean parent)
    {
        this.parent = parent;
    }

    public ProfilingTimerBean getParent()
    {
        return parent;
    }


    public void addChild(ProfilingTimerBean child)
    {
        children.add(child);
        child.addParent(this);
    }


    public void setStartTime()
    {
    	if(nanoTime){
    		this.startTime = System.nanoTime();
    	}else{
    		this.startTime = System.currentTimeMillis();
    	}
    }

    public void setEndTime()
    {
    	if(nanoTime){
    		this.totalTime = System.nanoTime() - startTime;
    	}else{
    		this.totalTime = System.currentTimeMillis() - startTime;
    	}
    }

    public String getResource()
    {
        return resource;
    }

    /**
     * Get a formatted string representing all the methods that took longer than a specified time.
     */

    public String getPrintable(long minTime)
    {
        return getPrintable("", minTime);
    }

    protected String getPrintable(String indent, long minTime)
    {
        //only print the value if we are larger or equal to the min time.
        if (totalTime >= minTime)
        {
            StringBuilder buffer = new StringBuilder();
            buffer.append(indent);
            if(nanoTime){
            	buffer.append("[" + totalTime + " nanoseconds] - " + resource);
            }else{
            	buffer.append("[" + totalTime + " ms] - " + resource);
            }
            buffer.append("\n");

            for (ProfilingTimerBean aChildren : children) {
                buffer.append((aChildren).getPrintable(indent + "  ", minTime));
            }

            return buffer.toString();
        }
        else
            return "";
    }
}