using UnityEditor;
using UnityEngine;
using AlicizaX.UI;
using System.Collections.Generic;

namespace AlicizaX.UI
{
    [CustomEditor(typeof(UXController))]
    public class UXControllerEditor : UnityEditor.Editor
    {
        private SerializedProperty _controllersProp;
        private bool _showRecorders = true;
        private bool _previewMode = false;
        private Dictionary<int, bool> _controllerFoldouts = new Dictionary<int, bool>();

        private GUIStyle _headerStyle;
        private GUIStyle _toolbarStyle;
        private GUIStyle _controllerHeaderStyle;

        private void OnEnable()
        {
            _controllersProp = serializedObject.FindProperty("_controllers");
        }

        private void InitStyles()
        {
            if (_headerStyle == null)
            {
                _headerStyle = new GUIStyle(EditorStyles.boldLabel)
                {
                    fontSize = 13,
                    fontStyle = FontStyle.Bold
                };
            }

            if (_toolbarStyle == null)
            {
                _toolbarStyle = new GUIStyle(EditorStyles.toolbar)
                {
                    fixedHeight = 25
                };
            }

            if (_controllerHeaderStyle == null)
            {
                _controllerHeaderStyle = new GUIStyle(EditorStyles.foldout)
                {
                    fontStyle = FontStyle.Bold
                };
            }
        }

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

            var controller = target as UXController;

            // Header
            DrawHeader();
            EditorGUILayout.Space(5);

            // Preview Mode
            DrawPreviewMode(controller);
            EditorGUILayout.Space(5);

            // Toolbar
            DrawToolbar();
            EditorGUILayout.Space(5);

            // Controllers List
            DrawControllersList(controller);
            EditorGUILayout.Space(5);

            // Recorders Section
            DrawRecorders(controller);

            serializedObject.ApplyModifiedProperties();
        }

        private void DrawHeader()
        {
            EditorGUILayout.BeginVertical(EditorStyles.helpBox);
            EditorGUILayout.BeginHorizontal();

            EditorGUILayout.LabelField("UX 控制器", _headerStyle, GUILayout.Width(130));
            EditorGUILayout.LabelField($"控制器数量: {_controllersProp.arraySize}", EditorStyles.miniLabel);

            GUILayout.FlexibleSpace();

            if (GUILayout.Button("+ 添加控制器", GUILayout.Width(110)))
            {
                AddNewController();
            }

            EditorGUILayout.EndHorizontal();
            EditorGUILayout.EndVertical();
        }

        private void DrawPreviewMode(UXController controller)
        {
            Color oldColor = GUI.backgroundColor;
            if (_previewMode) GUI.backgroundColor = new Color(0.5f, 1f, 0.5f);

            EditorGUILayout.BeginVertical(EditorStyles.helpBox);
            GUI.backgroundColor = oldColor;

            EditorGUILayout.BeginHorizontal();

            EditorGUI.BeginChangeCheck();
            _previewMode = EditorGUILayout.Toggle("预览模式", _previewMode);
            if (EditorGUI.EndChangeCheck())
            {
                if (!_previewMode)
                {
                    ResetAllControllers(controller);
                }
            }

            if (_previewMode)
            {
                GUILayout.FlexibleSpace();
                if (GUILayout.Button("重置全部", GUILayout.Width(80)))
                {
                    ResetAllControllers(controller);
                }
            }

            EditorGUILayout.EndHorizontal();

            if (_previewMode)
            {
                EditorGUILayout.HelpBox("预览模式已激活。点击状态按钮进行预览。", MessageType.Info);
            }

            EditorGUILayout.EndVertical();
        }

        private void DrawToolbar()
        {
            EditorGUILayout.BeginHorizontal(_toolbarStyle);

            if (GUILayout.Button("全部展开", EditorStyles.toolbarButton, GUILayout.Width(70)))
            {
                for (int i = 0; i < _controllersProp.arraySize; i++)
                {
                    _controllerFoldouts[i] = true;
                }
            }

            if (GUILayout.Button("全部折叠", EditorStyles.toolbarButton, GUILayout.Width(75)))
            {
                _controllerFoldouts.Clear();
            }

            GUILayout.FlexibleSpace();

            EditorGUILayout.EndHorizontal();
        }

        private void DrawControllersList(UXController controller)
        {
            if (_controllersProp.arraySize == 0)
            {
                EditorGUILayout.HelpBox("未定义控制器。点击 '+ 添加控制器' 创建一个。", MessageType.Info);
                return;
            }

            for (int i = 0; i < _controllersProp.arraySize; i++)
            {
                DrawControllerEntry(controller, i);
                EditorGUILayout.Space(3);
            }
        }

        private void DrawControllerEntry(UXController controller, int index)
        {
            var element = _controllersProp.GetArrayElementAtIndex(index);
            var nameProp = element.FindPropertyRelative("_name");
            var lengthProp = element.FindPropertyRelative("_length");
            var descProp = element.FindPropertyRelative("_description");

            if (!_controllerFoldouts.ContainsKey(index))
            {
                _controllerFoldouts[index] = false;
            }

            bool isFolded = _controllerFoldouts[index];

            EditorGUILayout.BeginVertical(EditorStyles.helpBox);

            // Header
            DrawControllerHeader(index, nameProp, ref isFolded);
            _controllerFoldouts[index] = isFolded;

            // Expanded Content
            if (isFolded)
            {
                EditorGUI.indentLevel++;

                // Name
                EditorGUILayout.BeginHorizontal();
                EditorGUILayout.LabelField("名称", GUILayout.Width(70));
                nameProp.stringValue = EditorGUILayout.TextField(nameProp.stringValue);
                EditorGUILayout.EndHorizontal();

                // Length
                EditorGUILayout.BeginHorizontal();
                EditorGUILayout.LabelField("长度", GUILayout.Width(70));
                lengthProp.intValue = Mathf.Max(1, EditorGUILayout.IntField(lengthProp.intValue));
                EditorGUILayout.EndHorizontal();

                // Description
                EditorGUILayout.BeginHorizontal();
                EditorGUILayout.LabelField("描述", GUILayout.Width(70));
                descProp.stringValue = EditorGUILayout.TextField(descProp.stringValue);
                EditorGUILayout.EndHorizontal();

                // Preview
                if (_previewMode && !Application.isPlaying)
                {
                    EditorGUILayout.Space(5);
                    DrawControllerPreview(controller, index, lengthProp.intValue);
                }

                EditorGUI.indentLevel--;
            }

            EditorGUILayout.EndVertical();
        }

        private void DrawControllerHeader(int index, SerializedProperty nameProp, ref bool isFolded)
        {
            EditorGUILayout.BeginHorizontal();

            // Foldout
            isFolded = EditorGUILayout.Foldout(isFolded, $"[{index}] {nameProp.stringValue}", true, _controllerHeaderStyle);

            GUILayout.FlexibleSpace();

            // Buttons
            if (GUILayout.Button("▲", EditorStyles.miniButtonLeft, GUILayout.Width(25)) && index > 0)
            {
                _controllersProp.MoveArrayElement(index, index - 1);
                GUIUtility.ExitGUI();
            }

            if (GUILayout.Button("▼", EditorStyles.miniButtonMid, GUILayout.Width(25)) && index < _controllersProp.arraySize - 1)
            {
                _controllersProp.MoveArrayElement(index, index + 1);
                GUIUtility.ExitGUI();
            }

            if (GUILayout.Button("⎘", EditorStyles.miniButtonMid, GUILayout.Width(25)))
            {
                DuplicateController(index);
                GUIUtility.ExitGUI();
            }

            if (GUILayout.Button("×", EditorStyles.miniButtonRight, GUILayout.Width(25)))
            {
                if (EditorUtility.DisplayDialog("删除控制器",
                    $"删除控制器 '{nameProp.stringValue}'?", "删除", "取消"))
                {
                    DeleteController(index);
                }
            }

            EditorGUILayout.EndHorizontal();
        }

        private void DrawControllerPreview(UXController controller, int controllerIndex, int length)
        {
            EditorGUILayout.BeginVertical(EditorStyles.helpBox);
            EditorGUILayout.LabelField("预览", EditorStyles.boldLabel);

            var handle = controller.GetControllerAt(controllerIndex);
            if (handle != null)
            {
                int currentIndex = handle.SelectedIndex;

                EditorGUILayout.BeginHorizontal();
                EditorGUILayout.LabelField($"状态: {currentIndex}", GUILayout.Width(60));

                string[] options = new string[length];
                for (int i = 0; i < length; i++)
                {
                    options[i] = i.ToString();
                }

                EditorGUI.BeginChangeCheck();
                int newIndex = GUILayout.SelectionGrid(currentIndex, options, Mathf.Min(length, 6));
                if (EditorGUI.EndChangeCheck())
                {
                    controller.SetControllerIndexInternal(controllerIndex, newIndex);
                    EditorUtility.SetDirty(controller);
                    SceneView.RepaintAll();
                }

                EditorGUILayout.EndHorizontal();
            }

            EditorGUILayout.EndVertical();
        }

        private void DrawRecorders(UXController controller)
        {
            EditorGUILayout.BeginVertical(EditorStyles.helpBox);

            EditorGUILayout.BeginHorizontal();
            _showRecorders = EditorGUILayout.Foldout(_showRecorders, $"状态记录器 ({controller.Recorders.Count})", true);
            EditorGUILayout.EndHorizontal();

            if (_showRecorders)
            {
                if (controller.Recorders.Count == 0)
                {
                    EditorGUILayout.HelpBox("未附加状态记录器。", MessageType.Info);
                }
                else
                {
                    EditorGUI.indentLevel++;

                    for (int i = 0; i < controller.Recorders.Count; i++)
                    {
                        DrawRecorderEntry(controller.Recorders[i], i);
                    }

                    EditorGUI.indentLevel--;
                }
            }

            EditorGUILayout.EndVertical();
        }

        private void DrawRecorderEntry(UXControllerStateRecorder recorder, int index)
        {
            if (recorder == null) return;

            EditorGUILayout.BeginHorizontal(EditorStyles.helpBox);

            EditorGUILayout.LabelField($"[{index}]", GUILayout.Width(30));
            EditorGUILayout.LabelField($"ID: {recorder.ID}", GUILayout.Width(100));

            EditorGUI.BeginDisabledGroup(true);
            EditorGUILayout.ObjectField(recorder, typeof(UXControllerStateRecorder), true);
            EditorGUI.EndDisabledGroup();

            EditorGUILayout.LabelField($"状态数: {recorder.StateEntries.Count}", GUILayout.Width(60));

            if (GUILayout.Button("选择", GUILayout.Width(60)))
            {
                Selection.activeGameObject = recorder.gameObject;
            }

            EditorGUILayout.EndHorizontal();
        }

        private void AddNewController()
        {
            _controllersProp.arraySize++;
            var newElement = _controllersProp.GetArrayElementAtIndex(_controllersProp.arraySize - 1);
            newElement.FindPropertyRelative("_name").stringValue = $"Controller{_controllersProp.arraySize}";
            newElement.FindPropertyRelative("_length").intValue = 2;
            newElement.FindPropertyRelative("_description").stringValue = "";
            _controllerFoldouts[_controllersProp.arraySize - 1] = true;
        }

        private void DuplicateController(int index)
        {
            _controllersProp.InsertArrayElementAtIndex(index);

            var newProp = _controllersProp.GetArrayElementAtIndex(index + 1);
            var nameProp = newProp.FindPropertyRelative("_name");
            nameProp.stringValue += " 副本";

            _controllerFoldouts[index + 1] = true;
        }

        private void DeleteController(int index)
        {
            if (index < 0 || index >= _controllersProp.arraySize)
            {
                return;
            }

            Undo.RecordObject(serializedObject.targetObject, "删除控制器");

            _controllersProp.DeleteArrayElementAtIndex(index);
            _controllerFoldouts.Remove(index);

            // Rebuild foldout dictionary with corrected indices
            var newFoldouts = new Dictionary<int, bool>();
            foreach (var kvp in _controllerFoldouts)
            {
                if (kvp.Key < index)
                {
                    newFoldouts[kvp.Key] = kvp.Value;
                }
                else if (kvp.Key > index)
                {
                    newFoldouts[kvp.Key - 1] = kvp.Value;
                }
            }
            _controllerFoldouts = newFoldouts;

            serializedObject.ApplyModifiedProperties();
            EditorUtility.SetDirty(serializedObject.targetObject);

            GUIUtility.ExitGUI();
        }

        private void ResetAllControllers(UXController controller)
        {
            for (int i = 0; i < controller.ControllerCount; i++)
            {
                controller.SetControllerIndexInternal(i, 0);
            }
            EditorUtility.SetDirty(controller);
            SceneView.RepaintAll();
        }
    }
}