using System.Collections.Generic;
using System.Linq;
using AssetBank.DockableWindow.UIHelper;
using AssetBank.Editor.DockableWindow;
using UnityEditor;
using UnityEngine;
using UnityEngine.UIElements;

namespace AssetBank.DockableWindow
{
    public class ProjectExporterWindow : EditorWindow
    {
        private ProjectExporterController _controller;
        private VisualElement _rootElement;
        private VisualElement _contentContainer;
        private Dictionary<string, AssetModel> _assetTrees;
        private string _currentTab = "General"; // Default to General tab

        // Checkbox states for the General tab, now a dictionary
        private Dictionary<string, bool> _exportStates = new Dictionary<string, bool>();

        [MenuItem("Tools/GUI/Project Exporter")]
        public static void ShowWindow()
        {
            var wnd = GetWindow<ProjectExporterWindow>();
            wnd.titleContent = new GUIContent("Project Exporter", EditorGUIUtility.IconContent("d_Profiler.GlobalIllumination").image);
            wnd.minSize = new Vector2(400, 300);
        }

        private void OnEnable()
        {
            _controller = new ProjectExporterController();
            _assetTrees = new Dictionary<string, AssetModel>();
            _rootElement = rootVisualElement;
            
            // Initialize export states for all categories
            foreach (var category in ProjectExporterCategories.All)
            {
                _exportStates[category] = true;
            }
            
            BuildUI();
            RefreshContent(_currentTab);
        }

        private void BuildUI()
        {
            _rootElement.Clear();

            var tabContainer = new VisualElement { style = { flexDirection = FlexDirection.Row } };
            
            // General Tab
            var generalTabButton = ProjectExporterUI.CreateTab("General");
            generalTabButton.clicked += () => RefreshContent("General");
            tabContainer.Add(generalTabButton);

            // Dynamic Tabs
            foreach (var category in ProjectExporterCategories.All)
            {
                var tabButton = ProjectExporterUI.CreateTab(category);
                tabButton.clicked += () => RefreshContent(category);
                tabContainer.Add(tabButton);
            }
            
            _rootElement.Add(tabContainer);

            var scrollView = new ScrollView(ScrollViewMode.Vertical);
            _rootElement.Add(scrollView);

            _contentContainer = ProjectExporterUI.CreateMainContainer();
            scrollView.Add(_contentContainer);

            var generateButton = ProjectExporterUI.CreateGenerateButton(_currentTab == "General");
            _rootElement.Add(generateButton);
            
            generateButton.clicked += () => {
                if (_currentTab == "General")
                {
                    PerformBulkExport();
                }
                else if (_assetTrees.ContainsKey(_currentTab))
                {
                    _controller.ExportAssets(_assetTrees[_currentTab]);
                }
            };
        }

        private void RefreshContent(string tabName)
        {
            _currentTab = tabName;
            _contentContainer.Clear();

            if (tabName == "General")
            {
                DrawGeneralTab();
                return;
            }

            if (!_assetTrees.ContainsKey(tabName))
            {
                ProjectExporterDataHelper.LoadAssetTree(_assetTrees, _controller, tabName);
            }

            var rootModel = _assetTrees[tabName];
            if (rootModel != null)
            {
                foreach (var child in rootModel.Children)
                {
                    _contentContainer.Add(CreateAssetView(child, 0));
                }
            }
        }

        private void DrawGeneralTab()
        {
            var title = new Label("Select Export Types") { style = { unityFontStyleAndWeight = FontStyle.Bold } };
            _contentContainer.Add(title);

            foreach (var category in ProjectExporterCategories.All)
            {
                var toggle = ProjectExporterUI.CreateToggle($"Export {category}", _exportStates[category], evt => _exportStates[category] = evt.newValue);
                _contentContainer.Add(toggle);
            }
        }

        private void PerformBulkExport()
        {
            foreach (var category in ProjectExporterCategories.All)
            {
                if (_exportStates[category])
                {
                    ExportAllOfType(category);
                }
            }
            
            EditorUtility.DisplayDialog("Bulk Export", "Bulk export process finished.", "OK");
        }

        private void ExportAllOfType(string type)
        {
            if (!_assetTrees.ContainsKey(type))
            {
                ProjectExporterDataHelper.LoadAssetTree(_assetTrees, _controller, type);
            }
            
            var rootModel = _assetTrees[type];
            if (rootModel != null)
            {
                ProjectExporterDataHelper.SetChildrenSelection(rootModel, true); // Select all assets
                _controller.ExportAssets(rootModel);
            }
        }

        private VisualElement CreateAssetView(AssetModel model, int indentLevel)
        {
            const int indentWidth = 20;

            if (model.Children.Count > 0)
            {
                var row = new VisualElement { style = { flexDirection = FlexDirection.Row, alignItems = Align.Center, marginLeft = indentLevel * indentWidth } };
                var foldout = ProjectExporterUI.CreateFoldout(model.Name);
                foldout.style.flexGrow = 1;
                var toggle = new Toggle { value = model.IsSelected, text = "" };
                
                toggle.RegisterValueChangedCallback(evt => {
                    model.IsSelected = evt.newValue;
                    ProjectExporterDataHelper.SetChildrenSelection(model, evt.newValue);
                    UpdateChildTogglesUI(foldout, evt.newValue);
                });

                row.Add(toggle);
                row.Add(foldout);

                foreach (var child in model.Children)
                {
                    foldout.Add(CreateAssetView(child, indentLevel + 1));
                }
                return row;
            }
            else
            {
                var toggle = ProjectExporterUI.CreateToggle(model.Name);
                toggle.style.marginLeft = (indentLevel + 1) * indentWidth;
                toggle.value = model.IsSelected;
                toggle.RegisterValueChangedCallback(evt => model.IsSelected = evt.newValue);
                return toggle;
            }
        }
        
        private void UpdateChildTogglesUI(VisualElement container, bool isSelected)
        {
            container.Query<Toggle>().ForEach(childToggle => {
                childToggle.SetValueWithoutNotify(isSelected);
            });
        }
    }
}