using Unity.Netcode;
using Unity.Netcode.Components;
using UnityEngine;
using UnityEngine.InputSystem;
using System.Collections.Generic;

namespace Northbound
{
    /// <summary>
    /// 상호작용 대상 없이 실행 가능한 액션들을 관리
    /// </summary>
    public class PlayerActionSystem : NetworkBehaviour
    {
        [Header("Actions")]
        public List<MonoBehaviour> actionComponents = new List<MonoBehaviour>();

        [Header("Animation")]
        public bool playAnimations = true;

        private Dictionary<string, IAction> _actions = new Dictionary<string, IAction>();
        private Animator _animator;
        private NetworkAnimator _networkAnimator;
        private NetworkPlayerController _networkPlayerController;
        private bool _isInputInitialized = false;

        // 로컬 플레이어인지 확인
        private bool IsLocalPlayer => _networkPlayerController != null && _networkPlayerController.IsLocalPlayer;
        private ulong LocalPlayerId => _networkPlayerController != null ? _networkPlayerController.OwnerPlayerId : OwnerClientId;

        private void Awake()
        {
            _animator = GetComponent<Animator>();
            _networkAnimator = GetComponent<NetworkAnimator>();
            _networkPlayerController = GetComponent<NetworkPlayerController>();
        }

        public override void OnNetworkSpawn()
        {
            // 액션 컴포넌트들을 딕셔너리에 등록 (모든 클라이언트에서)
            foreach (var component in actionComponents)
            {
                if (component is IAction action)
                {
                    _actions[action.GetActionName()] = action;
                }
            }

            // _ownerPlayerId 변경 이벤트 구독
            if (_networkPlayerController != null)
            {
                _networkPlayerController.OnOwnerChanged += OnOwnerPlayerIdChanged;
                _networkPlayerController.OnInputInitialized += TryInitializeInput;
            }

            // 이미 로컬 플레이어면 입력 초기화
            TryInitializeInput();
        }

        private void OnOwnerPlayerIdChanged(ulong newOwnerId)
        {
            TryInitializeInput();
        }

        private void TryInitializeInput()
        {
            if (!IsLocalPlayer) return;
            if (_isInputInitialized) return; // 이미 초기화됨
            if (_networkPlayerController.InputActions == null) return; // 아직 InputActions가 없음

            _isInputInitialized = true;
            _networkPlayerController.InputActions.Player.Attack.performed += OnAttack;
        }

        public override void OnNetworkDespawn()
        {
            if (_networkPlayerController != null)
            {
                _networkPlayerController.OnOwnerChanged -= OnOwnerPlayerIdChanged;
                _networkPlayerController.OnInputInitialized -= TryInitializeInput;

                // 입력 이벤트 해제
                if (_networkPlayerController.InputActions != null)
                {
                    _networkPlayerController.InputActions.Player.Attack.performed -= OnAttack;
                }
            }
        }

        private void OnAttack(InputAction.CallbackContext context)
        {
            // UI가 열려있으면 액션 실행 안 함
            if (UpgradeListPopup.IsOpen) return;

            // 플레이어가 죽어있으면 액션 실행 안 함
            if (_networkPlayerController != null && _networkPlayerController.IsDead()) return;

            ExecuteAction("Attack");
        }

        public void ExecuteAction(string actionName)
        {
            if (_actions.TryGetValue(actionName, out IAction action))
            {
                if (action.CanExecute(LocalPlayerId))
                {
                    string animTrigger = action.GetActionAnimation();
                    
                    // 서버에서 애니메이션 실행 (동기화를 위해)
                    if (playAnimations && !string.IsNullOrEmpty(animTrigger))
                    {
                        PlayAnimationServerRpc(animTrigger);
                    }

                    action.Execute(LocalPlayerId);
                }
            }
        }

        [Rpc(SendTo.Server)]
        private void PlayAnimationServerRpc(string animTrigger)
        {
            if (_networkAnimator != null && !string.IsNullOrEmpty(animTrigger))
            {
                _networkAnimator.SetTrigger(animTrigger);
            }
        }

        override public void OnDestroy()
        {
            // 입력 정리는 NetworkPlayerController에서 담당
            base.OnDestroy();
        }
    }
}