using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraLerpMoveController : MonoSingleton<CameraLerpMoveController>
{
    private Transform cameraMoveTarget;
    private Camera mainCamera;
    private bool isMoveLerp;
    public static float moveLerpSpeed = 2;
    public static float rotLerpSpeed = 2;

    private RoamCameraController m_RoamCameraController;
    
    public void Start()
    {
        mainCamera = Camera.main;
        if (mainCamera == null)
        {
            mainCamera = GameObject.FindObjectOfType<Camera>();
        }

        if (mainCamera.GetComponent<RoamCameraController>() != null)
        {
            m_RoamCameraController = mainCamera.GetComponent<RoamCameraController>();
        }
    }

    public void SetCameraMoveTarget(Transform target)
    {
        cameraMoveTarget = target;
        isMoveLerp = true;
    }

    // Update is called once per frame
    void Update()
    {
        if (!isMoveLerp || cameraMoveTarget == null) return;

        if (m_RoamCameraController != null)
        {
            m_RoamCameraController.Focus(cameraMoveTarget.transform.position,cameraMoveTarget.transform.rotation.eulerAngles,moveLerpSpeed);
            
            isMoveLerp = false;
        }
        else
        {
            mainCamera.transform.position = Vector3.Lerp(mainCamera.transform.position, cameraMoveTarget.transform.position, moveLerpSpeed * Time.deltaTime);
            mainCamera.transform.rotation = Quaternion.Lerp(mainCamera.transform.rotation, cameraMoveTarget.transform.rotation, rotLerpSpeed * Time.deltaTime);
            
            if (Vector3.Distance(mainCamera.transform.position, cameraMoveTarget.transform.position) < 0.05f
                && Quaternion.Angle(mainCamera.transform.rotation, cameraMoveTarget.transform.rotation) < 0.05f)
            {
                isMoveLerp = false;
            }
            else if (CameraMoveCheck())
            {
                isMoveLerp = false;
            }
        }
    }

    public bool CameraMoveCheck()
    {
        return Input.GetKey(KeyCode.W) || Input.GetKey(KeyCode.S) || Input.GetKey(KeyCode.A) || Input.GetKey(KeyCode.D) || Input.GetMouseButtonDown(1);
    }
}