using System.Collections;
using Autodesk.Revit.DB;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;

using ShrlAlgoToolkit.RevitAddins.RvFamily;

namespace ShrlAlgoToolkit.RevitAddins.Standardizer;

public partial class RenameTypeViewModel : ObservableObject
{
    public RenameTypeViewModel(UIApplication uiApplication)
    {
        doc = uiApplication.ActiveUIDocument.Document;
        allCategories = GetCategoriesFromDocument();
        Collection = allCategories;
        //ICollectionView cv = CollectionViewSource.GetDefaultView(Categories);
        //cv.Filter = item => string.IsNullOrEmpty(SearchText) ||
        //                    ((KeyValuePair<BuiltInCategory, string>)item).Value.IndexOf(SearchText, StringComparison.OrdinalIgnoreCase) >= 0;
        //TaskDialog.Show("数量", CategoriesDictionary.Count.ToString());
    }

    //[ObservableProperty]
    //private List<BuiltInCategory> selectedBuiltInCategories;
    private readonly Dictionary<string, List<ElementType>> allCategories;

    //public ICollectionView CategoriesCollectionView { get; set; }
    private readonly Document doc;
    /// <summary>
    /// 列表中元素
    /// </summary>
    [ObservableProperty]
    [NotifyCanExecuteChangedFor(nameof(ModifyNameCommand))]
    public partial List<RenameTypeItem> RenameItems { get; set; }

    [ObservableProperty]
    public partial bool CanInput { get; set; }

    [ObservableProperty]
    public partial bool IsRunning { get; set; }

    /// <summary>
    /// 选中正在使用中的条目
    /// </summary>
    [ObservableProperty]
    public partial bool IsUsed { get; set; }

    [ObservableProperty]
    public partial Dictionary<string, List<ElementType>> Collection { get; set; }

    [ObservableProperty]
    public partial int CategoryCount { get; set; }

    [ObservableProperty]
    public partial int ModifyType { get; set; }

    [ObservableProperty]
    public partial string FoundText { get; set; }

    [ObservableProperty]
    public partial string PrefixText { get; set; }

    [ObservableProperty]
    public partial string ReplaceText { get; set; }

    [ObservableProperty]
    public partial string SearchText { get; set; }

    [ObservableProperty]
    public partial string Separator { get; set; } = "-";

    [ObservableProperty]
    public partial string SuffixText { get; set; }
    [ObservableProperty]
    public partial bool ByFamilyName { get; set; }
    //[ObservableProperty]
    //private IList selectedItems;
    // ReSharper disable once ConditionIsAlwaysTrueOrFalse
    public bool CanModify => RenameItems != null && RenameItems.Any<RenameTypeItem>(item => item.IsSelected);
    //[ObservableProperty]
    //private bool? isAllItemsSelected;

    //partial void OnIsAllItemsSelectedChanged(bool? value)
    //{
    //    if (value.HasValue)
    //    {
    //        SelectAll(value.Value, RenameItems);
    //    }
    //}

    public bool? IsAllItemsSelected
    {
        get
        {
            if (RenameItems == null)
            {
                return false;
            }
            var selected = Enumerable.Distinct<bool>(RenameItems?.Select(item => item.IsSelected)).ToList();
            return selected?.Count == 1 ? selected.Single() : null;
        }
        set
        {
            if (value.HasValue)
            {
                SelectAll(value.Value, RenameItems);
                OnPropertyChanged();
            }
        }
    }

    public Dictionary<string, List<ElementType>> GetCategoriesFromDocument()
    {
        var dict = new FilteredElementCollector(doc)
            .OfClass(typeof(ElementType))
            .Cast<ElementType>()
            .Where(t => t.CanBeRenamed && t.Category is { CategoryType: CategoryType.Model or CategoryType.Annotation, AllowsBoundParameters: true })
            .GroupBy(t => t.Category.Id)
            .ToDictionary(g => Category.GetCategory(doc, g.Key).Name, g => g.ToList());
        CategoryCount = dict.Count;
        return dict;
        //foreach (BuiltInCategory builtInCategory in Enum.GetValues(typeof(BuiltInCategory)))
        //{
        //    try
        //    {
        //        var types = new FilteredElementCollector(doc).OfCategory(builtInCategory).WhereElementIsElementType().Cast<ElementType>().ToList();
        //        if (types.Any() && types.Any(t => t.CanBeRenamed))
        //        {
        //            var category = types.FirstOrDefault()!.Category;
        //            if (category is { CategoryType: CategoryType.Model or CategoryType.Annotation, AllowsBoundParameters: true })
        //            {
        //                var name = category.Name;
        //                items.Add(builtInCategory, name);
        //            }
        //        }
        //    }
        //    catch (Exception)
        //    {
        //        //string name = Enum.GetName(typeof(BuiltInCategory), builtInCategory);
        //        //TaskDialog.Show( "错误", $"{name}");
        //    }
        //}

        //CategoryCount = items.Count;
        //return items.OrderBy(kv => kv.Value).ToDictionary(kv => kv.Key, kv => kv.Value);
    }

    [RelayCommand(CanExecute = nameof(CanModify))]
    private async Task ModifyName()
    {
        await Task.Delay(1_000);
        ModifyTypeName();
    }
    /// <summary>
    /// 获取列表中所有条目的新名称
    /// </summary>
    private void GetNewNames()
    {
        var selectedItems = Enumerable.Where<RenameTypeItem>(RenameItems, item => item.IsSelected);
        foreach (var renameItem in selectedItems)
        {
            string tempName = renameItem.OldTypeName;
            if (ByFamilyName)
            {
                tempName = renameItem.FamilyName;
            }
            ////手动修改的新名称不处理
            //if (!string.IsNullOrEmpty(renameItem.NewTypeName))
            //{
            //    continue;
            //}
            if (!string.IsNullOrEmpty(FoundText))
            {
                tempName = tempName.Replace(FoundText, string.IsNullOrEmpty(ReplaceText) ? string.Empty : ReplaceText);
            }

            if (!string.IsNullOrEmpty(PrefixText))
            {
                tempName = tempName.Insert(0, $"{PrefixText}{Separator}");
            }

            if (!string.IsNullOrEmpty(SuffixText))
            {
                tempName += $"{Separator}{SuffixText}";
            }

            renameItem.NewTypeName = tempName;
        }
    }

    [RelayCommand]
    private void GetRenameItems(IList items)
    {
        if (items.Count == 0)
        {
            RenameItems = null!;
            CanInput = false;
            return;
        }

        List<RenameTypeItem> symbolItems = [];
        foreach (var item in items)
        {
            if (item is KeyValuePair<string, List<ElementType>> categoryItems)
            {
                foreach (var type in categoryItems.Value)
                {
                    RenameTypeItem renameItem = new()
                    {
                        OldTypeName = type.Name,
                        ElementType = type,
                        CategoryName = categoryItems.Key,
                        FamilyName = type.FamilyName
                    };

                    symbolItems.Add(renameItem);
                }
            }
        }

        CanInput = symbolItems.Count > 0;
        RenameItems = symbolItems;

        foreach (var renameItem in RenameItems)
        {
            renameItem.PropertyChanged += (_, args) =>
            {
                if (args.PropertyName == nameof(RenameTypeItem.IsSelected))
                {
                    OnPropertyChanged(nameof(IsAllItemsSelected));
                    //foreach (RenameTypeItem item in SelectedItems)
                    //{
                    //    item.IsSelected = renameItem.IsSelected;
                    //}
                    ModifyNameCommand.NotifyCanExecuteChanged();
                    if (string.IsNullOrEmpty(renameItem.NewTypeName))
                    {
                        GetNewNames();
                    }
                }
                //if (args.PropertyName == nameof(RenameTypeItem.NewTypeName))
                //{
                //    ModifyTypeName();
                //}
            };
        }

        //IsAllItemsSelected = true;
    }

    private void ModifyTypeName()
    {
        var needToRename = Enumerable.Where<RenameTypeItem>(RenameItems, item => item.IsSelected);
        using Transaction ts = new(doc, "修改类型名称");
        ts.Start();

        foreach (var renameItem in needToRename)
        {
            if (!string.IsNullOrEmpty(renameItem.NewTypeName))
            {
                renameItem.ElementType.Name = renameItem.NewTypeName;
                renameItem.OldTypeName = renameItem.NewTypeName;
            }
        }

        ts.Commit();
    }

    partial void OnFoundTextChanged(string value)
    {
        GetNewNames();
    }

    partial void OnPrefixTextChanged(string value)
    {
        GetNewNames();
    }

    partial void OnReplaceTextChanged(string value)
    {
        GetNewNames();
    }

    partial void OnSearchTextChanged(string value)
    {
        Collection = allCategories.Where(kv => string.IsNullOrEmpty(value) || kv.Key.IndexOf(value, StringComparison.OrdinalIgnoreCase) >= 0)
            .ToDictionary(k => k.Key, v => v.Value);
        CategoryCount = Collection.Count;
        //CategoriesCollectionView.Refresh();
    }

    partial void OnSeparatorChanged(string value)
    {
        GetNewNames();
    }

    partial void OnSuffixTextChanged(string value)
    {
        GetNewNames();
    }

    private static void SelectAll(bool select, IEnumerable<RenameTypeItem> models)
    {
        foreach (var model in models)
        {
            model.IsSelected = select;
        }
    }
}