using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;

public class Spinner : MonoBehaviour
{

    public static int LandedNumber{get; private set;}
    public static UnityEvent<int> OnSpinStopped = new UnityEvent<int>();
    public Transform wheel;
    public Vector3 rotationAxis;
    public float CurrentRotation { get{ return (wheel.rotation * rotationAxis).magnitude;}}
    [Tooltip("Initial Spin force")]
    public float SpinForce = 10;
    [Tooltip("How smooth the speed goes up")]
    public float SpinSmoothness = 1f;
    [Tooltip("How smooth the speed goes down")]
    public float Friction = 0.005f;
    [Tooltip("When should the wheel stop")]
    public float StopSpeed =0.01f;
    public int offset = -4;
    public int CurNumber;
    public float CurrentSpeed {get; private set;}
    
    void Start()
    {
        Debug.Log(RouletteNumbers.Length);
    }
    bool pushing = false;
    // Update is called once per frame
    void Update()
    {
        HandleFriction();
        wheel.Rotate(rotationAxis * CurrentSpeed);
        CurNumber = GetLandedNumber();
    }

    void HandleFriction(){
        if(pushing){return;}
        if(CurrentSpeed > 0){
            if(CurrentSpeed < StopSpeed){
                CurrentSpeed=0;
                m_onSpinStopped();
            }else{
                CurrentSpeed -= Friction;
            }
        }
    }
    public void Spin(){
        StartCoroutine(spin());
    }

    IEnumerator spin(){
        pushing=true;
        while(CurrentSpeed < SpinForce){
            CurrentSpeed += SpinSmoothness;
            yield return new WaitForFixedUpdate();
        }
        pushing = false;
    }

    public int[] RouletteNumbers = {0,32,15,19,4,21,2,25,17,34,6,27,13,36,11,30,8,23,10,5,24,16,33,1,20,14,31,9,22,18,29,7,28,12,35,3,26};

    private void m_onSpinStopped(){
        
        LandedNumber = GetLandedNumber();
        Debug.Log($"Landed on {LandedNumber}");


        OnSpinStopped.Invoke(LandedNumber);
    }

    int GetLandedNumber(){
        float fraction = ((wheel.eulerAngles.z) / 360f) *  (float)RouletteNumbers.Length;
        int index= Mathf.RoundToInt(fraction) + offset;
        if(index < 0){
            index = RouletteNumbers.Length + index - 1;
        }else if(index >= RouletteNumbers.Length){
            index = index - RouletteNumbers.Length;
        }
        int m_LandedNumber = RouletteNumbers[index];

        return m_LandedNumber;
    }
}