using UnityEngine;
using Unheimlich.Data.CameraSettings;
using Unheimlich.Gameplay.CameraControl;
using Unheimlich.Gameplay.Player;
using PlayerInput = Unheimlich.Managers.PlayerInputManager;

namespace Unheimlich.Gameplay.DetectiveBoard
{
    /// <summary>
    /// Controls player interaction with the detective board in world space.
    /// Uses CameraPanController for wide-angle camera movement across the board.
    /// Activates when player is in range and looking at the board.
    /// </summary>
    public class DetectiveBoardController : MonoBehaviour
    {
        [Header("References")]
        [SerializeField] private CameraPanController _cameraPanController;
        [SerializeField] private Transform _boardTransform;
        
        [Header("Settings")]
        [SerializeField] private CameraPanSettings _boardCameraPanSettings;
        [SerializeField] private float _activationRange = 2f;
        [SerializeField] private LayerMask _boardLayer;
        
        private Camera _playerCamera;
        private bool _isBoardActive;
        private CameraPanSettings _originalCameraPanSettings;
        private CameraHeadBob _cameraHeadBob;
        
        private void Awake()
        {
            _playerCamera = Camera.main;
            
            if (_cameraPanController == null)
            {
                _cameraPanController = FindFirstObjectByType<CameraPanController>();
            }
            
            _cameraHeadBob = FindFirstObjectByType<CameraHeadBob>();
        }
        
        private void Update()
        {
            if (_isBoardActive)
            {
                HandleBoardInteraction();
            }
            else
            {
                CheckForBoardActivation();
            }
        }
        
        /// <summary>
        /// Checks if player is looking at the board and in range to activate.
        /// </summary>
        private void CheckForBoardActivation()
        {
            if (_playerCamera == null || _boardTransform == null)
                return;
            
            float distanceToBoard = Vector3.Distance(_playerCamera.transform.position, _boardTransform.position);
            if (distanceToBoard > _activationRange)
                return;
            
            Ray ray = new Ray(_playerCamera.transform.position, _playerCamera.transform.forward);
            if (Physics.Raycast(ray, out RaycastHit hit, _activationRange, _boardLayer))
            {
                if (hit.transform.IsChildOf(_boardTransform) || hit.transform == _boardTransform)
                {
                    var interactAction = PlayerInput.GetInteractAction();
                    if (interactAction != null && interactAction.WasPressedThisFrame())
                    {
                        ActivateBoard();
                    }
                }
            }
        }
        
        /// <summary>
        /// Activates the detective board, switching to pan mode with wide-angle settings.
        /// </summary>
        public void ActivateBoard()
        {
            if (_cameraPanController == null || _boardCameraPanSettings == null)
            {
                Debug.LogError("[DetectiveBoardController] Missing required references!");
                return;
            }
            
            _isBoardActive = true;
            
            _originalCameraPanSettings = _cameraPanController.Settings;
            _cameraPanController.Settings = _boardCameraPanSettings;
            
            _cameraPanController.SaveOriginalState();
            _cameraPanController.AlignToTarget(_boardTransform, () =>
            {
                _cameraPanController.StartPan();
            });
            
            PlayerInput.SetContext(PlayerInput.InputContext.Listening);
            
            ApplyHeadBobSettings(_boardCameraPanSettings);
            
            Debug.Log("[DetectiveBoardController] Detective board activated");
        }
        
        /// <summary>
        /// Handles board interaction while active (panning and exit).
        /// </summary>
        private void HandleBoardInteraction()
        {
            if (_cameraPanController != null)
            {
                _cameraPanController.UpdatePan();
            }
            
            var exitAction = PlayerInput.GetExitAction();
            if (exitAction != null && exitAction.WasPressedThisFrame())
            {
                DeactivateBoard();
            }
        }
        
        /// <summary>
        /// Deactivates the board and returns to normal gameplay.
        /// </summary>
        public void DeactivateBoard()
        {
            if (!_isBoardActive)
                return;
            
            _isBoardActive = false;
            
            if (_cameraPanController != null)
            {
                _cameraPanController.StopPan();
                _cameraPanController.ReturnToOriginalPosition(() =>
                {
                    if (_originalCameraPanSettings != null)
                    {
                        _cameraPanController.Settings = _originalCameraPanSettings;
                    }
                });
            }
            
            PlayerInput.SetContext(PlayerInput.InputContext.Normal);
            
            RestoreHeadBob();
            
            Debug.Log("[DetectiveBoardController] Detective board deactivated");
        }
        
        /// <summary>
        /// Applies head bob settings based on CameraPanSettings configuration.
        /// </summary>
        private void ApplyHeadBobSettings(CameraPanSettings settings)
        {
            if (_cameraHeadBob == null || settings == null)
                return;
            
            _cameraHeadBob.SetMode(settings.HeadBobMode);
        }
        
        /// <summary>
        /// Restores head bob to normal behavior.
        /// </summary>
        private void RestoreHeadBob()
        {
            if (_cameraHeadBob == null)
                return;
            
            _cameraHeadBob.ClearOverride();
        }
        
        private void OnDrawGizmosSelected()
        {
            if (_boardTransform == null)
                return;
            
            Gizmos.color = _isBoardActive ? Color.green : Color.yellow;
            Gizmos.DrawWireSphere(_boardTransform.position, _activationRange);
        }
    }
}