using UnityEngine;
using static OnlyScove.Scripts.CameraController;

namespace OnlyScove.Scripts
{
    [System.Serializable]
    public class CameraRotationHandler
    {
        [Header("Rotation Settings")]
        [SerializeField] private float sensitivity = 0.1f;
        [SerializeField] private float minVerticalAngle = -45f;
        [SerializeField] private float maxVerticalAngle = 45f;
        [SerializeField] private bool invertX;
        [SerializeField] private bool invertY;

        [Header("Auto Rotation")]
        [SerializeField] private bool useAutoRotation = true;
        [SerializeField] private float autoRotateDelay = 2.5f;
        [SerializeField] private float autoRotateSpeed = 2f;

        private float _rotationX;
        private float _rotationY;
        private float _lastInputTime;

        public Quaternion CurrentRotation { get; private set; } // Camera's actual rotation
        public Quaternion PlanarRotation => Quaternion.Euler(0f, _rotationY, 0f); // Horizontal rotation (for player body in FPV)

        public void Initialize(Transform cameraTransform)
        {
            _rotationX = cameraTransform.eulerAngles.x;
            _rotationY = cameraTransform.eulerAngles.y;
            _lastInputTime = Time.time;
            CurrentRotation = cameraTransform.rotation;
        }

        // New method to initialize rotation specifically for FPV
        public void InitializeFPV(Transform fpvTargetTransform)
        {
            _rotationX = fpvTargetTransform.localEulerAngles.x; // Use local rotation for vertical angle in FPV
            _rotationY = fpvTargetTransform.eulerAngles.y;     // Use world rotation for horizontal angle
            _lastInputTime = Time.time;
            CurrentRotation = fpvTargetTransform.rotation; // Camera starts matching fpvTarget rotation
        }


        public void HandleRotation(InputReader inputReader, Transform followTarget, float rotationSmoothTime, CameraViewMode viewMode)
        {
            if (inputReader == null) return;

            // Debug for rotation
            if (inputReader.LookInput.sqrMagnitude > 0.001f)
            {
                Debug.Log($"[CameraRotationHandler] LookInput: {inputReader.LookInput}, _rotationX: {_rotationX}, _rotationY: {_rotationY}, ViewMode: {viewMode}");
            }

            // Update _lastInputTime regardless of view mode if there's look input
            if (inputReader.LookInput.magnitude > 0.01f)
            {
                _lastInputTime = Time.time;
            }

            float invertXVal = (invertX) ? -1 : 1;
            float invertYVal = (invertY) ? -1 : 1;

            _rotationX -= inputReader.LookInput.y * invertYVal * sensitivity * Time.deltaTime;
            _rotationX = Mathf.Clamp(_rotationX, minVerticalAngle, maxVerticalAngle);

            _rotationY += inputReader.LookInput.x * invertXVal * sensitivity * Time.deltaTime;

            if (viewMode == CameraViewMode.ThirdPerson)
            {
                // Auto-Correction for TPV
                if (useAutoRotation && Time.time - _lastInputTime > autoRotateDelay)
                {
                    if (inputReader.MoveInput.magnitude > 0.1f)
                    {
                        float targetYaw = followTarget.eulerAngles.y;
                        _rotationY = Mathf.LerpAngle(_rotationY, targetYaw, autoRotateSpeed * Time.deltaTime);
                    }
                }
                Quaternion targetRotation = Quaternion.Euler(_rotationX, _rotationY, 0f);
                CurrentRotation = Quaternion.Slerp(CurrentRotation, targetRotation, rotationSmoothTime * Time.deltaTime);
            }
            else // FirstPerson
            {
                // In FPV, CurrentRotation *is* the camera's rotation (head rotation)
                // The horizontal part of this (_rotationY) will also be used to rotate the player's body.
                Quaternion targetRotation = Quaternion.Euler(_rotationX, _rotationY, 0f);
                CurrentRotation = Quaternion.Slerp(CurrentRotation, targetRotation, rotationSmoothTime * Time.deltaTime);
            }
        }
    }
}