using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using DG.Tweening;

public class WishPageCamera : MonoBehaviour
{

    public GameObject wishPageGroup;

    private GameObject [] wishPages;
    private float mouseSpeedX;
    private float mouseSpeedY;
    public float cameraSpeed;
    private Vector2 targetPos;

    public bool isFreeze = false;
    // Start is called before the first frame update
    void Start()
    {
        var wishPageList = wishPageGroup.GetComponentsInChildren<WishGodPageUI>();
        wishPages = new GameObject[wishPageList.Length];
        for(int i = 0; i < wishPageList.Length; ++i)
        {
            wishPages[i] = wishPageList[i].gameObject;
        }
    }
    
    public void SetCameraFreeze(bool _isFreeze)
    {
        isFreeze = _isFreeze;
    }

    void CheckMouseMovement()
    {
        if (Input.GetMouseButton(0))
        {
            mouseSpeedX = Input.GetAxis("Mouse X");
            if (Mathf.Abs(mouseSpeedX) < float.Epsilon) return;
            targetPos = transform.position - new Vector3(mouseSpeedX * cameraSpeed * Time.fixedDeltaTime, 0.0f, 0.0f);
            transform.position = Vector3.Slerp(transform.position, targetPos, cameraSpeed * Time.fixedDeltaTime);

        }
    }

    void CheckNearest()
    {
        if (Input.GetMouseButtonUp(0))
        {

            float nearestDistance = float.MaxValue;
        
            foreach(var wishPage in wishPages)
            {
                if (Mathf.Abs(wishPage.transform.position.x - transform.position.x) < nearestDistance)
                {
                    nearestDistance = Mathf.Abs(wishPage.transform.position.x - transform.position.x);
                    targetPos = wishPage.transform.position;
                }
            }
            transform.DOMove(targetPos, 0.3f);
        }
    }

    // Update is called once per frame
    void Update()
    {
        if (isFreeze) return;
        CheckMouseMovement();
        CheckNearest();
        //transform.position = Vector3.Lerp(transform.position, targetPos, cameraSpeed * Time.fixedDeltaTime);
    }
}