using UnityEngine;
using System.Collections;

public class FrameUpdateTimeLogger {

	private FileWriter fileWriter;

	private const int _preambleFrameToSkip = 10; // skip the first few frames;

	private int _currLinesWritten;
	private int _totalLinesToWrite;

	public FrameUpdateTimeLogger(string filepath, int secToLog, int fps) {
		fileWriter = new FileWriter ();
		fileWriter.Init (filepath);

		this._totalLinesToWrite = secToLog * fps;
	}

	public void LogCurrentTimeMicro() {
		_currLinesWritten++;
		// don't write the few n frames since frame might be dropped during init
		if (_currLinesWritten <= _preambleFrameToSkip)
			return;
		
		if (_currLinesWritten > _totalLinesToWrite + _preambleFrameToSkip) {
			fileWriter.Close ();
		} else {
			try {
				fileWriter.Write (DateTimeUtil.CurrentTimeMicros + "");
			} catch {
			}
		}
	}

	public void CloseLog() {		
		fileWriter.Close ();
	}
			
}