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

namespace BlueWater
{
    public enum TycoonCameraType
    {
        Base = 0,
        Storage
    }
    
    public class TycoonCameraManager : Singleton<TycoonCameraManager>
    {
        // Components
        #region Components
        
        [Title("카메라")]
        [field: SerializeField]
        public Camera MainCamera { get; private set; }
        
        [field: SerializeField]
        public Camera UiCamera { get; private set; }
        
        [field: SerializeField]
        public Camera LiquidOverlayCamera { get; private set; }
        
        [SerializeField]
        private Transform cameraLocation;
        
        [field: SerializeField]
        public CinemachineCamera BaseCamera { get; private set; }
        
        [field: SerializeField]
        public CinemachineCamera StorageCamera { get; private set; }

        [SerializeField]
        private Transform _confinerCollider;

        [SerializeField]
        private Vector3 _transparencySortAxis;

        [Title("줌")]
        [SerializeField]
        private Vector2 _cameraDistance = new(5f, 10f);

        [SerializeField, Range(0.01f, 1f)]
        private float _zoomPower = 0.5f;
        
        [SerializeField, Range(1f, 10f)]
        private float _zoomLerpSpeed = 5f;

        [SerializeField]
        private Vector3 _zoomOutConfinerScale = new(1f, 1f, 0f);
        
        [SerializeField]
        private Vector3 _zoomInConfinerScale = new(10f, 10f, 10f);
        
        // Variables
        private CinemachineBrain _cinemachineBrain;
        private CinemachinePositionComposer _baseCameraComposer;
        private List<CinemachineCamera> _cinemachineCameras = new();
        
        private float _targetCameraDistance;
        
        #endregion

        // Unity events
        #region Unity events

        private void OnValidate()
        {
            SetTransparencySortAxis();
        }

        protected override void OnAwake()
        {
            Initialize();
        }
        
        private void Start()
        {
            _targetCameraDistance = _baseCameraComposer.CameraDistance;
            
            EventManager.OnCameraZoomOut += ZoomOut;
            EventManager.OnCameraZoomIn += ZoomIn;
            
            if (!GameManager.Instance) return;
            
            GameManager.Instance.OnInstantiatePlayer += SetFollow;
        }

        private void LateUpdate()
        {
            var lerpTime = Time.deltaTime * _zoomLerpSpeed;
            _baseCameraComposer.CameraDistance = Mathf.Lerp(
                _baseCameraComposer.CameraDistance, 
                _targetCameraDistance, 
                lerpTime
            );
            
            var normalizedT = (_baseCameraComposer.CameraDistance - _cameraDistance.x) / (_cameraDistance.y - _cameraDistance.x);
            _confinerCollider.localScale = Vector3.Lerp(
                _zoomInConfinerScale,
                _zoomOutConfinerScale,
                normalizedT
            );
        }

        private void OnDestroy()
        {
            EventManager.OnCameraZoomOut -= ZoomOut;
            EventManager.OnCameraZoomIn -= ZoomIn;
            
            if (!GameManager.Instance) return;
            
            GameManager.Instance.OnInstantiatePlayer -= SetFollow;
        }

        #endregion

        // Initialize methods
        #region Initialize methods
        
        [Button("셋팅 초기화")]
        private void Initialize()
        {
            cameraLocation = GameObject.Find("CinemachineCameras").transform;

            MainCamera = GetComponent<Camera>();
            UiCamera = MainCamera.transform.Find("UiCamera").GetComponent<Camera>();
            LiquidOverlayCamera = GameObject.Find("LiquidOverlayCamera").GetComponent<Camera>();
            _cinemachineBrain = GetComponent<CinemachineBrain>();
            
            BaseCamera = cameraLocation.Find("BaseCamera").GetComponent<CinemachineCamera>();
            StorageCamera = cameraLocation.Find("StorageCamera").GetComponent<CinemachineCamera>();

            _baseCameraComposer = BaseCamera.GetComponent<CinemachinePositionComposer>();
            
            _cinemachineCameras.Add(BaseCamera);
            _cinemachineCameras.Add(StorageCamera);

            SetMainCamera(TycoonCameraType.Base);
        }

        #endregion

        // Methods
        #region Methods
        
        public void SetFollow(Transform target)
        {
            BaseCamera.Follow = target;
        }

        public void SetMainCamera(TycoonCameraType tycoonCameraType)
        {
            var newMainCamera = tycoonCameraType switch
            {
                TycoonCameraType.Base => BaseCamera,
                TycoonCameraType.Storage => StorageCamera,
                _ => throw new ArgumentOutOfRangeException(nameof(tycoonCameraType), tycoonCameraType, null)
            };

            foreach (var element in _cinemachineCameras)
            {
                element.Priority = 0;
            }
            
            newMainCamera.Priority = 1;
            SetTransparencySortAxis();
        }

        private void SetTransparencySortAxis()
        {
            var camera = Camera.main;
            camera.transparencySortMode = TransparencySortMode.CustomAxis;
            camera.transparencySortAxis = _transparencySortAxis;
        }
        
        public void ZoomOut(float value)
        {
            _targetCameraDistance = Mathf.Min(
                _targetCameraDistance + value * _zoomPower, 
                _cameraDistance.y
            );
        }

        public void ZoomIn(float value)
        {
            _targetCameraDistance = Mathf.Max(
                _targetCameraDistance - value * _zoomPower, 
                _cameraDistance.x
            );
        }

        #endregion
    }
}