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

namespace Ichni.UI
{
    public class ModifyValueButton : MonoBehaviour, IPointerClickHandler, IPointerUpHandler, IPointerDownHandler
    {
        public float holdThreshold = 0.5f;
        
        private bool isPointerDown = false;
        private bool isLongPress = false;
        private float pointerDownTimer = 0f;
        private float longPressTriggerInterval = 0.1f;
        private float longPressTimer = 0f;
        
        public TextButton button;
        public UnityAction tapAction;
        public UnityAction longPressAction;
        
        public void SetUpButton(UnityAction tapAction, UnityAction longPressAction)
        {
            button ??= GetComponent<TextButton>();
            this.tapAction = tapAction;
            this.longPressAction = longPressAction;
        }

        void Update()
        {
            if (isPointerDown)
            {
                pointerDownTimer += Time.deltaTime;
                if (pointerDownTimer >= holdThreshold && !isLongPress)
                {
                    isLongPress = true;
                }
            }
        
            if (isLongPress)
            {
                longPressTimer += Time.deltaTime;
                
                if (longPressTimer >= longPressTriggerInterval)
                {
                    longPressTimer = 0f;
                    longPressAction?.Invoke();
                }
            }
        }
        
        public void OnPointerClick(PointerEventData eventData)
        {
            if (!isLongPress)
            {
                tapAction?.Invoke();
            }
        }

        public void OnPointerDown(PointerEventData eventData)
        {
            isPointerDown = true;
        }

        public void OnPointerUp(PointerEventData eventData)
        {
            isPointerDown = false;
            isLongPress = false;
            pointerDownTimer = 0f;
        }

    }
}