using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
using System;
[RequireComponent(typeof(EventTrigger))]
public class ButtonV2 : MonoBehaviour
{
    EventTrigger trigger;
    public Image image;
    public Text text;
    [SerializeField]
    public BasicUIEffect imageFx;
    [SerializeField]
    public BasicUIEffect textFx;

    public float fxSpeed = 0.1f;
    public AudioClip hoverSfx;
    public AudioClip selectSfx;

    void Start()
    {
        trigger = GetComponent<EventTrigger>();

        EventTrigger.Entry entry1 = new EventTrigger.Entry();
        entry1.eventID = EventTriggerType.PointerEnter;
        entry1.callback.AddListener(OnMouseEnter);

        EventTrigger.Entry entry2 = new EventTrigger.Entry();
        entry2.eventID = EventTriggerType.PointerExit;
        entry2.callback.AddListener(OnMouseExit);

        EventTrigger.Entry entry3 = new EventTrigger.Entry();
        entry3.eventID = EventTriggerType.PointerDown;
        entry3.callback.AddListener((BaseEventData e)=>{AudioSource.PlayClipAtPoint(selectSfx, Vector3.zero); OnMouseExit(e);});
       
        EventTrigger.Entry entry4 = new EventTrigger.Entry();
        entry4.eventID = EventTriggerType.PointerUp;
        entry4.callback.AddListener(OnMouseEnter);

        trigger.triggers.Add(entry1);
        trigger.triggers.Add(entry2);
        trigger.triggers.Add(entry3);
        trigger.triggers.Add(entry4);

        if(image!=null)defSizeImg = image.rectTransform.sizeDelta;
        
        if(text!=null)defTextImg = text.rectTransform.sizeDelta;
    }
    Vector2 defSizeImg;
    Vector2 defTextImg;
    // Update is called once per frame
    void Update()
    {
        if (active)
        {
            if (image != null)
            {
                image.color = Color.Lerp(image.color, imageFx.activeColor, fxSpeed);
                image.rectTransform.sizeDelta = Vector2.Lerp(image.rectTransform.sizeDelta, defTextImg * imageFx.activeSize, fxSpeed);
            }
            if (text != null)
            {
                text.color = Color.Lerp(text.color, textFx.activeColor, fxSpeed);
                text.rectTransform.sizeDelta = Vector2.Lerp(text.rectTransform.sizeDelta, defTextImg * imageFx.activeSize, fxSpeed);
            }
        }
        else
        {
            if (image != null)
            {
                image.color = Color.Lerp(image.color, imageFx.idleColor, fxSpeed);
                image.rectTransform.sizeDelta = Vector2.Lerp(image.rectTransform.sizeDelta, defTextImg, fxSpeed);
            }
            if (text != null)
            {
                text.color = Color.Lerp(text.color, textFx.idleColor, fxSpeed);
                text.rectTransform.sizeDelta = Vector2.Lerp(text.rectTransform.sizeDelta, defTextImg, fxSpeed);
            }
        }
    }
    bool active = false;
    void OnMouseEnter(BaseEventData e)
    {
        active = true;
        if (hoverSfx != null) AudioSource.PlayClipAtPoint(hoverSfx, Vector3.zero);


    }

    void OnMouseExit(BaseEventData e)
    {
        active = false;

    }
}

[Serializable]
public class BasicUIEffect
{
    public Color idleColor;
    public Color activeColor;

    public float activeSize;
}