using System;
using System.Collections.Generic;

public enum TimerDirection
{
    TimerIncrement,
    TimerDecrement
}

public class TimerHelper
{
    private float _timerInterval;
    private float _timerMax;
    private float _timerTick;

    private int _timesRun;

    private bool _timerRepeats;

    private bool _hasBeedStarted = false;

    private TimerDirection _timerDirection;

    public TimerHelper(float timeMax, bool repeating = true, TimerDirection direction = TimerDirection.TimerIncrement)
    {
        _timerMax = timeMax;
        _timerRepeats = repeating;
        _timerDirection = direction;

        if (_timerDirection == TimerDirection.TimerDecrement)
        {
            _timerInterval = 0.0f;
            _timerTick = -_timerMax;
        }
        else
        {
            _timerInterval = _timerMax;
            _timerTick = 0.0f;
        }
    }

    public float CurrentTick
    {
        get
        {
            return Math.Abs(_timerTick);
        }
    }

    public int TimesRun
    {
        get
        {
            return _timesRun;
        }
    }

    public float Position
    {
        get
        {
            return Math.Abs(_timerTick) / _timerMax;
        }
    }

    public bool Started
    {
        get
        {
            return _hasBeedStarted;
        }
    }

    public bool HasTicked(float currentTimestamp)
    {
        _hasBeedStarted = true;
        if (_timerTick >= _timerInterval)
        {
            _timesRun++;
            if (_timerRepeats)
            {
                RestartTimer();
            }
            return true;
        }
        else
        {
            _timerTick += currentTimestamp;
            return false;
        }
    }

    public void RestartTimer()
    {
        if (_timerDirection == TimerDirection.TimerDecrement)
        {
            _timerTick = -_timerMax;
        }
        else
        {
            _timerTick = 0.0f;
        }
        _hasBeedStarted = false;
    }

}