using Assets.Scripts;
using DG.Tweening;
using System.Collections;
using System.Collections.Generic;
using System.Threading;
using UnityEngine;
using UnityEngine.UI;

public class QuickLoginScroll : MonoBehaviour
{
    // Start is called before the first frame update
    private ScrollRect scroll;
    private Transform content,lightbg;
    private float contentSize;
    private int count;
    [SerializeField] Button L, R;
    void Start()
    {
        scroll = gameObject.GetComponent<ScrollRect>();
        content = gameObject.transform.Find("Viewport").Find("Content");
        lightbg = transform.parent.Find("Light");
        //Initial();
        if (L != null)
        {
            UIManager.AddEvent(L.gameObject, UnityEngine.EventSystems.EventTriggerType.PointerClick,(b)=> 
            {
                goLeft();
            });
            //L.onClick.AddListener(goLeft);
        }
        if (R != null)
        {
            UIManager.AddEvent(R.gameObject, UnityEngine.EventSystems.EventTriggerType.PointerClick, (b) =>
            {
                goRight();
            });
            //R.onClick.AddListener(goRight);
        }
    }

    private void doAni()
    {
        lightbg.GetComponent<Image>().color = Utils.HexToColorHtml("#ffffff00");
        lightbg.GetComponent<Image>().gameObject.SetActive(false);
        int index = (int)System.Math.Round(
                    (scroll.horizontalNormalizedPosition + (contentSize / 2)) / contentSize,
                    0);
        content.GetChild(index).GetComponent<QuickLoginUser>().setNoActive();
        //lightbg.GetComponent<Image>().DOFade(0, 0.15f);
    }

    public void Initial() 
    {
        count = content.childCount;
        if (content.childCount - 2 > 0)
        {
            contentSize = 1f / (content.childCount - 2);
        }
        else 
        {
            contentSize = 0;
        }
        //scroll.horizontalNormalizedPosition = 0;
        Canvas.ForceUpdateCanvases();
        var i = PlayerPrefs.GetInt("UserInfoIndex");
        Debug.Log($"51 {i}");
        scroll.horizontalNormalizedPosition = contentSize/2+i*contentSize;
        SetColor();
    }
    void goLeft()
    {
        if (scroll.horizontalNormalizedPosition <= contentSize) return;
        goMove(-1);
    }
    void goRight()
    {
        if ((scroll.horizontalNormalizedPosition + contentSize) >= 1) return;
        goMove();
    }
    void goMove(int i = 1) 
    {
        doAni();
        if (!start) startPosition = scroll.horizontalNormalizedPosition;
        start = true;
        scrollValue = i*contentSize / 30;
    }
    private bool start = false;
    private float scrollValue = 0, totalScrollValue = 0, startPosition = 0;
    void SetColor()
    {
        int index = (int)System.Math.Round(
                    (scroll.horizontalNormalizedPosition + (contentSize / 2)) / contentSize,
                    0);
        //lightbg.GetComponent<Image>().gameObject.SetActive(true);
        //lightbg.GetComponent<Image>().DOFade(1, 0.2f);
        //content.GetChild(index).GetComponent<QuickLoginUser>().setActive();
        for (int i = 1; i < content.childCount - 1; i++)
        {
            string c;
            if (i == index)
            {
                lightbg.GetComponent<Image>().gameObject.SetActive(true);
                lightbg.GetComponent<Image>().DOFade(1, 0.2f);
                content.GetChild(i).GetComponent<QuickLoginUser>().setActive();
                //
            }
            else
            {
                content.GetChild(i).GetComponent<QuickLoginUser>().setNoActive();
            }
        }
    }
    // Update is called once per frame
    void Update()
    {
        if (start)
        {
            scroll.horizontalNormalizedPosition += scrollValue;
            totalScrollValue += scrollValue;
            if (System.Math.Abs(totalScrollValue) >= contentSize)
            {
                scrollValue = 0;
                start = false;
                scroll.horizontalNormalizedPosition = startPosition + (totalScrollValue<0?-1:1)*contentSize;
                //Debug.Log();
                SetColor();
                totalScrollValue = 0;
            }
        }
    }
}