using UnityEngine;
using Unity.Netcode;

namespace Northbound
{
    /// <summary>
    /// 블랙스미스 건물 - 업그레이드 구매 가능
    /// </summary>
    public class Blacksmith : NetworkBehaviour, IInteractable, IVisionProvider, ITeamMember
    {
        [Header("Vision Settings")]
        [Tooltip("블랙스미스가 제공하는 시야 범위")]
        public float visionRange = 10f;

        [Header("Team")]
        [Tooltip("건물의 팀")]
        public TeamType initialTeam = TeamType.Player;

        [Header("UI Reference")]
        [SerializeField] private GameObject _upgradePopupPrefab;

        private GameObject _popupInstance;
        private UpgradeListPopup _upgradePopup;

        private void Awake()
        {
            // 프리팹이 없으면 Resources에서 로드
            if (_upgradePopupPrefab == null)
            {
                _upgradePopupPrefab = Resources.Load<GameObject>("UI/Upgrade/UpgradeListPopup");
            }
        }

        #region IInteractable Implementation

        public bool CanInteract(ulong playerId)
        {
            return true;
        }

        public void Interact(ulong playerId)
        {
            OpenUpgradePopup(playerId);
        }

        public string GetInteractionPrompt()
        {
            return "[F] Upgrade";
        }

        public string GetInteractionAnimation()
        {
            return "";
        }

        public EquipmentData GetEquipmentData()
        {
            return null;
        }

        public Transform GetTransform()
        {
            return transform;
        }

        #endregion

        private void OpenUpgradePopup(ulong playerId)
        {
            // 플레이어의 UpgradeManager와 Stats 찾기
            var playerObj = GetPlayerObject(playerId);
            if (playerObj == null)
            {
                Debug.LogWarning($"[Blacksmith] 플레이어 {playerId}를 찾을 수 없습니다.");
                return;
            }

            var upgradeManager = playerObj.GetComponent<PlayerUpgradeManager>();
            var playerStats = playerObj.GetComponent<PlayerStats>();

            if (upgradeManager == null || playerStats == null)
            {
                Debug.LogWarning("[Blacksmith] PlayerUpgradeManager 또는 PlayerStats가 없습니다.");
                return;
            }

            // 팝업 생성
            if (_popupInstance == null && _upgradePopupPrefab != null)
            {
                _popupInstance = Instantiate(_upgradePopupPrefab);
                _upgradePopup = _popupInstance.GetComponent<UpgradeListPopup>();

                if (_upgradePopup == null)
                {
                    _upgradePopup = _popupInstance.AddComponent<UpgradeListPopup>();
                }
            }

            // 팝업 초기화 및 열기
            if (_upgradePopup != null)
            {
                _upgradePopup.Initialize(upgradeManager, playerStats);
            }
        }

        private GameObject GetPlayerObject(ulong playerId)
        {
            if (NetworkManager.Singleton == null) return null;

            // NetworkManager에서 플레이어 오브젝트 찾기
            foreach (var netObj in NetworkManager.Singleton.SpawnManager.SpawnedObjects.Values)
            {
                var controller = netObj.GetComponent<NetworkPlayerController>();
                if (controller != null && controller.OwnerPlayerId == playerId)
                {
                    return netObj.gameObject;
                }
            }

            return null;
        }

        public override void OnDestroy()
        {
            if (_popupInstance != null)
            {
                Destroy(_popupInstance);
            }
            base.OnDestroy();
        }

        #region NetworkBehaviour Overrides

        public override void OnNetworkSpawn()
        {
            if (IsServer)
            {
                // 시야 제공자로 등록
                FogOfWarSystem.Instance?.RegisterVisionProvider(this);
            }
        }

        public override void OnNetworkDespawn()
        {
            if (IsServer)
            {
                // 시야 제공자 등록 해제
                FogOfWarSystem.Instance?.UnregisterVisionProvider(this);
            }
        }

        #endregion

        #region IVisionProvider Implementation

        public ulong GetOwnerId() => 0; // 블랙스미스는 모든 플레이어에게 시야 제공

        public float GetVisionRange() => visionRange;

        Transform IVisionProvider.GetTransform() => transform;

        public bool IsActive() => IsSpawned;

        TeamType IVisionProvider.GetTeam() => initialTeam;

        #endregion

        #region ITeamMember Implementation

        public TeamType GetTeam() => initialTeam;

        public bool IsDead() => false; // 블랙스미스는 파괴되지 않음

        public void SetTeam(TeamType team)
        {
            // 블랙스미스의 팀은 변경할 수 없음
            Debug.LogWarning("[Blacksmith] 블랙스미스의 팀은 변경할 수 없습니다.");
        }

        #endregion
    }
}