using System.Collections;
using System.Collections.Generic;
using Cinemachine;
using Sirenix.OdinInspector;
using UnityEngine;

// ReSharper disable once CheckNamespace
namespace BlueWaterProject
{
    public class OceanCamera : MonoBehaviour
    {
        [Title("초기화 방식")]
        [SerializeField] private bool autoInit = true;
        
        [field: Title("카메라")]
        [field: SerializeField] public CinemachineVirtualCamera BaseShipCam { get; private set; }

        private List<CinemachineVirtualCamera> cineCamList;
        private GameObject cineCams;
        private CinemachineFramingTransposer framingTransposer;
        private Coroutine distanceCoroutine;

        private float defaultDistance;
        
        private const int CINE_CAM_NUM = 1;
        
        private void Awake()
        {
            if (autoInit)
            {
                Init();
            }
            
            CameraManager.Inst.OceanCamera = this;
            CameraManager.Inst.MainCam = Camera.main;
        }
        
        [Button("셋팅 초기화")]
        private void Init()
        {
            cineCams = GameObject.Find("CineCameras");
            if (!cineCams)
            {
                Debug.LogError("cineCams is null error");
                return;
            }

            BaseShipCam = cineCams.transform.Find("BaseShipCam")?.GetComponent<CinemachineVirtualCamera>();
            if (!BaseShipCam)
            {
                Debug.LogError("BaseShipCam is null error");
                return;
            }
            framingTransposer = BaseShipCam.GetCinemachineComponent<CinemachineFramingTransposer>();
            defaultDistance = framingTransposer.m_CameraDistance;
            
            cineCamList = new List<CinemachineVirtualCamera>(CINE_CAM_NUM)
            {
                BaseShipCam
            };

            foreach (var cam in cineCamList)
            {
                cam.Priority = 0;
            }

            BaseShipCam.Priority = 1;

            CameraManager.Inst.MainCam = Camera.main;
        }

        public void ChangeDistance(float addDistance, float time)
        {
            if (distanceCoroutine != null) 
            {
                StopCoroutine(distanceCoroutine);
            }
            distanceCoroutine = StartCoroutine(ChangeDistanceCoroutine(addDistance, time));
        }

        private IEnumerator ChangeDistanceCoroutine(float addDistance, float time)
        {
            var changeDistance = framingTransposer.m_CameraDistance + addDistance;
            var updateTime = 0f;
            while (updateTime < time)
            {
                updateTime += Time.deltaTime;
                framingTransposer.m_CameraDistance = Mathf.Lerp(framingTransposer.m_CameraDistance,
                    changeDistance, updateTime / time);
                yield return null;
            }
            yield return null;
        }

        public void DefaultDistance(float time)
        {
            if (distanceCoroutine != null) 
            {
                StopCoroutine(distanceCoroutine);
            }
            distanceCoroutine = StartCoroutine(DefaultDistanceCoroutine(time));
        }
        
        private IEnumerator DefaultDistanceCoroutine(float time)
        {
            var updateTime = 0f;
            while (updateTime < time)
            {
                updateTime += Time.deltaTime;
                framingTransposer.m_CameraDistance = Mathf.Lerp(framingTransposer.m_CameraDistance,
                    defaultDistance, updateTime / time);
                yield return null;
            }
            framingTransposer.m_CameraDistance = defaultDistance;
            yield return null;
        }
    }
}