using UnityEngine;
using UnityEngine.EventSystems;

public class UIHover : MonoBehaviour, IPointerDownHandler, IPointerUpHandler
{
    [SerializeField] private InputType inputType;

    [SerializeField] private float maxLerpTimer = 1f;

    [SerializeField] private float minInputVal;
    [SerializeField] private float maxInputVal;

    private InputManager inputManager;

    private float lerpTimer = 0f;
    private bool canDetectInput = false;
    private float currInputVal, targetInputVal;

    public void OnPointerDown(PointerEventData eventData)
    {
        inputManager = inputManager ?? InterfaceManager.Instance?.GetInterfaceInstance<InputManager>();

        currInputVal = minInputVal;
        targetInputVal = maxInputVal;
        canDetectInput = true;
        lerpTimer = 0f;
        Debug.Log($"OnPointerEnter");
    }

    public void OnPointerUp(PointerEventData eventData)
    {
        lerpTimer = 0;
        targetInputVal = minInputVal;
        canDetectInput = true;
        Debug.Log($"OnPointerExit");

        // if (lerpTimer < maxLerpTimer)
        // {
        //     lerpTimer = 0;
        //     canDetectInput = false;
        //     inputManager.OnInputProvided(inputType, targetInputVal);
        // }
        // else
        // {
        // lerpTimer = 0;
        // }
    }

    private void Update()
    {
        if (!canDetectInput) return;

        if (lerpTimer >= maxLerpTimer)
        {
            lerpTimer = 0;
            canDetectInput = false;
            return;
        }

        lerpTimer += Time.deltaTime;
        currInputVal = Mathf.Lerp(currInputVal, targetInputVal, lerpTimer);
        inputManager.OnInputProvided(inputType, currInputVal);
    }
}