using UnityEngine;
using UnityEditor;
using UnityEngine.UIElements;
using UnityEditor.UIElements;

namespace KindRetargeting
{
    [CustomEditor(typeof(PropLocationController))]
    public class PropLocationControllerEditor : BaseRetargetingEditor
    {
        private const string CommonUssPath = "Assets/Scripts/Streamingle/StreamingleControl/Editor/UXML/StreamingleCommon.uss";

        private VisualElement offsetContainer;
        private VisualElement propListContainer;
        private PropLocationController controller;

        public override VisualElement CreateInspectorGUI()
        {
            controller = target as PropLocationController;
            if (controller == null) return new VisualElement();
            var root = new VisualElement();

            var commonUss = AssetDatabase.LoadAssetAtPath<StyleSheet>(CommonUssPath);
            if (commonUss != null) root.styleSheets.Add(commonUss);

            // 기본 프로퍼티
            var iterator = serializedObject.GetIterator();
            iterator.NextVisible(true); // skip m_Script
            while (iterator.NextVisible(false))
            {
                var field = new PropertyField(iterator.Copy());
                root.Add(field);
            }

            // 오프셋 조정 섹션
            root.Add(new Label("오프셋 조정") { style = { unityFontStyleAndWeight = FontStyle.Bold, marginTop = 10 } });
            offsetContainer = new VisualElement();
            root.Add(offsetContainer);

            // 부착된 프랍 목록 섹션
            root.Add(new Label("부착된 프랍 목록") { style = { unityFontStyleAndWeight = FontStyle.Bold, marginTop = 10 } });
            propListContainer = new VisualElement();
            root.Add(propListContainer);

            // 프랍 위치 이동 버튼
            root.Add(new Label("프랍 위치 이동") { style = { unityFontStyleAndWeight = FontStyle.Bold, marginTop = 10 } });
            var btnRow = new VisualElement { style = { flexDirection = FlexDirection.Row, marginTop = 4 } };

            var headBtn = new Button(() => controller.MoveToHead()) { text = "머리로 이동" };
            headBtn.style.flexGrow = 1; headBtn.style.height = 30; headBtn.style.marginRight = 2;
            btnRow.Add(headBtn);

            var leftBtn = new Button(() => controller.MoveToLeftHand()) { text = "왼손으로 이동" };
            leftBtn.style.flexGrow = 1; leftBtn.style.height = 30; leftBtn.style.marginRight = 2;
            btnRow.Add(leftBtn);

            var rightBtn = new Button(() => controller.MoveToRightHand()) { text = "오른손으로 이동" };
            rightBtn.style.flexGrow = 1; rightBtn.style.height = 30;
            btnRow.Add(rightBtn);

            root.Add(btnRow);

            var detachBtn = new Button(() =>
            {
                if (Selection.activeGameObject != null)
                    Undo.RecordObject(Selection.activeGameObject.transform, "Detach Prop");
                controller.DetachProp();
            }) { text = "프랍 해제" };
            detachBtn.style.height = 30;
            detachBtn.style.marginTop = 4;
            root.Add(detachBtn);

            // 주기적으로 동적 UI 갱신
            root.schedule.Execute(() => RebuildDynamicUI()).Every(500);
            RebuildDynamicUI();

            return root;
        }

        private void RebuildDynamicUI()
        {
            if (controller == null) return;
            RebuildOffsets();
            RebuildPropLists();
        }

        private void RebuildOffsets()
        {
            if (offsetContainer == null) return;
            offsetContainer.Clear();

            BuildOffsetSection(offsetContainer, "왼손 오프셋", controller.GetLeftHandOffset());
            BuildOffsetSection(offsetContainer, "오른손 오프셋", controller.GetRightHandOffset());
            BuildOffsetSection(offsetContainer, "머리 오프셋", controller.GetHeadOffset());
        }

        private void BuildOffsetSection(VisualElement parent, string label, Transform offset)
        {
            if (offset == null) return;

            var foldout = new Foldout { text = label, value = true };

            var posField = new Vector3Field("위치") { value = offset.localPosition };
            posField.RegisterValueChangedCallback(evt =>
            {
                Undo.RecordObject(offset, $"Update {label}");
                offset.localPosition = evt.newValue;
                EditorUtility.SetDirty(offset);
            });
            foldout.Add(posField);

            var rotField = new Vector3Field("회전") { value = offset.localRotation.eulerAngles };
            rotField.RegisterValueChangedCallback(evt =>
            {
                Undo.RecordObject(offset, $"Update {label}");
                offset.localRotation = Quaternion.Euler(evt.newValue);
                EditorUtility.SetDirty(offset);
            });
            foldout.Add(rotField);

            parent.Add(foldout);
        }

        private void RebuildPropLists()
        {
            if (propListContainer == null) return;
            propListContainer.Clear();

            BuildPropListSection(propListContainer, "머리 프랍", controller.GetHeadProps());
            BuildPropListSection(propListContainer, "왼손 프랍", controller.GetLeftHandProps());
            BuildPropListSection(propListContainer, "오른손 프랍", controller.GetRightHandProps());
        }

        private void BuildPropListSection(VisualElement parent, string title, GameObject[] propList)
        {
            var box = new VisualElement();
            box.style.backgroundColor = new Color(0, 0, 0, 0.1f);
            box.style.borderTopLeftRadius = box.style.borderTopRightRadius =
                box.style.borderBottomLeftRadius = box.style.borderBottomRightRadius = 4;
            box.style.paddingTop = box.style.paddingBottom =
                box.style.paddingLeft = box.style.paddingRight = 4;
            box.style.marginBottom = 4;

            box.Add(new Label(title) { style = { unityFontStyleAndWeight = FontStyle.Bold } });

            if (propList.Length > 0)
            {
                foreach (var prop in propList)
                {
                    if (prop == null) continue;
                    var row = new VisualElement { style = { flexDirection = FlexDirection.Row, alignItems = Align.Center, marginTop = 2 } };
                    row.Add(new Label(prop.name) { style = { flexGrow = 1 } });
                    var selectBtn = new Button(() => Selection.activeGameObject = prop) { text = "선택" };
                    selectBtn.style.width = 60;
                    row.Add(selectBtn);
                    box.Add(row);
                }
            }
            else
            {
                box.Add(new Label("부착된 프랍 없음") { style = { color = new Color(0.6f, 0.6f, 0.6f) } });
            }

            parent.Add(box);
        }
    }
}