using System.Windows;
using System.Windows.Controls.Primitives;

using Autodesk.Revit.DB;
using Autodesk.Revit.UI;

using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;

using Nice3point.Revit.Toolkit.External.Handlers;


namespace ShrlAlgo.RvKits.RvView;

public partial class VisibilityViewModel : ObservableObject
{
    public ActionEventHandler VisibilityHandler { get; } = new();

    [ObservableProperty]
    private bool wallChecked;

    [ObservableProperty]
    private bool floorChecked;

    [ObservableProperty]
    private bool beamChecked;

    [ObservableProperty]
    private bool mechanicalChecked;

    [ObservableProperty]
    private bool columnChecked;

    [ObservableProperty]
    private bool plumbingChecked;

    [ObservableProperty]
    private bool cableTrayChecked;

    [ObservableProperty]
    private bool conduitChecked;

    partial void OnBeamCheckedChanged(bool value)
    {
        VisibilityHandler.Raise(uiapp =>
        {
            UIDocument uidoc = uiapp.ActiveUIDocument;
            var doc = uidoc.Document;
            if (doc.ActiveView.ViewTemplateId != ElementId.InvalidElementId)
            {
                MessageBox.Show("当前视图已应用视图样板，无法修改其可见性", "提示");
                return;
            }
            doc.Invoke(
                _ =>
                {
                    foreach (var builtInCategory in beamCategory)
                    {
                        var categoryId = Category.GetCategory(doc, builtInCategory).Id;

                        uidoc.ActiveView.SetCategoryHidden(categoryId, value == false);
                    }
                },
                "梁显隐"
            );
        });
    }

    partial void OnCableTrayCheckedChanged(bool value)
    {
        VisibilityHandler.Raise(uiapp =>
        {
            UIDocument uidoc = uiapp.ActiveUIDocument;
            var doc = uidoc.Document;
            if (doc.ActiveView.ViewTemplateId != ElementId.InvalidElementId)
            {
                MessageBox.Show("当前视图已应用视图样板，无法修改其可见性", "提示");
                return;
            }
            doc.Invoke(
                _ =>
                {
                    foreach (var builtInCategory in cabletrayCategory)
                    {
                        var categoryId = Category.GetCategory(doc, builtInCategory).Id;

                        uidoc.ActiveView.SetCategoryHidden(categoryId, value == false);
                    }
                },
                "桥架显隐"
            );
        });
    }

    partial void OnColumnCheckedChanged(bool value)
    {
        VisibilityHandler.Raise(uiapp =>
        {
            UIDocument uidoc = uiapp.ActiveUIDocument;
            var doc = uidoc.Document;
            if (doc.ActiveView.ViewTemplateId != ElementId.InvalidElementId)
            {
                MessageBox.Show("当前视图已应用视图样板，无法修改其可见性", "提示");
                return;
            }
            doc.Invoke(
                _ =>
                {
                    foreach (var builtInCategory in columnsCategory)
                    {
                        var categoryId = Category.GetCategory(doc, builtInCategory).Id;

                        uidoc.ActiveView.SetCategoryHidden(categoryId, value == false);
                    }
                },
                "柱显隐"
            );
        });
    }

    partial void OnWallCheckedChanged(bool value)
    {
        VisibilityHandler.Raise(uiapp =>
        {
            UIDocument uidoc = uiapp.ActiveUIDocument;
            var doc = uidoc.Document;
            if (doc.ActiveView.ViewTemplateId != ElementId.InvalidElementId)
            {
                MessageBox.Show("当前视图已应用视图样板，无法修改其可见性", "提示");
                return;
            }
            doc.Invoke(
                _ =>
                {
                    foreach (var builtInCategory in wallCategory)
                    {
                        var categoryId = Category.GetCategory(doc, builtInCategory).Id;

                        uidoc.ActiveView.SetCategoryHidden(categoryId, value == false);
                    }
                },
                "墙显隐"
            );
        });
    }

    partial void OnFloorCheckedChanged(bool value)
    {
        VisibilityHandler.Raise(uiapp =>
        {
            UIDocument uidoc = uiapp.ActiveUIDocument;
            var doc = uidoc.Document;
            if (doc.ActiveView.ViewTemplateId != ElementId.InvalidElementId)
            {
                MessageBox.Show("当前视图已应用视图样板，无法修改其可见性", "提示");
                return;
            }
            doc.Invoke(
                _ =>
                {
                    foreach (var builtInCategory in floorCategory)
                    {
                        var categoryId = Category.GetCategory(doc, builtInCategory).Id;

                        uidoc.ActiveView.SetCategoryHidden(categoryId, value == false);
                    }
                },
                "楼板显隐"
            );
        });
    }

    partial void OnConduitCheckedChanged(bool value)
    {
        VisibilityHandler.Raise(uiapp =>
        {
            UIDocument uidoc = uiapp.ActiveUIDocument;
            var doc = uidoc.Document;
            if (doc.ActiveView.ViewTemplateId != ElementId.InvalidElementId)
            {
                MessageBox.Show("当前视图已应用视图样板，无法修改其可见性", "提示");
                return;
            }
            doc.Invoke(
                _ =>
                {
                    foreach (var builtInCategory in conduitCategory)
                    {
                        var categoryId = Category.GetCategory(doc, builtInCategory).Id;

                        uidoc.ActiveView.SetCategoryHidden(categoryId, value == false);
                    }
                },
                "线管显隐"
            );
        });
    }

    partial void OnMechanicalCheckedChanged(bool value)
    {
        VisibilityHandler.Raise(uiapp =>
        {
            UIDocument uidoc = uiapp.ActiveUIDocument;
            var doc = uidoc.Document;
            if (doc.ActiveView.ViewTemplateId != ElementId.InvalidElementId)
            {
                MessageBox.Show("当前视图已应用视图样板，无法修改其可见性", "提示");
                return;
            }
            doc.Invoke(
                _ =>
                {
                    foreach (var builtInCategory in mechanicalCategory)
                    {
                        var categoryId = Category.GetCategory(doc, builtInCategory).Id;

                        uidoc.ActiveView.SetCategoryHidden(categoryId, value == false);
                    }
                },
                "暖通显隐"
            );
        });
    }

    partial void OnPlumbingCheckedChanged(bool value)
    {
        VisibilityHandler.Raise(uiapp =>
        {
            UIDocument uidoc = uiapp.ActiveUIDocument;
            var doc = uidoc.Document;
            if (doc.ActiveView.ViewTemplateId != ElementId.InvalidElementId)
            {
                MessageBox.Show("当前视图已应用视图样板，无法修改其可见性", "提示");
                return;
            }
            doc.Invoke(
                _ =>
                {
                    foreach (var builtInCategory in pipingCategory)
                    {
                        var categoryId = Category.GetCategory(doc, builtInCategory).Id;

                        uidoc.ActiveView.SetCategoryHidden(categoryId, value == false);
                    }
                },
                "给排水显隐"
            );
        });
    }

    public VisibilityViewModel(UIApplication uiapp)
    {
        UpdateCheckedState(uiapp.ActiveUIDocument.Document);
        uiapp.ViewActivated -= Uiapp_ViewActivated;
        uiapp.ViewActivated += Uiapp_ViewActivated;
    }

    private void Uiapp_ViewActivated(object sender, Autodesk.Revit.UI.Events.ViewActivatedEventArgs e)
    {
        if (!e.Document.IsFamilyDocument)
        {
            UpdateCheckedState(e.Document);
        }
    }

    /// <summary>
    /// true为可见，false为不可见
    /// </summary>
    /// <param name="doc"></param>
    /// <param name="builtInCategories"></param>
    /// <returns></returns>
    private static bool GetCheckedStatue(Document doc, params BuiltInCategory[] builtInCategories)
    {
        foreach (var cate in builtInCategories)
        {
            var category = Category.GetCategory(doc, cate);
            return !doc.ActiveView.GetCategoryHidden(category.Id);
        }
        return true;
    }
    readonly BuiltInCategory[] wallCategory = [BuiltInCategory.OST_Walls];
    readonly BuiltInCategory[] beamCategory = [BuiltInCategory.OST_StructuralFraming];
    readonly BuiltInCategory[] floorCategory = [BuiltInCategory.OST_Floors];
    readonly BuiltInCategory[] columnsCategory = [
                    BuiltInCategory.OST_StructuralColumns,
                    BuiltInCategory.OST_Columns];
    readonly BuiltInCategory[] mechanicalCategory = [
                    BuiltInCategory.OST_DuctCurves,
                    BuiltInCategory.OST_DuctAccessory,
                    BuiltInCategory.OST_DuctFitting,
                    BuiltInCategory.OST_DuctInsulations,
                    BuiltInCategory.OST_DuctTerminal,
                    BuiltInCategory.OST_FlexDuctCurves,
                    BuiltInCategory.OST_PlaceHolderDucts,BuiltInCategory.OST_MechanicalEquipment];
    readonly BuiltInCategory[] pipingCategory = [
                    BuiltInCategory.OST_PipeCurves,
                    BuiltInCategory.OST_PipeFitting,
                    BuiltInCategory.OST_PipeAccessory,
                    BuiltInCategory.OST_PipeInsulations,
                    BuiltInCategory.OST_Sprinklers,
                    BuiltInCategory.OST_FlexPipeCurves,
                    BuiltInCategory.OST_PlaceHolderPipes,
                    BuiltInCategory.OST_PlumbingFixtures];
    readonly BuiltInCategory[] cabletrayCategory = [
                    BuiltInCategory.OST_CableTray,
                    BuiltInCategory.OST_CableTrayFitting,];
    readonly BuiltInCategory[] conduitCategory = [
                    BuiltInCategory.OST_Conduit,
                    BuiltInCategory.OST_ConduitFitting,];

    private void UpdateCheckedState(Document doc)
    {
        if (doc.ActiveView.ViewTemplateId != ElementId.InvalidElementId)
        {
            return;
        }
        WallChecked = GetCheckedStatue(doc, wallCategory);
        BeamChecked = GetCheckedStatue(doc, beamCategory);
        FloorChecked = GetCheckedStatue(doc, floorCategory);
        ColumnChecked = GetCheckedStatue(doc, columnsCategory);
        MechanicalChecked = GetCheckedStatue(doc, mechanicalCategory);
        PlumbingChecked = GetCheckedStatue(doc, pipingCategory);
        CableTrayChecked = GetCheckedStatue(doc, cabletrayCategory);
        ConduitChecked = GetCheckedStatue(doc, conduitCategory);
    }

    [RelayCommand]
    private void Closing()
    {
        VisibilityHandler.Raise(uiapp => uiapp.ViewActivated -= Uiapp_ViewActivated);
    }
}