using UnityEngine;
using TMPro;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class RotateTicker : MonoBehaviour
{
    //Initialise
    public float spinSpeed = 0.5f;
    private bool spinStop = false;
    private float spinStopMaxTime = 0.25f;
    public float spinStopTime = 0f;
    public float tickZoneAngle = 0f;
    public float tickZoneSpread = 45f;
    public float tickZoneSpreadDecay = 7f;
    public float tickerAngle;
    public int score = 0;
    public GameObject tickZoneParent;
    public GameObject tickZoneImage;
    public GameObject scoreKeeper;
    public TextMeshPro textMeshScore;
    private Image tickZoneFill;
    private float lastTick;
    public float lastMoveDir = 1;

    //Move tickzone function
    void moveTickZone()
    {
        //Reposition the tickZone
        //Clockwise
        if (lastMoveDir == 1)
        {
            tickZoneParent.transform.Rotate(0,0, transform.eulerAngles.z + Random.Range(60, 180));
        }
        //Counter clockwise
        else
        {
            tickZoneParent.transform.Rotate(0,0, transform.eulerAngles.z - Random.Range(60, 180));
        }

    }

    void spinSpeedZero()
    {
        spinSpeed = 0;
    }

    void missZone()
    {
        moveTickZone();
        spinStop = true;
        lastTick = transform.eulerAngles.z;
        spinStopTime = spinStopMaxTime;
        tickZoneSpread -= tickZoneSpreadDecay;
    }

    // Start is called before the first frame update
    void Start()
    {
        moveTickZone();
        //Get components:
        textMeshScore = scoreKeeper.GetComponent<TextMeshPro>();
        tickZoneFill = tickZoneImage.GetComponent<Image>();
    }

    // Update is called once per frame
    void Update()
    {
        //Keep z rotations in range
        tickZoneAngle = tickZoneParent.transform.eulerAngles.z;
        tickerAngle = transform.eulerAngles.z - 360;

        //Get spin direction
        if (spinSpeed != 0)
        {
            lastMoveDir = Mathf.Sign(spinSpeed);
        }

        //Spin ticker
        if (!spinStop)
        {
            transform.Rotate(Vector3.forward * -spinSpeed);
        }

        //Check if went past tickzone:
        //Clockwise
        if (Mathf.Sign(spinSpeed) == 1)
        {
            if (tickerAngle >= tickZoneAngle - tickZoneSpread && tickerAngle < tickZoneAngle - tickZoneSpread + spinSpeed || tickerAngle + 360 >= tickZoneAngle - tickZoneSpread && tickerAngle + 360 < tickZoneAngle - tickZoneSpread + spinSpeed)
            {
                missZone();
            }
        }
        //Counter clockwise
        if (Mathf.Sign(spinSpeed) == -1)
        {
            if (tickerAngle >= tickZoneAngle + spinSpeed && tickerAngle < tickZoneAngle || tickerAngle + 360 >= tickZoneAngle + spinSpeed && tickerAngle + 360 < tickZoneAngle)
            {
                missZone();
            }
        }

        //Pause ticker when pressing spacebar
        var spacebar = Input.GetKeyDown(KeyCode.Space);
        if (spacebar) {

            spinStop = true;
            lastTick = transform.eulerAngles.z;
            spinStopTime = spinStopMaxTime;

            //Check if ticker is in tick zone (or statement for when tick zone is before (360-405) but ticker is after 0 (0 - 45))
            //Yes
            if ((tickerAngle < tickZoneParent.transform.eulerAngles.z && tickerAngle > (tickZoneParent.transform.eulerAngles.z - tickZoneSpread)) || (tickerAngle + 360 < tickZoneParent.transform.eulerAngles.z && tickerAngle + 360 > (tickZoneParent.transform.eulerAngles.z - tickZoneSpread)))
            {
                score++;
                textMeshScore.SetText(score.ToString());
            }
            //No
            else
            {
                tickZoneSpread -= tickZoneSpreadDecay;
            }

            //Debug.Log("Ticker Angle: " + transform.eulerAngles.z);
            moveTickZone();
        }

        //Restart
        var rKey = Input.GetKeyDown(KeyCode.R);
        if (rKey)
        {
            SceneManager.LoadScene(SceneManager.GetActiveScene().name);
        }

        //Timer
        spinStopTime -= Time.deltaTime;

        //Clamp spinStopTime so it doesn't fall into negative values
        if (spinStopTime <= 0) { spinStopTime = 0; }

        //Update tickZone graphic
        tickZoneFill.fillAmount = tickZoneSpread/360;

        //Spin in opposite direction
        if (spinStopTime <= 0 && spinStop) {
            spinSpeed = (spinSpeed + (Mathf.Sign(spinSpeed) * 0.05f)) * -1;
            spinStop = false;
        }

        //Missed all zones
        if (tickZoneSpread <= 0)
        {
            spinSpeedZero();
        }
    }
}