using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;

public class ButtonSet : MonoBehaviour
{
    public const float buttonHoldInterval = 0.25f;

    public static Action OnLeft, OnRight, OnUp, OnDown;
    public static bool DownPressed;
    public static bool LeftPressed;
    public static bool RightPressed;
    public static bool UpPressed;
    public EventTrigger btnUp,btnLeft,btnRight,btnDown;

    
    #region Input Handle
    void Start(){
        btnLeft.AddListener(EventTriggerType.PointerDown, OnLeftDown);
        btnLeft.AddListener(EventTriggerType.PointerUp, OnLeftUp);

        btnRight.AddListener(EventTriggerType.PointerDown, OnRightDown);
        btnRight.AddListener(EventTriggerType.PointerUp, OnRightUp);

        btnDown.AddListener(EventTriggerType.PointerDown, OnDownDown);
        btnDown.AddListener(EventTriggerType.PointerUp, OnDownUp);

        btnUp.AddListener(EventTriggerType.PointerDown, OnUpDown);
        btnUp.AddListener(EventTriggerType.PointerUp, OnUpUp);

    }

    void OnLeftDown(BaseEventData e){
        LeftPressed=true;
        leftTimer=buttonHoldInterval;
        OnLeft?.Invoke();
    }

    void OnLeftUp(BaseEventData e){
        LeftPressed=false;
    }

    void OnRightDown(BaseEventData e){
        RightPressed=true;
        rightTimer=buttonHoldInterval;
        OnRight?.Invoke();
    }

    void OnRightUp(BaseEventData e){
        RightPressed=false;
    }

    void OnDownDown(BaseEventData e){
        DownPressed=true;
        downTimer = buttonHoldInterval;
        OnDown?.Invoke();
    }

    void OnDownUp(BaseEventData e){
        DownPressed=false;
    }

    void OnUpUp(BaseEventData e){
        UpPressed = false;
    }


    void OnUpDown(BaseEventData e){
        UpPressed = true;
        upTimer = buttonHoldInterval;
        OnUp?.Invoke();
    }
    #endregion

    float leftTimer,rightTimer, upTimer,downTimer=0;
    void Update()
    {
        if(LeftPressed){
            if(leftTimer > 0){
                leftTimer-=Time.deltaTime;
            }else{
                leftTimer=buttonHoldInterval;
                OnLeft?.Invoke();
            }
        }else{
            leftTimer=0;
        }

        if(RightPressed){
            if(rightTimer > 0){
                rightTimer-=Time.deltaTime;
            }else{
                rightTimer=buttonHoldInterval;
                OnRight?.Invoke();
            }
        }else{
            rightTimer=0;
        }

        if(UpPressed){
            if(upTimer > 0){
                upTimer -= Time.deltaTime;
            }else{
                upTimer = buttonHoldInterval;
                OnUp?.Invoke();
            }
        }

        if(DownPressed){
            if(downTimer > 0){
                downTimer -= Time.deltaTime;
            }else{
                downTimer = buttonHoldInterval;
                OnDown?.Invoke();
            }
        }

    }

}