using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;

using Colosseum.AI;
using Colosseum.AI.BehaviorActions.Conditions;
using Colosseum.Enemy;

using UnityEditor;
using UnityEngine;

namespace Colosseum.Editor
{
    /// <summary>
    /// 드로그 Behavior Graph authoring 자산을 현재 BT 우선순위 구조로 재생성합니다.
    /// Check 노드는 ConditionalGuardAction + Condition 조합으로 구현됩니다.
    /// </summary>
    public static class RebuildDrogBehaviorAuthoringGraph
    {
        private const string GraphAssetPath = "Assets/_Game/AI/BT_Drog.asset";

        [MenuItem("Tools/Colosseum/Rebuild Drog Behavior Authoring Graph")]
        private static void Rebuild()
        {
            UnityEngine.Object graphAsset = AssetDatabase.LoadMainAssetAtPath(GraphAssetPath);
            if (graphAsset == null)
            {
                // 에셋이 없으면 기존 에셋 경로의 타입을 리플렉션으로 찾아 생성합니다.
                // BehaviorAuthoringGraph는 Unity.Behavior.Editor 어셈블리에 있습니다.
                Type authoringGraphType = null;
                foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies())
                {
                    authoringGraphType = assembly.GetType("Unity.Behavior.Authoring.BehaviorAuthoringGraph");
                    if (authoringGraphType != null)
                        break;
                }

                if (authoringGraphType == null)
                {
                    Debug.LogError("[DrogBTRebuild] BehaviorAuthoringGraph 타입을 모든 어셈블리에서 찾지 못했습니다.");
                    return;
                }

                graphAsset = ScriptableObject.CreateInstance(authoringGraphType);
                if (graphAsset == null)
                {
                    Debug.LogError("[DrogBTRebuild] BehaviorAuthoringGraph 인스턴스를 생성할 수 없습니다.");
                    return;
                }

                AssetDatabase.CreateAsset(graphAsset, GraphAssetPath);
                AssetDatabase.SaveAssets();
                Debug.Log("[DrogBTRebuild] 새 그래프 자산을 생성했습니다.");
            }

            try
            {
                Type authoringGraphType = graphAsset.GetType();
                Assembly authoringAssembly = authoringGraphType.Assembly;
                Assembly runtimeAssembly = typeof(Unity.Behavior.BehaviorGraph).Assembly;

                // 기본 리플렉션 메서드
                MethodInfo createNodeMethod = authoringGraphType.BaseType?.GetMethod("CreateNode", BindingFlags.Instance | BindingFlags.Public);
                MethodInfo connectEdgeMethod = authoringGraphType.BaseType?.GetMethod("ConnectEdge", BindingFlags.Instance | BindingFlags.Public);
                MethodInfo createNodePortsMethod = authoringGraphType.BaseType?.GetMethod("CreateNodePortsForNode", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
                MethodInfo buildRuntimeGraphMethod = authoringGraphType.GetMethod("BuildRuntimeGraph", BindingFlags.Instance | BindingFlags.Public);
                MethodInfo saveAssetMethod = authoringGraphType.BaseType?.GetMethod("SaveAsset", BindingFlags.Instance | BindingFlags.Public);
                MethodInfo setAssetDirtyMethod = authoringGraphType.BaseType?.GetMethod("SetAssetDirty", BindingFlags.Instance | BindingFlags.Public);
                MethodInfo getNodeInfoMethod = authoringAssembly.GetType("Unity.Behavior.NodeRegistry", true)
                    ?.GetMethod("GetInfo", BindingFlags.Static | BindingFlags.NonPublic);

                if (createNodeMethod == null || connectEdgeMethod == null || buildRuntimeGraphMethod == null || saveAssetMethod == null || setAssetDirtyMethod == null || getNodeInfoMethod == null)
                {
                    Debug.LogError("[DrogBTRebuild] Behavior Authoring 리플렉션 메서드를 찾지 못했습니다.");
                    return;
                }

                // ConditionalGuard 리플렉션 타입 (internal)
                Type conditionalGuardType = runtimeAssembly.GetType("Unity.Behavior.ConditionalGuardAction");
                Type conditionUtilityType = authoringAssembly.GetType("Unity.Behavior.ConditionUtility");
                Type conditionModelType = authoringAssembly.GetType("Unity.Behavior.ConditionModel");
                Type graphNodeModelType = authoringAssembly.GetType("Unity.Behavior.BehaviorGraphNodeModel");
                Type conditionInfoType = authoringAssembly.GetType("Unity.Behavior.ConditionInfo");

                if (conditionalGuardType == null) { Debug.LogError("[DrogBTRebuild] ConditionalGuardAction 타입을 찾지 못했습니다."); return; }
                if (conditionUtilityType == null) { Debug.LogError("[DrogBTRebuild] ConditionUtility 타입을 찾지 못했습니다."); return; }
                if (conditionModelType == null) { Debug.LogError("[DrogBTRebuild] ConditionModel 타입을 찾지 못했습니다."); return; }
                if (graphNodeModelType == null) { Debug.LogError("[DrogBTRebuild] BehaviorGraphNodeModel 타입을 찾지 못했습니다."); return; }
                if (conditionInfoType == null)
                {
                    Debug.LogError("[DrogBTRebuild] ConditionInfo 타입을 찾지 못했습니다.");
                    return;
                }

                Type branchCompositeType = runtimeAssembly.GetType("Unity.Behavior.BranchingConditionComposite");
                if (branchCompositeType == null)
                {
                    Debug.LogError("[DrogBTRebuild] BranchingConditionComposite 타입을 찾지 못했습니다.");
                    return;
                }

                // SetField(string, VariableModel, Type) — 제네릭 버전과 구분하기 위해 파라미터 수로 필터링
                MethodInfo setFieldMethod = conditionModelType.GetMethods(BindingFlags.Instance | BindingFlags.NonPublic)
                    .FirstOrDefault(m => m.Name == "SetField" && !m.IsGenericMethod && m.GetParameters().Length == 3);

                // SetField<T>(string, T) — BehaviorGraphNodeModel 기반 클래스에서 조회 (ConditionModel과 Action 노드 모두 사용)
                MethodInfo setFieldValueMethod = graphNodeModelType.GetMethods(BindingFlags.Instance | BindingFlags.NonPublic)
                    .FirstOrDefault(m => m.Name == "SetField" && m.IsGenericMethod && m.GetParameters().Length == 2);

                if (setFieldMethod == null)
                {
                    Debug.LogError("[DrogBTRebuild] ConditionModel.SetField 메서드를 찾지 못했습니다.");
                    return;
                }

                if (setFieldValueMethod == null)
                {
                    Debug.LogError("[DrogBTRebuild] SetField<T> 제네릭 메서드를 찾지 못했습니다.");
                    return;
                }

                // 기존 에셋의 서브에셋(BehaviorGraph 등)에서 깨진 managed references 클리어
                Type behaviorGraphType = typeof(Unity.Behavior.BehaviorGraph);
                UnityEngine.Object[] subAssets = AssetDatabase.LoadAllAssetsAtPath(GraphAssetPath);
                foreach (var subAsset in subAssets)
                {
                    if (subAsset != null && subAsset.GetType() == behaviorGraphType)
                    {
                        UnityEditor.SerializationUtility.ClearAllManagedReferencesWithMissingTypes(subAsset);
                        EditorUtility.SetDirty(subAsset);
                    }
                }

                // AuthoringGraph 자체에서도 깨진 references 클리어
                UnityEditor.SerializationUtility.ClearAllManagedReferencesWithMissingTypes(graphAsset);

                // 노드 클리어 — 전체 타입 계층에서 필드 찾기
                FieldInfo nodesField = FindFieldInHierarchy(authoringGraphType, "m_RootNodes");
                if (nodesField == null)
                {
                    Debug.LogError("[DrogBTRebuild] m_RootNodes 필드를 타입 계층 전체에서 찾지 못했습니다.");
                    return;
                }

                nodesField.SetValue(graphAsset, Activator.CreateInstance(nodesField.FieldType));

                FieldInfo nodesListField = FindFieldInHierarchy(authoringGraphType, "m_Nodes");
                if (nodesListField != null)
                    nodesListField.SetValue(graphAsset, Activator.CreateInstance(nodesListField.FieldType));

                FieldInfo nodeModelsInfoField = FindFieldInHierarchy(authoringGraphType, "m_NodeModelsInfo");
                if (nodeModelsInfoField != null)
                    nodeModelsInfoField.SetValue(graphAsset, Activator.CreateInstance(nodeModelsInfoField.FieldType));

                FieldInfo runtimeGraphField = FindFieldInHierarchy(authoringGraphType, "m_RuntimeGraph");
                if (runtimeGraphField != null)
                    runtimeGraphField.SetValue(graphAsset, null);

                // 클리어 후 에셋을 저장하고 다시 로드하여 잔류 참조가 메모리에 남지 않게 합니다.
                EditorUtility.SetDirty(graphAsset);
                AssetDatabase.SaveAssets();
                AssetDatabase.Refresh();

                // 에셋을 다시 로드 (직렬화된 상태에서 로드하여 클리어 상태 확보)
                graphAsset = AssetDatabase.LoadMainAssetAtPath(GraphAssetPath);
                if (graphAsset == null)
                {
                    Debug.LogError("[DrogBTRebuild] 에셋 재로드 실패.");
                    return;
                }
                authoringGraphType = graphAsset.GetType();

                object targetVariable = FindBlackboardVariableModel("Target");
                if (targetVariable == null)
                {
                    Debug.LogError("[DrogBTRebuild] Target 블랙보드 변수를 찾지 못했습니다.");
                    return;
                }

                // 구조 노드
                object startNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, runtimeAssembly.GetType("Unity.Behavior.Start", true), new Vector2(420f, -800f));
                object repeatNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, runtimeAssembly.GetType("Unity.Behavior.RepeaterModifier", true), new Vector2(420f, -620f));

                // ── 프리팹에서 패턴 에셋 로드 ──
                const string prefabPath = "Assets/_Game/Prefabs/Bosses/Prefab_Boss_Drog.prefab";
                GameObject prefab = AssetDatabase.LoadMainAssetAtPath(prefabPath) as GameObject;
                BossCombatBehaviorContext context = prefab?.GetComponent<BossCombatBehaviorContext>();
                if (context == null)
                {
                    Debug.LogError("[DrogBTRebuild] 드로그 프리팹에서 BossCombatBehaviorContext를 찾지 못했습니다.");
                    return;
                }

                // protected 필드에서 BossPatternData 에셋 읽기 (리플렉션)
                BossPatternData punishPattern = ReadProtectedField<BossPatternData>(context, "punishPattern");
                BossPatternData signaturePattern = ReadProtectedField<BossPatternData>(context, "signaturePattern");
                BossPatternData mobilityPattern = ReadProtectedField<BossPatternData>(context, "mobilityPattern");
                BossPatternData comboPattern = ReadProtectedField<BossPatternData>(context, "comboPattern");
                BossPatternData primaryPattern = ReadProtectedField<BossPatternData>(context, "primaryPattern");
                BossPatternData utilityPattern = ReadProtectedField<BossPatternData>(context, "utilityPattern");
                float punishSearchRadius = ReadProtectedFieldValue<float>(context, "punishSearchRadius", 6f);

                // 필수 패턴 검증 (combo는 선택 — 할당되지 않은 경우 해당 Branch만 생략)
                if (punishPattern == null || signaturePattern == null || mobilityPattern == null ||
                    primaryPattern == null || utilityPattern == null)
                {
                    Debug.LogError("[DrogBTRebuild] 프리팹에서 필수 패턴 에셋을 읽지 못했습니다.");
                    return;
                }

                if (comboPattern == null)
                    Debug.LogWarning("[DrogBTRebuild] comboPattern이 할당되지 않았습니다. 해당 Branch를 생략합니다.");

                // ── 계단식 우선순위 체인 ──
                // 설계안 우선순위: 다운 추가타 > 도약 > 집행 개시 > 기본 루프 > 조합 > 유틸리티
                // 각 Branch: CheckPatternReady → true → UsePatternByRole
                // false → 다음 우선순위 Branch 시도
                // 마지막까지 모든 조건이 false이면 Chase (fallback)
                //
                // 연결 흐름: Branch.True → FloatingPort(True).InputPort → FloatingPort(True).OutputPort → Action.InputPort
                // CreateNodePortsForNode를 호출하여 FloatingPortNodeModel을 자동 생성해야 합니다.
                //
                // 레이아웃 패턴 (사용자 조정 기준):
                //   Branch:          (-800, y)
                //   True Floating:  (-597, y + 110)
                //   False Floating: (-1011, y + 114)
                //   Action:          (-598, y + 199)

                const float branchX = -800f;
                const float truePortOffsetX = 203f;
                const float truePortOffsetY = 120f;
                const float falsePortOffsetX = -211f;
                const float falsePortOffsetY = 124f;
                const float actionOffsetX = 202f;
                const float actionOffsetY = 219f;
                const float startY = -800f;
                const float stepY = 320f;

                // #1 Punish — 다운 추가타 (전제 조건: 다운된 대상이 반경 이내에 있어야 함)
                object downBranch = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, branchCompositeType, new Vector2(branchX, startY));
                AttachPatternReadyCondition(downBranch, punishPattern, authoringAssembly);
                AttachConditionWithValue(downBranch, typeof(IsDownedTargetInRangeCondition), "searchRadius", punishSearchRadius, authoringAssembly);
                AttachPhaseConditionIfNeeded(downBranch, punishPattern, authoringAssembly);
                SetBranchRequiresAll(downBranch, true);
                object downUseNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, typeof(UsePatternByRoleAction), new Vector2(branchX + actionOffsetX, startY + actionOffsetY));
                SetNodeFieldValue(downUseNode, "Pattern", punishPattern, setFieldValueMethod);
                LinkTarget(downUseNode, targetVariable);

                // #2 Mobility — 도약 (전제 조건: 지나치게 먼 대상이 존재해야 함)
                float mobilityTriggerDistance = ReadProtectedFieldValue<float>(context, "mobilityTriggerDistance", 8f);
                object leapBranch = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, branchCompositeType, new Vector2(branchX, startY + stepY));
                AttachPatternReadyCondition(leapBranch, mobilityPattern, authoringAssembly);
                AttachConditionWithValue(leapBranch, typeof(IsTargetBeyondDistanceCondition), "minDistance", mobilityTriggerDistance, authoringAssembly);
                AttachPhaseConditionIfNeeded(leapBranch, mobilityPattern, authoringAssembly);
                SetBranchRequiresAll(leapBranch, true);
                object leapUseNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, typeof(UsePatternByRoleAction), new Vector2(branchX + actionOffsetX, startY + stepY + actionOffsetY));
                SetNodeFieldValue(leapUseNode, "Pattern", mobilityPattern, setFieldValueMethod);
                LinkTarget(leapUseNode, targetVariable);

                // #3 Signature — 집행 개시 (Sequence: 패턴 실행 → 결과 분기)
                // signatureBranch.True → Sequence:
                //   Child 1: 집행개시 패턴 실행 (ChargeWait 포함)
                //   Child 2: Branch(패턴 성공? = 차단 안 됨) → 범위 효과 또는 보스 경직
                // 패턴이 Failure 반환(차단 성공) → Sequence Failure → signatureBranch False → 다음 우선순위
                object signatureBranch = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, branchCompositeType, new Vector2(branchX, startY + stepY * 2));
                AttachPatternReadyCondition(signatureBranch, signaturePattern, authoringAssembly);
                AttachPhaseConditionIfNeeded(signatureBranch, signaturePattern, authoringAssembly);
                SetBranchRequiresAll(signatureBranch, true);

                // Sequence: 패턴 실행 → 결과 분기
                object signatureSequence = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod,
                    runtimeAssembly.GetType("Unity.Behavior.SequenceComposite", true),
                    new Vector2(branchX + 220f, startY + stepY * 2));

                // Child 1: 집행개시 패턴 실행
                object signatureUseNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, typeof(UsePatternByRoleAction), new Vector2(branchX + 400f, startY + stepY * 2));
                SetNodeFieldValue(signatureUseNode, "Pattern", signaturePattern, setFieldValueMethod);
                LinkTarget(signatureUseNode, targetVariable);

                // Child 2: 패턴 완료 시 결과 분기
                // 패턴이 Success 반환(차단 안 됨 = 충전 완료) → True → 실패 효과 적용
                // 패턴이 Failure 반환(차단 성공) → False → 보스 경직
                object outcomeBranch = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, branchCompositeType, new Vector2(branchX + 220f, startY + stepY * 2 + 180f));

                object failureEffectsNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, typeof(SignatureFailureEffectsAction), new Vector2(branchX + 400f, startY + stepY * 2 + 180f));
                object staggerNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, typeof(BossStaggerAction), new Vector2(branchX + 400f, startY + stepY * 2 + 360f));

                // outcomeBranch True → 실패 효과 (충전 완료 = 플레이어들이 차단 실패)
                ConnectBranch(graphAsset, connectEdgeMethod, outcomeBranch, "True", failureEffectsNode);
                // outcomeBranch False → 보스 경직 (차단 성공)
                ConnectBranch(graphAsset, connectEdgeMethod, outcomeBranch, "False", staggerNode);

                // Sequence에 자식 연결
                ConnectChildren(graphAsset, connectEdgeMethod, signatureSequence, signatureUseNode, outcomeBranch);

                // 메인 체인: signatureBranch.True → Sequence
                ConnectBranch(graphAsset, connectEdgeMethod, signatureBranch, "True", signatureSequence);

                // #4 Combo — 콤보 패턴 + 조건부 도약 (Sequence)
                // comboBranch.True → Sequence:
                //   Child 1: 연타2-강타 실행
                //   Child 2: Branch(거리 초과 대상 존재) → 도약 실행
                // 거리 초과 대상이 없으면 Branch Failure → Sequence Failure → comboBranch Failure → primaryBranch로 연결
                object comboBranch = null;
                object comboUseNode = null;
                if (comboPattern != null)
                {
                    // 메인 체인용 Branch (콤보 준비 + 페이즈 조건)
                    comboBranch = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, branchCompositeType, new Vector2(branchX, startY + stepY * 3));
                    AttachPatternReadyCondition(comboBranch, comboPattern, authoringAssembly);
                    AttachPhaseConditionIfNeeded(comboBranch, comboPattern, authoringAssembly);
                    SetBranchRequiresAll(comboBranch, true);

                    // Sequence: 콤보 실행 → 조건부 도약
                    object comboSequence = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod,
                        runtimeAssembly.GetType("Unity.Behavior.SequenceComposite", true),
                        new Vector2(branchX + 220f, startY + stepY * 3));

                    // Child 1: 콤보 패턴 실행 (연타2-강타 + 대기)
                    comboUseNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, typeof(UsePatternByRoleAction), new Vector2(branchX + 400f, startY + stepY * 3));
                    SetNodeFieldValue(comboUseNode, "Pattern", comboPattern, setFieldValueMethod);
                    LinkTarget(comboUseNode, targetVariable);

                    // Child 2: 조건부 도약 (거리 초과 대상 있을 때만)
                    object comboLeapBranch = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, branchCompositeType, new Vector2(branchX + 220f, startY + stepY * 3 + 180f));
                    AttachConditionWithValue(comboLeapBranch, typeof(IsTargetBeyondDistanceCondition), "minDistance", mobilityTriggerDistance, authoringAssembly);
                    object comboLeapUseNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, typeof(UsePatternByRoleAction), new Vector2(branchX + 400f, startY + stepY * 3 + 180f));
                    SetNodeFieldValue(comboLeapUseNode, "Pattern", mobilityPattern, setFieldValueMethod);
                    LinkTarget(comboLeapUseNode, targetVariable);
                    ConnectBranch(graphAsset, connectEdgeMethod, comboLeapBranch, "True", comboLeapUseNode);

                    // Sequence에 자식 연결
                    ConnectChildren(graphAsset, connectEdgeMethod, comboSequence, comboUseNode, comboLeapBranch);

                    // 메인 체인: comboBranch.True → Sequence
                    ConnectBranch(graphAsset, connectEdgeMethod, comboBranch, "True", comboSequence);
                }

                // #5 Primary — 사거리 + 기본 패턴 준비 (모두 충족)
                object primaryBranch = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, branchCompositeType, new Vector2(branchX, startY + stepY * 4));
                object primaryRangeCondModel = AttachCondition(primaryBranch, typeof(IsTargetInAttackRangeCondition), authoringAssembly);
                if (primaryRangeCondModel != null) setFieldMethod.Invoke(primaryRangeCondModel, new object[] { "Target", targetVariable, typeof(GameObject) });
                AttachPatternReadyCondition(primaryBranch, primaryPattern, authoringAssembly);
                AttachPhaseConditionIfNeeded(primaryBranch, primaryPattern, authoringAssembly);
                SetBranchRequiresAll(primaryBranch, true);
                object primaryUseNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, typeof(UsePatternByRoleAction), new Vector2(branchX + actionOffsetX, startY + stepY * 4 + actionOffsetY));
                SetNodeFieldValue(primaryUseNode, "Pattern", primaryPattern, setFieldValueMethod);
                LinkTarget(primaryUseNode, targetVariable);

                // #6 Utility — 유틸리티 (전제 조건: 원거리 대상이 존재해야 함)
                float utilityTriggerDistance = ReadProtectedFieldValue<float>(context, "utilityTriggerDistance", 5f);
                object utilityBranch = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, branchCompositeType, new Vector2(branchX, startY + stepY * 5));
                AttachPatternReadyCondition(utilityBranch, utilityPattern, authoringAssembly);
                AttachConditionWithValue(utilityBranch, typeof(IsTargetBeyondDistanceCondition), "minDistance", utilityTriggerDistance, authoringAssembly);
                AttachPhaseConditionIfNeeded(utilityBranch, utilityPattern, authoringAssembly);
                SetBranchRequiresAll(utilityBranch, true);
                object utilityUseNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, typeof(UsePatternByRoleAction), new Vector2(branchX + actionOffsetX, startY + stepY * 5 + actionOffsetY));
                SetNodeFieldValue(utilityUseNode, "Pattern", utilityPattern, setFieldValueMethod);
                LinkTarget(utilityUseNode, targetVariable);

                // #7 Chase — fallback (Branch 아님, Sequence 사용)
                object chaseSequence = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, runtimeAssembly.GetType("Unity.Behavior.SequenceComposite", true), new Vector2(branchX, startY + stepY * 6));
                object chaseRefreshNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, typeof(RefreshPrimaryTargetAction), new Vector2(branchX + 160f, startY + stepY * 6 + 80f));
                object chaseHasTargetNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, typeof(ValidateTargetAction), new Vector2(branchX + 320f, startY + stepY * 6 + 80f));
                object chaseUseNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, typeof(ChaseTargetAction), new Vector2(branchX + 480f, startY + stepY * 6 + 80f));

                // ── FloatingPortNodeModel 생성 + 위치 보정 ──
                // Branch 노드의 NamedPort(True/False)에 대해 FloatingPortNodeModel을 생성합니다.
                // CreateNodePortsForNode는 기본 위치(Branch + 200px Y)를 사용하므로, 생성 후 사용자 조정 기준 위치로 이동합니다.
                var allBranches = new List<object> { downBranch, leapBranch, signatureBranch, outcomeBranch };
                if (comboBranch != null) allBranches.Add(comboBranch);
                allBranches.AddRange(new[] { primaryBranch, utilityBranch });
                foreach (object branch in allBranches)
                {
                    createNodePortsMethod?.Invoke(graphAsset, new object[] { branch });
                }

                // FloatingPortNodeModel 위치를 사용자 조정 기준으로 보정
                foreach (object branch in allBranches)
                {
                    // Branch의 현재 위치 읽기 (Position은 public 필드)
                    FieldInfo posField = branch.GetType().GetField("Position", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                    if (posField == null) continue;
                    Vector2 branchPos = (Vector2)posField.GetValue(branch);

                    // FloatingPortNodeModel에서 PortName이 "True"/"False"인 것을 찾아 위치 수정
                    SetFloatingPortPosition(graphAsset, branch, "True", branchPos.x + truePortOffsetX, branchPos.y + truePortOffsetY);
                    SetFloatingPortPosition(graphAsset, branch, "False", branchPos.x + falsePortOffsetX, branchPos.y + falsePortOffsetY);
                }

                // ── 연결 ──

                // Start → Repeater → 첫 번째 Branch
                Connect(graphAsset, connectEdgeMethod, GetDefaultOutputPort(startNode), GetDefaultInputPort(repeatNode));
                Connect(graphAsset, connectEdgeMethod, GetDefaultOutputPort(repeatNode), GetDefaultInputPort(downBranch));

                // 각 Branch의 True FloatingPort → Action (combo, signature는 내부에서 Sequence로 연결됨)
                ConnectBranch(graphAsset, connectEdgeMethod, downBranch, "True", downUseNode);
                ConnectBranch(graphAsset, connectEdgeMethod, leapBranch, "True", leapUseNode);
                // signatureBranch.True는 signatureSequence에 이미 연결됨
                ConnectBranch(graphAsset, connectEdgeMethod, primaryBranch, "True", primaryUseNode);
                ConnectBranch(graphAsset, connectEdgeMethod, utilityBranch, "True", utilityUseNode);

                // 각 Branch의 False FloatingPort → 다음 우선순위 (계단식 체인)
                // combo 유무에 따라 연결 경로가 달라짐
                object afterSignature = comboBranch ?? primaryBranch;
                ConnectBranch(graphAsset, connectEdgeMethod, downBranch, "False", leapBranch);
                ConnectBranch(graphAsset, connectEdgeMethod, leapBranch, "False", signatureBranch);
                ConnectBranch(graphAsset, connectEdgeMethod, signatureBranch, "False", afterSignature);
                if (comboBranch != null)
                    ConnectBranch(graphAsset, connectEdgeMethod, comboBranch, "False", primaryBranch);
                ConnectBranch(graphAsset, connectEdgeMethod, primaryBranch, "False", utilityBranch);
                ConnectBranch(graphAsset, connectEdgeMethod, utilityBranch, "False", chaseSequence);

                // Chase Sequence 자식 연결
                ConnectChildren(graphAsset, connectEdgeMethod, chaseSequence, chaseRefreshNode, chaseHasTargetNode, chaseUseNode);

                // Chase 노드 블랙보드 변수 연결
                LinkTarget(chaseRefreshNode, targetVariable);
                LinkTarget(chaseHasTargetNode, targetVariable);
                LinkTarget(chaseUseNode, targetVariable);

                // 저장
                SetStartRepeatFlags(startNode, repeat: true, allowMultipleRepeatsPerTick: false);
                setAssetDirtyMethod.Invoke(graphAsset, new object[] { true });
                AssetDatabase.SaveAssets();

                // BuildRuntimeGraph는 에셋이 직렬화된 후 AssetDatabase.ImportAsset으로 재임포트하여
                // OnValidate/AssetPostprocessor에서 자동 빌드되게 합니다.
                string assetPath = AssetDatabase.GetAssetPath(graphAsset);
                AssetDatabase.ImportAsset(assetPath, ImportAssetOptions.ForceUpdate);

                saveAssetMethod.Invoke(graphAsset, null);
                AssetDatabase.SaveAssets();

                Debug.Log("[DrogBTRebuild] 드로그 Behavior Graph authoring 자산 재구성이 완료되었습니다.");
            }
            catch (Exception exception)
            {
                Debug.LogException(exception);
            }
        }

        /// <summary>
        /// ConditionalGuardAction 노드를 생성하고 지정된 Condition을 부착합니다.
        /// </summary>
        private static object CreateConditionalGuard(
            UnityEngine.Object graphAsset,
            MethodInfo createNodeMethod,
            MethodInfo getNodeInfoMethod,
            Type conditionalGuardType,
            Type conditionType,
            Vector2 position,
            Assembly authoringAssembly)
        {
            object guardNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, conditionalGuardType, position);
            AttachCondition(guardNode, conditionType, authoringAssembly);
            return guardNode;
        }

        /// <summary>
        /// ConditionalGuardAction 노드를 생성하고, 블랙보드 변수 참조가 있는 Condition을 부착합니다.
        /// </summary>
        private static object CreateConditionalGuardWithField(
            UnityEngine.Object graphAsset,
            MethodInfo createNodeMethod,
            MethodInfo getNodeInfoMethod,
            Type conditionalGuardType,
            MethodInfo setFieldMethod,
            Type conditionType,
            object targetVariable,
            Vector2 position,
            Assembly authoringAssembly)
        {
            object guardNode = CreateNode(graphAsset, createNodeMethod, getNodeInfoMethod, conditionalGuardType, position);
            object conditionModel = AttachCondition(guardNode, conditionType, authoringAssembly);

            // Condition의 Target 필드를 블랙보드 변수에 연결
            // SetField는 GetOrCreateField를 호출하여 m_FieldValues에 FieldModel을 생성합니다.
            if (conditionModel != null && targetVariable != null)
            {
                try
                {
                    setFieldMethod.Invoke(conditionModel, new object[] { "Target", targetVariable, typeof(GameObject) });
                }
                catch (Exception ex)
                {
                    Debug.LogError($"[DrogBTRebuild] SetField 'Target' 실패 for {conditionType.Name}: {ex.GetType().Name}: {ex.Message}");
                }
            }

            return guardNode;
        }

        /// <summary>
        /// 노드에 Condition을 부착합니다.
        /// ConditionUtility.GetInfoForConditionType를 사용하여 NodeRegistry와 완벽히 동일한
        /// ConditionInfo를 획득합니다. 이렇게 하면 TypeID가 레지스트리와 일치하여
        /// EnsureFieldValuesAreUpToDate가 정상 동작하고 UpdateConditionModels가
        /// ConditionModel을 삭제하지 않습니다.
        /// </summary>
        private static object AttachCondition(object guardNode, Type conditionType, Assembly authoringAssembly)
        {
            try
            {
            // ConditionUtility.GetInfoForConditionType을 사용하여 ConditionInfo 획득
            // 이 메서드는 ConditionAttribute에서 GUID를 읽고, Variables를 리플렉션으로 수집합니다.
            Type conditionUtilityType = authoringAssembly.GetType("Unity.Behavior.ConditionUtility");
            MethodInfo getInfoForTypeMethod = conditionUtilityType?.GetMethod("GetInfoForConditionType", BindingFlags.Static | BindingFlags.NonPublic);

            if (getInfoForTypeMethod == null)
            {
                Debug.LogError("[DrogBTRebuild] ConditionUtility.GetInfoForConditionType 메서드를 찾지 못했습니다.");
                return null;
            }

            object conditionInfo = getInfoForTypeMethod.Invoke(null, new object[] { conditionType });

            if (conditionInfo == null)
            {
                Debug.LogError($"[DrogBTRebuild] GetInfoForConditionType이 null을 반환: {conditionType.Name}");
                return null;
            }

            Type conditionModelType = authoringAssembly.GetType("Unity.Behavior.ConditionModel");
            Type graphNodeModelType = authoringAssembly.GetType("Unity.Behavior.BehaviorGraphNodeModel");

            if (conditionModelType == null || graphNodeModelType == null)
            {
                Debug.LogError("[DrogBTRebuild] ConditionModel/BehaviorGraphNodeModel 타입을 찾지 못했습니다.");
                return null;
            }

            // ConditionModel 생성자 가져오기 (internal)
            ConstructorInfo conditionModelCtor = conditionModelType.GetConstructor(
                BindingFlags.Instance | BindingFlags.NonPublic,
                null,
                new[] { graphNodeModelType, typeof(Unity.Behavior.Condition), conditionInfo.GetType() },
                null);

            if (conditionModelCtor == null)
            {
                Debug.LogWarning("[DrogBTRebuild] ConditionModel 생성자를 찾지 못했습니다.");
                return null;
            }

            object conditionModel = conditionModelCtor.Invoke(new object[] { guardNode, null, conditionInfo });

            // ConditionModels 리스트에 추가
            PropertyInfo conditionModelsProp = guardNode.GetType().GetProperty("ConditionModels", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            if (conditionModelsProp != null)
            {
                IList conditionModels = conditionModelsProp.GetValue(guardNode) as IList;
                conditionModels?.Add(conditionModel);
            }
            else
            {
                Debug.LogWarning("[DrogBTRebuild] ConditionModels 속성을 찾지 못했습니다.");
            }

            return conditionModel;
            }
            catch (Exception ex)
            {
                Debug.LogError($"[DrogBTRebuild] AttachCondition 실패 ({conditionType.Name}): {ex.GetType().Name}: {ex.Message}");
                return null;
            }
        }

        /// <summary>
        /// ConditionModel의 필드를 블랙보드 변수에 연결합니다.
        /// </summary>
        private static void LinkConditionFieldToVariable(object conditionModel, string fieldName, Type fieldType, object variableModel)
        {
            MethodInfo setFieldMethod = conditionModel.GetType().GetMethod("SetField", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            setFieldMethod?.Invoke(conditionModel, new object[] { fieldName, variableModel, fieldType });
        }

        /// <summary>
        /// Condition을 부착하고, 지정된 enum 필드 값을 설정합니다.
        /// CheckPatternReadyCondition처럼 필드 값으로 역할을 구분하는 Condition에 사용합니다.
        /// </summary>
        private static void AttachConditionWithValue(object guardNode, Type conditionType, string fieldName, object fieldValue, Assembly authoringAssembly)
        {
            object conditionModel = AttachCondition(guardNode, conditionType, authoringAssembly);
            if (conditionModel == null)
            {
                Debug.LogWarning($"[DrogBTRebuild] AttachConditionWithValue: Condition 생성 실패 ({conditionType.Name})");
                return;
            }

            try
            {
                // ConditionModel의 실제 타입에서 SetField<T>를 조회
                MethodInfo genericSetField = conditionModel.GetType().GetMethods(BindingFlags.Instance | BindingFlags.NonPublic)
                    .FirstOrDefault(m => m.Name == "SetField" && m.IsGenericMethod && m.GetParameters().Length == 2);

                if (genericSetField != null)
                {
                    MethodInfo closedMethod = genericSetField.MakeGenericMethod(fieldValue.GetType());
                    closedMethod.Invoke(conditionModel, new object[] { fieldName, fieldValue });
                }
                else
                {
                    Debug.LogWarning($"[DrogBTRebuild] SetField<T>를 찾지 못해 '{fieldName}' 필드를 설정하지 못했습니다.");
                }
            }
            catch (Exception ex)
            {
                Debug.LogError($"[DrogBTRebuild] AttachConditionWithValue 실패 ({conditionType.Name}.{fieldName}): {ex.GetType().Name}: {ex.Message}");
            }
        }

        /// <summary>
        /// 노드 모델의 지정된 enum 필드 값을 설정합니다.
        /// UsePatternByRoleAction처럼 필드 값으로 역할을 구분하는 Action에 사용합니다.
        /// </summary>
        private static void SetNodeFieldValue(object nodeModel, string fieldName, object fieldValue, MethodInfo setFieldValueMethod)
        {
            if (setFieldValueMethod == null)
            {
                Debug.LogWarning("[DrogBTRebuild] SetNodeFieldValue: setFieldValueMethod이 null입니다.");
                return;
            }

            try
            {
                // 실제 노드 모델 타입에서 SetField<T>를 직접 조회하여 타입 불일치 방지
                MethodInfo genericMethod = nodeModel.GetType().GetMethods(BindingFlags.Instance | BindingFlags.NonPublic)
                    .FirstOrDefault(m => m.Name == "SetField" && m.IsGenericMethod && m.GetParameters().Length == 2);

                if (genericMethod == null)
                {
                    Debug.LogWarning($"[DrogBTRebuild] SetNodeFieldValue: SetField<T>를 {nodeModel.GetType().Name}에서 찾지 못했습니다.");
                    return;
                }

                MethodInfo closedMethod = genericMethod.MakeGenericMethod(fieldValue.GetType());
                closedMethod.Invoke(nodeModel, new object[] { fieldName, fieldValue });
            }
            catch (Exception ex)
            {
                Debug.LogError($"[DrogBTRebuild] SetNodeFieldValue 실패 ({nodeModel.GetType().Name}.{fieldName}): {ex.GetType().Name}: {ex.Message}");
            }
        }

        private static object CreateNode(UnityEngine.Object graphAsset, MethodInfo createNodeMethod, MethodInfo getNodeInfoMethod, Type runtimeType, Vector2 position)
        {
            if (runtimeType == null)
                throw new InvalidOperationException("[DrogBTRebuild] 런타임 타입이 null입니다.");

            object nodeInfo = getNodeInfoMethod.Invoke(null, new object[] { runtimeType });
            if (nodeInfo == null)
                throw new InvalidOperationException($"[DrogBTRebuild] NodeInfo를 찾지 못했습니다: {runtimeType.FullName}");

            Type nodeInfoType = nodeInfo.GetType();
            FieldInfo modelTypeField = nodeInfoType.GetField("ModelType", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            object serializableType = modelTypeField?.GetValue(nodeInfo);
            PropertyInfo serializableTypeValueProperty = serializableType?.GetType().GetProperty("Type", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            Type modelType = serializableTypeValueProperty?.GetValue(serializableType) as Type;
            if (modelType == null)
                throw new InvalidOperationException($"[DrogBTRebuild] ModelType을 찾지 못했습니다: {runtimeType.FullName}");

            return createNodeMethod.Invoke(graphAsset, new object[] { modelType, position, null, new object[] { nodeInfo } });
        }

        private static void ConnectChildren(UnityEngine.Object graphAsset, MethodInfo connectEdgeMethod, object parentNode, params object[] children)
        {
            object outputPort = GetDefaultOutputPort(parentNode);
            for (int i = 0; i < children.Length; i++)
            {
                Connect(graphAsset, connectEdgeMethod, outputPort, GetDefaultInputPort(children[i]));
            }
        }

        private static void Connect(UnityEngine.Object graphAsset, MethodInfo connectEdgeMethod, object outputPort, object inputPort)
        {
            if (outputPort == null || inputPort == null)
                throw new InvalidOperationException("[DrogBTRebuild] 포트 연결 대상이 null입니다.");

            connectEdgeMethod.Invoke(graphAsset, new[] { outputPort, inputPort });
        }

        private static object GetDefaultInputPort(object node)
        {
            return GetDefaultPort(node, "TryDefaultInputPortModel");
        }

        private static object GetDefaultOutputPort(object node)
        {
            return GetDefaultPort(node, "TryDefaultOutputPortModel");
        }

        private static object GetDefaultPort(object node, string methodName)
        {
            MethodInfo method = node.GetType().GetMethod(methodName, BindingFlags.Instance | BindingFlags.Public);
            object[] parameters = { null };
            bool success = method != null && (bool)method.Invoke(node, parameters);
            return success ? parameters[0] : null;
        }

        private static object FindBlackboardVariableModel(string variableName)
        {
            UnityEngine.Object blackboardAsset = AssetDatabase.LoadAllAssetsAtPath(GraphAssetPath)
                .FirstOrDefault(asset => asset != null && asset.GetType().Name.Contains("BehaviorBlackboardAuthoringAsset", StringComparison.Ordinal));

            if (blackboardAsset == null)
                return null;

            PropertyInfo variablesProperty = blackboardAsset.GetType().GetProperty("Variables", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            FieldInfo variablesField = blackboardAsset.GetType().GetField("m_Variables", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            IEnumerable variables = variablesProperty?.GetValue(blackboardAsset) as IEnumerable ?? variablesField?.GetValue(blackboardAsset) as IEnumerable;
            if (variables == null)
                return null;

            foreach (object variable in variables)
            {
                if (variable == null)
                    continue;

                PropertyInfo nameProperty = variable.GetType().GetProperty("Name", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                FieldInfo nameField = variable.GetType().GetField("Name", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                string name = nameProperty?.GetValue(variable) as string ?? nameField?.GetValue(variable) as string;
                if (name == variableName)
                    return variable;
            }

            return null;
        }

        private static void LinkTarget(object node, object targetVariable)
        {
            LinkFieldToVariable(node, "Target", typeof(GameObject), targetVariable);
        }

        private static void LinkFieldToVariable(object node, string fieldName, Type fieldType, object variableModel)
        {
            MethodInfo getVariableLinkMethod = node.GetType().GetMethod("GetVariableLink", BindingFlags.Instance | BindingFlags.Public);
            object variableLink = getVariableLinkMethod?.Invoke(node, new object[] { fieldName, fieldType });
            if (variableLink != null)
            {
                PropertyInfo blackboardVariableProperty = variableLink.GetType().GetProperty("BlackboardVariable", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                blackboardVariableProperty?.SetValue(variableLink, variableModel);
            }

            object fieldModel = FindFieldModel(node, fieldName);
            if (fieldModel == null)
                return;

            PropertyInfo linkedVariableProperty = fieldModel.GetType().GetProperty("LinkedVariable", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            FieldInfo linkedVariableField = fieldModel.GetType().GetField("LinkedVariable", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);

            if (linkedVariableProperty != null && linkedVariableProperty.CanWrite)
            {
                linkedVariableProperty.SetValue(fieldModel, variableModel);
            }
            else
            {
                linkedVariableField?.SetValue(fieldModel, variableModel);
            }
        }

        private static object FindFieldModel(object node, string fieldName)
        {
            FieldInfo fieldValuesField = node.GetType().GetField("m_FieldValues", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            PropertyInfo fieldValuesProperty = node.GetType().GetProperty("FieldValues", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);

            IEnumerable fieldValues = fieldValuesField?.GetValue(node) as IEnumerable ?? fieldValuesProperty?.GetValue(node) as IEnumerable;
            if (fieldValues == null)
                return null;

            foreach (object fieldModel in fieldValues)
            {
                if (fieldModel == null)
                    continue;

                PropertyInfo fieldNameProperty = fieldModel.GetType().GetProperty("FieldName", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                FieldInfo fieldNameField = fieldModel.GetType().GetField("FieldName", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                string currentFieldName = fieldNameProperty?.GetValue(fieldModel) as string ?? fieldNameField?.GetValue(fieldModel) as string;
                if (currentFieldName == fieldName)
                    return fieldModel;
            }

            return null;
        }

        private static void SetStartRepeatFlags(object startNode, bool repeat, bool allowMultipleRepeatsPerTick)
        {
            Type startNodeType = startNode.GetType();
            FieldInfo repeatField = startNodeType.GetField("Repeat", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            FieldInfo allowField = startNodeType.GetField("AllowMultipleRepeatsPerTick", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);

            repeatField?.SetValue(startNode, repeat);
            allowField?.SetValue(startNode, allowMultipleRepeatsPerTick);
        }

        /// <summary>
        /// GetField()가 null을 반환하는 문제를 회피하기 위해 전체 타입 계층을 순회하며 필드를 검색합니다.
        /// </summary>
        private static FieldInfo FindFieldInHierarchy(Type type, string fieldName)
        {
            Type current = type;
            while (current != null)
            {
                foreach (FieldInfo fi in current.GetFields(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic))
                {
                    if (fi.Name == fieldName)
                        return fi;
                }
                current = current.BaseType;
            }
            return null;
        }

        /// <summary>
        /// Branch 노드의 지정된 이름의 출력 포트(PortModel)를 반환합니다.
        /// BranchingConditionComposite는 NamedChildren(True, False)을 가지므로
        /// 기본 출력 포트 대신 이름 기반 포트를 사용해야 합니다.
        /// </summary>
        private static object GetNamedOutputPort(object node, string portName)
        {
            MethodInfo method = node.GetType().GetMethod("FindPortModelByName", BindingFlags.Instance | BindingFlags.Public);
            if (method == null)
                throw new InvalidOperationException("[DrogBTRebuild] FindPortModelByName 메서드를 찾지 못했습니다.");
            object port = method.Invoke(node, new object[] { portName });
            if (port == null)
                throw new InvalidOperationException($"[DrogBTRebuild] '{portName}' 포트를 찾지 못했습니다.");
            return port;
        }

        /// <summary>
        /// Branch의 NamedPort(True/False)를 FloatingPortNodeModel을 경유하여 대상 노드에 연결합니다.
        /// 올바른 연결 흐름: Branch.NamedPort → FloatingPort.InputPort → FloatingPort.OutputPort → Target.InputPort
        /// </summary>
        private static void ConnectBranch(UnityEngine.Object graphAsset, MethodInfo connectEdgeMethod, object branchNode, string portName, object targetNode)
        {
            // Branch의 NamedPort 찾기
            object branchPort = GetNamedOutputPort(branchNode, portName);

            // FloatingPortNodeModel 찾기 — Branch의 포트에 연결된 FloatingPortNodeModel을 검색
            // FloatingPortNodeModel은 GraphAsset.Nodes에 별도 노드로 저장됩니다.
            FieldInfo nodesField = FindFieldInHierarchy(graphAsset.GetType(), "m_Nodes");
            if (nodesField == null)
            {
                // 폴백: 직접 연결 (FloatingPort가 없는 경우)
                Connect(graphAsset, connectEdgeMethod, branchPort, GetDefaultInputPort(targetNode));
                return;
            }

            IEnumerable nodes = nodesField.GetValue(graphAsset) as IEnumerable;
            if (nodes == null)
            {
                Connect(graphAsset, connectEdgeMethod, branchPort, GetDefaultInputPort(targetNode));
                return;
            }

            object floatingPortOutput = null;

            foreach (object node in nodes)
            {
                if (node == null) continue;
                Type nodeType = node.GetType();
                if (!nodeType.Name.Contains("FloatingPortNodeModel")) continue;

                // PortName 확인
                FieldInfo portNameField = nodeType.GetField("PortName", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                string currentPortName = portNameField?.GetValue(node) as string;
                if (currentPortName != portName) continue;

                // ParentNodeID 확인 — 이 Branch의 자식인지
                FieldInfo parentNodeIdField = nodeType.GetField("ParentNodeID", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                if (parentNodeIdField == null) continue;

                object parentNodeIdValue = parentNodeIdField.GetValue(node);
                // Branch의 ID와 비교
                FieldInfo branchIdField = branchNode.GetType().GetField("ID", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                if (branchIdField == null) continue;
                object branchIdValue = branchIdField.GetValue(branchNode);

                if (!parentNodeIdValue.Equals(branchIdValue)) continue;

                // FloatingPort의 OutputPort 찾기
                PropertyInfo portModelsProp = nodeType.GetProperty("PortModels", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                FieldInfo portModelsField = nodeType.GetField("PortModels", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                IEnumerable portModels = portModelsProp?.GetValue(node) as IEnumerable ?? portModelsField?.GetValue(node) as IEnumerable;
                if (portModels == null) continue;

                foreach (object port in portModels)
                {
                    if (port == null) continue;
                    FieldInfo portNameF = port.GetType().GetField("m_Name", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                    string pName = portNameF?.GetValue(port) as string;
                    if (pName == "OutputPort")
                    {
                        floatingPortOutput = port;
                        break;
                    }
                }

                if (floatingPortOutput != null) break;
            }

            if (floatingPortOutput != null)
            {
                Connect(graphAsset, connectEdgeMethod, floatingPortOutput, GetDefaultInputPort(targetNode));
            }
            else
            {
                // 폴백: 직접 연결
                Connect(graphAsset, connectEdgeMethod, branchPort, GetDefaultInputPort(targetNode));
                Debug.LogWarning($"[DrogBTRebuild] FloatingPortNodeModel을 찾지 못해 '{portName}' 포트를 직접 연결합니다.");
            }
        }

        /// <summary>
        /// Branch 노드의 RequiresAllConditionsTrue 플래그를 설정합니다.
        /// DefaultNodeTransformer가 model.RequiresAllConditionsTrue → runtime.RequiresAllConditions로 복사합니다.
        /// </summary>
        private static void SetBranchRequiresAll(object branchNode, bool requiresAll)
        {
            PropertyInfo prop = branchNode.GetType().GetProperty("RequiresAllConditionsTrue", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            prop?.SetValue(branchNode, requiresAll);
        }

        /// <summary>
        /// Branch에 속한 FloatingPortNodeModel의 위치를 설정합니다.
        /// Branch의 ID와 PortName으로 FloatingPortNodeModel을 찾아 Position을 변경합니다.
        /// </summary>
        private static void SetFloatingPortPosition(UnityEngine.Object graphAsset, object branchNode, string portName, float x, float y)
        {
            // m_Nodes 또는 Nodes에서 FloatingPortNodeModel을 검색
            IEnumerable nodes = null;
            FieldInfo nodesField = FindFieldInHierarchy(graphAsset.GetType(), "m_Nodes");
            if (nodesField != null)
                nodes = nodesField.GetValue(graphAsset) as IEnumerable;
            if (nodes == null)
            {
                PropertyInfo nodesProp = graphAsset.GetType().GetProperty("Nodes", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                if (nodesProp != null)
                    nodes = nodesProp.GetValue(graphAsset) as IEnumerable;
            }

            if (nodes == null)
            {
                Debug.LogWarning("[DrogBTRebuild] SetFloatingPortPosition: Nodes 컬렉션을 찾지 못했습니다.");
                return;
            }

            // Branch의 ID 가져오기
            FieldInfo branchIdField = branchNode.GetType().GetField("ID", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
            if (branchIdField == null)
            {
                Debug.LogWarning("[DrogBTRebuild] SetFloatingPortPosition: ID 필드를 찾지 못했습니다.");
                return;
            }
            object branchIdValue = branchIdField.GetValue(branchNode);

            foreach (object node in nodes)
            {
                if (node == null) continue;
                Type nodeType = node.GetType();
                if (!nodeType.Name.Contains("FloatingPortNodeModel")) continue;

                FieldInfo portNameField = nodeType.GetField("PortName", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                string currentPortName = portNameField?.GetValue(node) as string;
                if (currentPortName != portName) continue;

                FieldInfo parentNodeIdField = nodeType.GetField("ParentNodeID", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                if (parentNodeIdField == null) continue;
                object parentNodeIdValue = parentNodeIdField.GetValue(node);

                bool match = parentNodeIdValue != null && parentNodeIdValue.Equals(branchIdValue);
                if (!match) continue;

                // Position 설정 (Position은 public 필드)
                FieldInfo posField = nodeType.GetField("Position", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
                posField?.SetValue(node, new Vector2(x, y));
                return;
            }
        }

        /// <summary>
        /// 컴포넌트의 protected 필드 값을 읽습니다 (참조 타입용).
        /// 프리팹에서 BossPatternData 에셋을 로드할 때 사용합니다.
        /// </summary>
        private static T ReadProtectedField<T>(object obj, string fieldName) where T : class
        {
            Type type = obj.GetType();
            while (type != null)
            {
                FieldInfo field = type.GetField(fieldName, BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
                if (field != null)
                    return field.GetValue(obj) as T;
                type = type.BaseType;
            }
            Debug.LogError($"[DrogBTRebuild] '{fieldName}' 필드를 {obj.GetType().Name}에서 찾지 못했습니다.");
            return null;
        }

        /// <summary>
        /// 컴포넌트의 protected 필드 값을 읽습니다 (값 타입용).
        /// </summary>
        private static T ReadProtectedFieldValue<T>(object obj, string fieldName, T defaultValue) where T : struct
        {
            Type type = obj.GetType();
            while (type != null)
            {
                FieldInfo field = type.GetField(fieldName, BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
                if (field != null)
                    return (T)field.GetValue(obj);
                type = type.BaseType;
            }
            return defaultValue;
        }

        /// <summary>
        /// Branch에 CheckPatternReadyCondition을 부착하고 BossPatternData 에셋을 설정합니다.
        /// 노드에 패턴명이 표시됩니다 (story의 [Pattern] 치환).
        /// </summary>
        private static void AttachPatternReadyCondition(object branchNode, BossPatternData pattern, Assembly authoringAssembly)
        {
            object condModel = AttachCondition(branchNode, typeof(CheckPatternReadyCondition), authoringAssembly);
            if (condModel == null)
            {
                Debug.LogError($"[DrogBTRebuild] CheckPatternReadyCondition 부착 실패: {pattern?.PatternName}");
                return;
            }

            // ConditionModel의 실제 타입에서 SetField<T>를 조회하여 BossPatternData 참조 설정
            MethodInfo genericSetField = condModel.GetType().GetMethods(BindingFlags.Instance | BindingFlags.NonPublic)
                .FirstOrDefault(m => m.Name == "SetField" && m.IsGenericMethod && m.GetParameters().Length == 2);
            if (genericSetField != null)
            {
                MethodInfo closedMethod = genericSetField.MakeGenericMethod(typeof(BossPatternData));
                closedMethod.Invoke(condModel, new object[] { "Pattern", pattern });
            }
            else
            {
                Debug.LogError("[DrogBTRebuild] CheckPatternReadyCondition에서 SetField<T>를 찾지 못했습니다.");
            }
        }

        /// <summary>
        /// 패턴의 MinPhase가 1보다 큰 경우, Branch에 IsMinPhaseSatisfiedCondition을 부착합니다.
        /// Phase 진입 조건을 BT에서 시각적으로 확인할 수 있습니다.
        /// </summary>
        private static void AttachPhaseConditionIfNeeded(object branchNode, BossPatternData pattern, Assembly authoringAssembly)
        {
            if (pattern == null || pattern.MinPhase <= 1)
                return;

            AttachConditionWithValue(branchNode, typeof(IsMinPhaseSatisfiedCondition), "MinPhase", pattern.MinPhase, authoringAssembly);
        }
    }
}