using UnityEngine;
using UnityEditor;
using UnityEngine.Animations.Rigging;
using System.Collections.Generic;
using System.Linq;

namespace EditorTools
{
    public static class BoneRendererContextMenu
    {
        [MenuItem("CONTEXT/BoneRenderer/휴머노이드 본 자동 추가")]
        private static void AddHumanoidBones(MenuCommand command)
        {
            BoneRenderer boneRenderer = command.context as BoneRenderer;
            if (boneRenderer == null) return;

            Animator animator = boneRenderer.GetComponent<Animator>();
            if (animator == null || !animator.isHuman)
            {
                EditorUtility.DisplayDialog("오류", "휴머노이드 Animator가 필요합니다.", "확인");
                return;
            }

            Undo.RecordObject(boneRenderer, "Add Humanoid Bones");
            
            List<Transform> humanoidBones = GetAvailableHumanoidBones(animator);
            boneRenderer.transforms = humanoidBones.ToArray();
            
            EditorUtility.SetDirty(boneRenderer);
            Debug.Log($"{humanoidBones.Count}개의 휴머노이드 본이 BoneRenderer에 추가되었습니다.");
        }

        [MenuItem("CONTEXT/BoneRenderer/본 목록 초기화")]
        private static void ClearBones(MenuCommand command)
        {
            BoneRenderer boneRenderer = command.context as BoneRenderer;
            if (boneRenderer == null) return;

            if (!EditorUtility.DisplayDialog("확인", "본 목록을 초기화하시겠습니까?", "예", "아니오"))
                return;

            Undo.RecordObject(boneRenderer, "Clear Bones");
            
            boneRenderer.transforms = new Transform[0];
            
            EditorUtility.SetDirty(boneRenderer);
            Debug.Log("BoneRenderer의 본 목록이 초기화되었습니다.");
        }

        private static readonly HumanBodyBones[] HumanoidBoneTypes = new HumanBodyBones[]
        {
            HumanBodyBones.Hips, HumanBodyBones.Spine, HumanBodyBones.Chest, HumanBodyBones.UpperChest,
            HumanBodyBones.Neck, HumanBodyBones.Head,
            HumanBodyBones.LeftShoulder, HumanBodyBones.LeftUpperArm, HumanBodyBones.LeftLowerArm, HumanBodyBones.LeftHand,
            HumanBodyBones.LeftThumbProximal, HumanBodyBones.LeftThumbIntermediate, HumanBodyBones.LeftThumbDistal,
            HumanBodyBones.LeftIndexProximal, HumanBodyBones.LeftIndexIntermediate, HumanBodyBones.LeftIndexDistal,
            HumanBodyBones.LeftMiddleProximal, HumanBodyBones.LeftMiddleIntermediate, HumanBodyBones.LeftMiddleDistal,
            HumanBodyBones.LeftRingProximal, HumanBodyBones.LeftRingIntermediate, HumanBodyBones.LeftRingDistal,
            HumanBodyBones.LeftLittleProximal, HumanBodyBones.LeftLittleIntermediate, HumanBodyBones.LeftLittleDistal,
            HumanBodyBones.RightShoulder, HumanBodyBones.RightUpperArm, HumanBodyBones.RightLowerArm, HumanBodyBones.RightHand,
            HumanBodyBones.RightThumbProximal, HumanBodyBones.RightThumbIntermediate, HumanBodyBones.RightThumbDistal,
            HumanBodyBones.RightIndexProximal, HumanBodyBones.RightIndexIntermediate, HumanBodyBones.RightIndexDistal,
            HumanBodyBones.RightMiddleProximal, HumanBodyBones.RightMiddleIntermediate, HumanBodyBones.RightMiddleDistal,
            HumanBodyBones.RightRingProximal, HumanBodyBones.RightRingIntermediate, HumanBodyBones.RightRingDistal,
            HumanBodyBones.RightLittleProximal, HumanBodyBones.RightLittleIntermediate, HumanBodyBones.RightLittleDistal,
            HumanBodyBones.LeftUpperLeg, HumanBodyBones.LeftLowerLeg, HumanBodyBones.LeftFoot, HumanBodyBones.LeftToes,
            HumanBodyBones.RightUpperLeg, HumanBodyBones.RightLowerLeg, HumanBodyBones.RightFoot, HumanBodyBones.RightToes
        };

        private static List<Transform> GetAvailableHumanoidBones(Animator animator)
        {
            List<Transform> humanoidBones = new List<Transform>();
            
            foreach (HumanBodyBones boneType in HumanoidBoneTypes)
            {
                Transform bone = animator.GetBoneTransform(boneType);
                if (bone != null)
                {
                    humanoidBones.Add(bone);
                }
            }
            
            return humanoidBones;
        }
    }
    [CustomEditor(typeof(BoneRenderer))]
    [CanEditMultipleObjects]
    public class BoneRendererEditorExtension : Editor
    {
        static readonly GUIContent k_BoneSizeLabel = new GUIContent("Bone Size");
        static readonly GUIContent k_BoneColorLabel = new GUIContent("Color");
        static readonly GUIContent k_BoneShapeLabel = new GUIContent("Shape");
        static readonly GUIContent k_TripodSizeLabel = new GUIContent("Tripod Size");

        SerializedProperty m_DrawBones;
        SerializedProperty m_BoneShape;
        SerializedProperty m_BoneSize;
        SerializedProperty m_BoneColor;

        SerializedProperty m_DrawTripods;
        SerializedProperty m_TripodSize;

        SerializedProperty m_Transforms;

        // 휴머노이드 본 타입 정의
        private static readonly HumanBodyBones[] HumanoidBoneTypes = new HumanBodyBones[]
        {
            // 스파인 체인
            HumanBodyBones.Hips,
            HumanBodyBones.Spine,
            HumanBodyBones.Chest,
            HumanBodyBones.UpperChest,
            HumanBodyBones.Neck,
            HumanBodyBones.Head,
            
            // 왼쪽 팔
            HumanBodyBones.LeftShoulder,
            HumanBodyBones.LeftUpperArm,
            HumanBodyBones.LeftLowerArm,
            HumanBodyBones.LeftHand,
            
            // 왼쪽 손가락
            HumanBodyBones.LeftThumbProximal,
            HumanBodyBones.LeftThumbIntermediate,
            HumanBodyBones.LeftThumbDistal,
            HumanBodyBones.LeftIndexProximal,
            HumanBodyBones.LeftIndexIntermediate,
            HumanBodyBones.LeftIndexDistal,
            HumanBodyBones.LeftMiddleProximal,
            HumanBodyBones.LeftMiddleIntermediate,
            HumanBodyBones.LeftMiddleDistal,
            HumanBodyBones.LeftRingProximal,
            HumanBodyBones.LeftRingIntermediate,
            HumanBodyBones.LeftRingDistal,
            HumanBodyBones.LeftLittleProximal,
            HumanBodyBones.LeftLittleIntermediate,
            HumanBodyBones.LeftLittleDistal,
            
            // 오른쪽 팔
            HumanBodyBones.RightShoulder,
            HumanBodyBones.RightUpperArm,
            HumanBodyBones.RightLowerArm,
            HumanBodyBones.RightHand,
            
            // 오른쪽 손가락
            HumanBodyBones.RightThumbProximal,
            HumanBodyBones.RightThumbIntermediate,
            HumanBodyBones.RightThumbDistal,
            HumanBodyBones.RightIndexProximal,
            HumanBodyBones.RightIndexIntermediate,
            HumanBodyBones.RightIndexDistal,
            HumanBodyBones.RightMiddleProximal,
            HumanBodyBones.RightMiddleIntermediate,
            HumanBodyBones.RightMiddleDistal,
            HumanBodyBones.RightRingProximal,
            HumanBodyBones.RightRingIntermediate,
            HumanBodyBones.RightRingDistal,
            HumanBodyBones.RightLittleProximal,
            HumanBodyBones.RightLittleIntermediate,
            HumanBodyBones.RightLittleDistal,
            
            // 왼쪽 다리
            HumanBodyBones.LeftUpperLeg,
            HumanBodyBones.LeftLowerLeg,
            HumanBodyBones.LeftFoot,
            HumanBodyBones.LeftToes,
            
            // 오른쪽 다리
            HumanBodyBones.RightUpperLeg,
            HumanBodyBones.RightLowerLeg,
            HumanBodyBones.RightFoot,
            HumanBodyBones.RightToes
        };

        public void OnEnable()
        {
            m_DrawBones = serializedObject.FindProperty("drawBones");
            m_BoneSize = serializedObject.FindProperty("boneSize");
            m_BoneShape = serializedObject.FindProperty("boneShape");
            m_BoneColor = serializedObject.FindProperty("boneColor");

            m_DrawTripods = serializedObject.FindProperty("drawTripods");
            m_TripodSize = serializedObject.FindProperty("tripodSize");

            m_Transforms = serializedObject.FindProperty("m_Transforms");
        }

        public override void OnInspectorGUI()
        {
            serializedObject.Update();

            // 기본 BoneRenderer UI
            EditorGUILayout.BeginHorizontal();
            EditorGUILayout.PropertyField(m_DrawBones, k_BoneSizeLabel);
            using (new EditorGUI.DisabledScope(!m_DrawBones.boolValue))
                EditorGUILayout.PropertyField(m_BoneSize, GUIContent.none);
            EditorGUILayout.EndHorizontal();

            using (new EditorGUI.DisabledScope(!m_DrawBones.boolValue))
            {
                EditorGUI.indentLevel++;
                EditorGUILayout.PropertyField(m_BoneShape, k_BoneShapeLabel);
                EditorGUILayout.PropertyField(m_BoneColor, k_BoneColorLabel);
                EditorGUI.indentLevel--;
            }

            EditorGUILayout.BeginHorizontal();
            EditorGUILayout.PropertyField(m_DrawTripods, k_TripodSizeLabel);
            using (new EditorGUI.DisabledScope(!m_DrawTripods.boolValue))
                EditorGUILayout.PropertyField(m_TripodSize, GUIContent.none);
            EditorGUILayout.EndHorizontal();

            bool isDragPerformed = Event.current.type == EventType.DragPerform;
            EditorGUI.BeginChangeCheck();
            EditorGUILayout.PropertyField(m_Transforms, true);
            bool boneRendererDirty = EditorGUI.EndChangeCheck();
            boneRendererDirty |= Event.current.type == EventType.ValidateCommand && Event.current.commandName == "UndoRedoPerformed";
            boneRendererDirty |= Event.current.type == EventType.Used && isDragPerformed;

            // 휴머노이드 본 자동 설정 섹션
            EditorGUILayout.Space();
            EditorGUILayout.LabelField("휴머노이드 본 자동 설정", EditorStyles.boldLabel);
            
            BoneRenderer boneRenderer = target as BoneRenderer;
            GameObject targetObject = boneRenderer.gameObject;
            
            // Animator 확인 및 상태 표시
            Animator animator = targetObject.GetComponent<Animator>();
            if (animator == null)
            {
                EditorGUILayout.HelpBox("Animator 컴포넌트가 필요합니다.", MessageType.Warning);
            }
            else if (!animator.isHuman)
            {
                EditorGUILayout.HelpBox("휴머노이드 아바타로 설정되지 않았습니다.", MessageType.Warning);
            }
            else
            {
                // 사용 가능한 본 수 표시
                List<Transform> availableBones = GetAvailableHumanoidBones(animator);
                EditorGUILayout.HelpBox($"사용 가능한 휴머노이드 본: {availableBones.Count}개", MessageType.Info);
                
                // 버튼들
                EditorGUILayout.BeginHorizontal();
                if (GUILayout.Button("휴머노이드 본 추가"))
                {
                    AddHumanoidBones(boneRenderer, animator);
                }
                if (GUILayout.Button("본 목록 초기화"))
                {
                    ClearBones(boneRenderer);
                }
                EditorGUILayout.EndHorizontal();
            }

            serializedObject.ApplyModifiedProperties();

            if (boneRendererDirty)
            {
                for (int i = 0; i < targets.Length; i++)
                {
                    var renderer = targets[i] as BoneRenderer;
                    renderer.ExtractBones();
                }
            }
        }

        private List<Transform> GetAvailableHumanoidBones(Animator animator)
        {
            List<Transform> humanoidBones = new List<Transform>();
            
            foreach (HumanBodyBones boneType in HumanoidBoneTypes)
            {
                Transform bone = animator.GetBoneTransform(boneType);
                if (bone != null)
                {
                    humanoidBones.Add(bone);
                }
            }
            
            return humanoidBones;
        }

        private void AddHumanoidBones(BoneRenderer boneRenderer, Animator animator)
        {
            Undo.RecordObject(boneRenderer, "Add Humanoid Bones");
            
            List<Transform> humanoidBones = GetAvailableHumanoidBones(animator);
            boneRenderer.transforms = humanoidBones.ToArray();
            
            EditorUtility.SetDirty(boneRenderer);
            Debug.Log($"{humanoidBones.Count}개의 휴머노이드 본이 BoneRenderer에 추가되었습니다.");
        }

        private void ClearBones(BoneRenderer boneRenderer)
        {
            Undo.RecordObject(boneRenderer, "Clear Bones");
            
            boneRenderer.transforms = new Transform[0];
            
            EditorUtility.SetDirty(boneRenderer);
            Debug.Log("BoneRenderer의 본 목록이 초기화되었습니다.");
        }
    }
}