using Unity.Netcode;
using UnityEngine;

namespace Northbound
{
    /// <summary>
    /// 액션 - 공격 (팀 시스템 + 장비 시스템 적용)
    /// </summary>
    public class AttackAction : NetworkBehaviour, IAction
    {
        [Header("Attack Settings")]
        public float attackRange = 2f;
        public int attackDamage = 10;
        public float attackCooldown = 0.5f;
        public LayerMask attackableLayer = ~0;

        [Header("Animation")]
        public string attackAnimationTrigger = "Attack";
        public bool useAnimationEvents = true;
        public bool blockDuringAnimation = true;

        [Header("Equipment")]
        public bool useEquipment = true;
        public EquipmentData equipmentData;

        [Header("Visual")]
        public GameObject attackEffectPrefab;
        public Transform attackPoint;

        private float _lastAttackTime;
        private Animator _animator;
        private ITeamMember _teamMember;
        private EquipmentSocket _equipmentSocket;
        private bool _isAttacking = false;
        private bool _isWeaponEquipped = false;

        private void Awake()
        {
            _animator = GetComponent<Animator>();
            _teamMember = GetComponent<ITeamMember>();
            _equipmentSocket = GetComponent<EquipmentSocket>();
        }

        public bool CanExecute(ulong playerId)
        {
            if (blockDuringAnimation && _isAttacking)
                return false;

            return Time.time - _lastAttackTime >= attackCooldown;
        }

        public void Execute(ulong playerId)
        {
            if (!CanExecute(playerId))
                return;

            _lastAttackTime = Time.time;
            _isAttacking = true;

            // 장비 장착 (애니메이션 이벤트 사용 안 할 경우)
            if (!useAnimationEvents && useEquipment && !_isWeaponEquipped)
            {
                if (equipmentData != null && equipmentData.attachOnStart)
                {
                    AttachWeapon();
                }
            }

            // 애니메이션 재생
            PlayAttackAnimation();

            // 애니메이션이 없으면 즉시 공격 실행
            if (_animator == null || string.IsNullOrEmpty(attackAnimationTrigger))
            {
                PerformAttack();
                _isAttacking = false;
            }
        }

        private void PerformAttack()
        {
            Vector3 attackOrigin = attackPoint != null ? attackPoint.position : transform.position;
            Collider[] hits = Physics.OverlapSphere(attackOrigin, attackRange, attackableLayer);

            foreach (Collider hit in hits)
            {
                if (hit.transform.root == transform.root)
                    continue;

                var targetDamageable = hit.GetComponent<IDamageable>();
                var targetTeamMember = hit.GetComponent<ITeamMember>();

                if (targetDamageable != null)
                {
                    if (_teamMember != null && targetTeamMember != null)
                    {
                        if (!TeamManager.CanAttack(_teamMember, targetTeamMember))
                        {
                            continue;
                        }
                    }

                    var netObj = hit.GetComponent<NetworkObject>();
                    if (netObj != null)
                    {
                        AttackServerRpc(NetworkObjectId, netObj.NetworkObjectId);
                    }
                }
            }
        }

        [Rpc(SendTo.Server, InvokePermission = RpcInvokePermission.Everyone)]
        private void AttackServerRpc(ulong attackerNetworkId, ulong targetNetworkId)
        {
            if (NetworkManager.Singleton.SpawnManager.SpawnedObjects.TryGetValue(targetNetworkId, out NetworkObject targetObj))
            {
                var damageable = targetObj.GetComponent<IDamageable>();
                damageable?.TakeDamage(attackDamage, attackerNetworkId);
            }
        }

        private void PlayAttackAnimation()
        {
            if (_animator != null && !string.IsNullOrEmpty(attackAnimationTrigger))
            {
                _animator.SetTrigger(attackAnimationTrigger);
            }

            if (attackEffectPrefab != null && attackPoint != null)
            {
                GameObject effect = Instantiate(attackEffectPrefab, attackPoint.position, attackPoint.rotation);
                Destroy(effect, 1f);
            }
        }

        // ========================================
        // Animation Event 함수들
        // ========================================

        public void OnEquipWeapon()
        {
            if (!useAnimationEvents || !useEquipment) return;
            AttachWeapon();
        }

        public void OnEquipWeapon(string socketName)
        {
            if (!useAnimationEvents || !useEquipment) return;
            AttachWeapon(socketName);
        }

        public void OnUnequipWeapon()
        {
            if (!useAnimationEvents || !useEquipment) return;
            DetachWeapon();
        }

        public void OnUnequipWeapon(string socketName)
        {
            if (!useAnimationEvents || !useEquipment) return;
            DetachWeapon(socketName);
        }

        public void OnAttackHit()
        {
            PerformAttack();
        }

        public void OnAttackComplete()
        {
            _isAttacking = false;

            if (useEquipment && equipmentData != null && equipmentData.detachOnEnd && !equipmentData.keepEquipped)
            {
                DetachWeapon();
            }
        }

        // ========================================
        // 장비 관리 함수들
        // ========================================

        private void AttachWeapon(string socketName = null)
        {
            if (_equipmentSocket == null || equipmentData == null)
            {
                Debug.LogWarning("[AttackAction] EquipmentSocket 또는 EquipmentData가 없습니다.");
                return;
            }

            if (equipmentData.equipmentPrefab == null)
            {
                Debug.LogWarning("[AttackAction] 무기 프리팹이 설정되지 않았습니다.");
                return;
            }

            string socket = socketName ?? equipmentData.socketName;
            _equipmentSocket.AttachToSocket(socket, equipmentData.equipmentPrefab);
            _isWeaponEquipped = true;
        }

        private void DetachWeapon(string socketName = null)
        {
            if (_equipmentSocket == null)
                return;

            string socket = socketName ?? equipmentData?.socketName;

            if (!string.IsNullOrEmpty(socket))
            {
                _equipmentSocket.DetachFromSocket(socket);
                _isWeaponEquipped = false;
            }
        }

        public void EquipWeapon()
        {
            if (!_isWeaponEquipped && useEquipment)
            {
                AttachWeapon();
            }
        }

        public void UnequipWeapon()
        {
            if (_isWeaponEquipped)
            {
                DetachWeapon();
            }
        }

        public string GetActionName()
        {
            return "Attack";
        }

        public string GetActionAnimation()
        {
            return attackAnimationTrigger;
        }

        public EquipmentData GetEquipmentData()
        {
            return equipmentData;
        }

        private void OnDrawGizmosSelected()
        {
            Vector3 attackOrigin = attackPoint != null ? attackPoint.position : transform.position;
            Gizmos.color = Color.red;
            Gizmos.DrawWireSphere(attackOrigin, attackRange);
        }

        public override void OnDestroy()
        {
            // 무기 정리
            if (_isWeaponEquipped)
            {
                DetachWeapon();
            }

            base.OnDestroy();
        }

        public bool IsAttacking => _isAttacking;
    }
}