using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using Unity.VisualScripting;
using UnityEngine;

public class UIAnimation : MonoBehaviour, IUIShow
{
    public Vector2 Direction;
    public float Speed = 500f;
    private RectTransform myRect;
    private bool run;
    private bool isHide;
    private Vector2 defaultPos;
    private Vector2 dir;

        void Start()
        {
            myRect = GetComponent<RectTransform>();
        run = false;

        defaultPos = transform.position;
        

        if (SceneTypeManager.Inst.IsVRMode)
        {
            Hide();
        }
    }

    float GetTargetPos(float dir, float pos, float sizeDelta)
    {
        float targetPos = 0;
        if (dir > 0)
        {
            targetPos = pos - sizeDelta / 2;
        }
        else if (dir < 0)
        {
            targetPos = pos + sizeDelta / 2;
        }

        return targetPos;
    }
                   
    bool IsStop(float dir, float pos, float oldPos)
    {
        bool stop = false;
        if (dir > 0)
        {
            if (pos >= oldPos)
            {
                stop = true;
            }
        }
        else if (dir < 0)
        {
            if (pos <= oldPos)
            {
                stop = true;
            }
        }
        else
        {
            stop = true;
        }
        return stop;
    }

    void Update()
    {
        if (run)
        {
            if (!isHide)
            {
                dir = Direction;
                myRect.anchoredPosition += dir * Speed * Time.deltaTime;

                float targetPosX = GetTargetPos(Direction.x, transform.position.x, myRect.sizeDelta.x);
                float targetPosY = GetTargetPos(Direction.y, transform.position.y, myRect.sizeDelta.y);
                if (targetPosX < 0 || targetPosY < 0 || targetPosX > Screen.width || targetPosY > Screen.height)
                {
                    run = false;
                    isHide = true;
                }
            }
            else
            {
                dir = Direction * -1;
                myRect.anchoredPosition += dir * Speed * Time.deltaTime;

                bool stopX = IsStop(dir.x, transform.position.x, defaultPos.x);
                bool stopY = IsStop(dir.y, transform.position.y, defaultPos.y);

                if (stopX && stopY)
                {
                    run = false;
                    transform.position = defaultPos;
                    isHide = false;
                }
            }
        }
    }

    public void Show()
    {
        if (run) {
            run = false;
            isHide = true;
        }

        if (isHide)
        {
            run = true;
        }
    }

    public void Hide()
    {
        if (run) {
            run = false;
            isHide = false;
        }

        if (!isHide)
        {
            run = true;
        }
    }

    public void Stop()
    {
        if (run)
        {
            run = false;
        }
    }
}