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

public class AudioSliderDragHandler : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
{

    public RectTransform sliderBackground; // Assign in Inspector
    public float minValue = 0f;
    public float maxValue = 1f;
    public float slideareaOffsetMultiplier = 0.9f;
    public float CurrentValue { get; private set; }

    private RectTransform handleRect;
    private Vector2 backgroundStart;
    private float backgroundWidth;

    void Awake()
    {
        handleRect = GetComponent<RectTransform>();

        if (sliderBackground != null)
        {
            backgroundStart = sliderBackground.position;
            backgroundWidth = sliderBackground.rect.width;
        }

    }

    public void OnBeginDrag(PointerEventData eventData)
    {
        UpdateSlider(eventData);
    }

    public void OnDrag(PointerEventData eventData)
    {
        UpdateSlider(eventData);
    }

    public void OnEndDrag(PointerEventData eventData)
    {
        UpdateSlider(eventData);
        //notify FMOD
    }
    private void UpdateSlider(PointerEventData eventData)
    {
        Debug.Log("UpDating Slider");
        Vector2 localPoint;
        RectTransformUtility.ScreenPointToLocalPointInRectangle(sliderBackground, eventData.position, eventData.pressEventCamera, out localPoint);

        float halfWidth = sliderBackground.rect.width * 0.5f;



        // Only allow dragging within 90% of the slider width, centered
        float limit = halfWidth * slideareaOffsetMultiplier;
        float clampedX = Mathf.Clamp(localPoint.x, -limit, limit);

        Vector3 newPosition = new Vector3(clampedX, handleRect.localPosition.y, handleRect.localPosition.z);
        handleRect.localPosition = newPosition;

        // Normalize within the limited 90% range
        float normalized = (clampedX + limit) / (limit * 2f);
        //Debug.Log(normalized);
        CurrentValue = Mathf.Lerp(minValue, maxValue, normalized);

        //Debug.Log(warningThreshholdValue);


    }

}