using System;
using System.Collections;
using Cinemachine;
using Sirenix.OdinInspector;
using UnityEngine;
using UnityEngine.InputSystem;
using UnityEngine.Serialization;

// ReSharper disable once CheckNamespace
namespace BlueWaterProject
{
    public class CameraManager : Singleton<CameraManager>
    {
        public Camera MainCam { get; private set; }
        [Title("Dredge Cam")]
        [Required("드렛지 카메라를 넣어주세요.")]
        public CinemachineVirtualCamera dredgeCam;
        private CinemachineOrbitalTransposer dredgeCamOrbitalTransposer;
        [Range(0,1000)]
        public int rotateSpeed = 10;
        private Coroutine currentCoroutine;
    
        [Required("보트갑판 카메라를 넣어주세요.")]
        public CinemachineVirtualCamera shipDeckCam;
    
        [Required("조준 카메라를 넣어주세요.")]
        public CinemachineFreeLook takeAimCam;

        [Required("보트안 카메라를 넣어주세요.")]
        public CinemachineVirtualCamera inShipCam;
        private Vector3 inShipCamOrigenalOffset;
    
        public float sensitivity = 0.01f;
    
        [MinMaxSlider(2, 50, true)]
        public Vector2 heightLimits = new Vector2(2, 50);
        
        [Title("InShip Change Offset")]
        private Vector3 targetOffset;
        private Vector3 startingOffset;
        private float elapsedTime = 0;
        private float duration = 0.5f;
        private bool isTransitioning = false;
        
        protected override void OnAwake()
        {
            MainCam = Camera.main;
            inShipCamOrigenalOffset = inShipCam.GetCinemachineComponent<CinemachineTransposer>().m_FollowOffset;
        }

        private void Start()
        {
            dredgeCamOrbitalTransposer = dredgeCam.GetCinemachineComponent<CinemachineOrbitalTransposer>();
        }

        private void Update()
        {
            TakeCamMovement();
            DredgeCamRotate();
        }

        private void FixedUpdate()
        {
            if (isTransitioning)
            {
                SmoothTransitionFixedUpdate();
            }
        }

        public void CamAssaultMode()
        {
            dredgeCam.Priority = 0;
            shipDeckCam.Priority = 0;
            inShipCam.Priority = 0;
        }
    
        public void CamDredgeMode()
        {
            dredgeCam.Priority = 1;
            shipDeckCam.Priority = 0;
            inShipCam.Priority = 0;
        }
    
        public void CamShipDeckMode()
        {
            shipDeckCam.Priority = 1;
            dredgeCam.Priority = 0;
            inShipCam.Priority = 0;
        }
        
        public void CamInShipMode()
        {
            inShipCam.Priority = 1;
            dredgeCam.Priority = 0;
            shipDeckCam.Priority = 0;
        }

        private void TakeCamMovement()
        {
            var mouseDelta = Mouse.current.delta.ReadValue();

            var newPosition = takeAimCam.transform.position;
            newPosition.y += mouseDelta.y * sensitivity;
            newPosition.y = Mathf.Clamp(newPosition.y, heightLimits.x, heightLimits.y);
            newPosition.x = GameManager.Inst.ShipPlayer.transform.position.x;
            newPosition.z = GameManager.Inst.ShipPlayer.transform.position.z;
            takeAimCam.transform.position = newPosition;


            // Rotate around Y axis (Up direction)
            takeAimCam.transform.RotateAround(takeAimCam.transform.position, Vector3.up, mouseDelta.x * sensitivity);
        }

        public void CamTakeAim(bool isTakeAim)
        {
            takeAimCam.Priority = isTakeAim ? 2 : 0;
            float yRotation = dredgeCam.transform.rotation.eulerAngles.y;
            takeAimCam.transform.rotation =
                Quaternion.Euler(takeAimCam.transform.rotation.eulerAngles.x, yRotation, takeAimCam.transform.rotation.eulerAngles.z);
        }
    
        private void DredgeCamRotate()
        {
            if (Input.GetMouseButtonDown(1))
            {
                //dredgeCam의 X Axis의 Speed를 변경
                dredgeCamOrbitalTransposer.m_XAxis.m_MaxSpeed = rotateSpeed;
                dredgeCamOrbitalTransposer.m_XAxis.m_InputAxisName = "Mouse X";
                dredgeCamOrbitalTransposer.m_RecenterToTargetHeading.m_enabled = false;
            }
            else if (Input.GetMouseButtonUp(1))
            {
                //dredgeCam의 X Axis의 Speed를 원래대로
                dredgeCamOrbitalTransposer.m_XAxis.m_MaxSpeed = 0;
                dredgeCamOrbitalTransposer.m_XAxis.m_InputAxisName = "";
                dredgeCamOrbitalTransposer.m_RecenterToTargetHeading.m_enabled = true;
            }
        }

        private void StartSmoothTransition(Vector3 newTargetOffset)
        {
            targetOffset = newTargetOffset;
            var transposer = inShipCam.GetCinemachineComponent<CinemachineTransposer>();
            if (transposer != null)
            {
                startingOffset = transposer.m_FollowOffset;
            }
            elapsedTime = 0;
            isTransitioning = true;
        }

        private void SmoothTransitionFixedUpdate()
        {
            var transposer = inShipCam.GetCinemachineComponent<CinemachineTransposer>();
            if (transposer != null)
            {
                if (elapsedTime < duration)
                {
                    elapsedTime += Time.fixedDeltaTime;
                    float t = elapsedTime / duration;
                    transposer.m_FollowOffset = Vector3.Lerp(startingOffset, targetOffset, t);
                }
                else
                {
                    transposer.m_FollowOffset = targetOffset;
                    isTransitioning = false;
                }
            }
        }
        
        public void ChangeInShipFollowAndLookAt(Transform target)
        {
            if (!GameManager.Inst.IsInShipMode) return;
            inShipCam.Follow = target;
            inShipCam.LookAt = target;
            var targetOffset = new Vector3(0, 9, -10);
            StartSmoothTransition(targetOffset);
        }
        
        public void RestoreInShipFollowAndLookAt()
        {
            if (!GameManager.Inst.IsInShipMode) return;
            var transform1 = GameManager.Inst.InShipPlayer.transform;
            inShipCam.Follow = transform1;
            inShipCam.LookAt = transform1;
            var targetOffset = inShipCamOrigenalOffset;
            StartSmoothTransition(targetOffset);
        }
    }
}