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


namespace ShrlAlgoToolkit.RevitAddins.RvFamily;

public partial class RenameFamilyViewModel : ObservableObject
{
    public RenameFamilyViewModel(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<Family>> allCategories;

    //public ICollectionView CategoriesCollectionView { get; set; }
    private readonly Document doc;

    [ObservableProperty]
    private bool canInput;

    [ObservableProperty]
    private bool isRunning;

    [ObservableProperty]
    private bool isUsed;

    [ObservableProperty]
    private Dictionary<string, List<Family>> collection;

    [ObservableProperty]
    private int categoryCount;
    /// <summary>
    /// 列表中元素
    /// </summary>
    [ObservableProperty]
    [NotifyCanExecuteChangedFor(nameof(RevitAddins.RvFamily.RenameFamilyViewModel.ModifyNameCommand))]
    private List<RenameFamilyItem> renameItems;

    [ObservableProperty]
    private string foundText;

    [ObservableProperty]
    private string prefixText;

    [ObservableProperty]
    private string replaceText;

    [ObservableProperty]
    private string searchText;

    [ObservableProperty]
    private string separator = "-";

    [ObservableProperty]
    private string suffixText;

    // ReSharper disable once ConditionIsAlwaysTrueOrFalse
    public bool CanModify => RenameItems?.Any(item => item.IsSelected) == true;

    public bool? IsAllItemsSelected
    {
        get
        {
            if (RenameItems == null)
            {
                return false;
            }
            var selected = Enumerable.Select<RenameFamilyItem, bool>(RenameItems, item => item.IsSelected).Distinct().ToList();
            return selected?.Count == 1 ? selected.Single() : null;
        }
        set
        {
            if (value.HasValue)
            {
                SelectAll(value.Value, RenameItems);
                OnPropertyChanged();
            }
        }
    }
    partial void OnIsUsedChanged(bool value)
    {
        if (value)
        {
            var collector = doc.OfCollector().WhereElementIsNotElementType();
            foreach (var item in RenameItems)
            {
                foreach (var id in item.Family.GetFamilySymbolIds())
                {
                    var b = collector.Any(e => e.GetTypeId() == id);
                    if (b)
                    {
                        item.IsSelected = true;
                        break;
                    }
                }
            }
        }
    }
    public Dictionary<string, List<Family>> GetCategoriesFromDocument()
    {
        var dict = new FilteredElementCollector(doc)
            .OfClass(typeof(Family))
            .Cast<Family>()
            .Where(f => f.FamilyCategory is { CategoryType: CategoryType.Model or CategoryType.Annotation, AllowsBoundParameters: true })
            .GroupBy(f => f.FamilyCategory.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)))
        //{
        //    Category category = Category.GetCategory(doc, builtInCategory);
        //    if (category is
        //        {
        //            CategoryType: CategoryType.Model or CategoryType.Annotation,
        //            AllowsBoundParameters: true
        //        })
        //    {
        //        var familyType = new FilteredElementCollector(doc)
        //            .QueryElementsByType(typeof(Family))
        //            .OfCategory(builtInCategory)
        //            .Cast<Family>()
        //            .ToList();
        //        if (familyType.Any())
        //        {
        //            var name = category.Name;
        //            items.Add(builtInCategory, 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);
        ModifyFamilyName();
    }

    /// <summary>
    /// 获取列表中所有条目的新名称
    /// </summary>
    private void GetNewNames()
    {
        var selectedItems = Enumerable.Where<RenameFamilyItem>(RenameItems, item => item.IsSelected);
        foreach (var renameItem in selectedItems)
        {
            var tempName = renameItem.OldFamilyName;
            //手动修改的新名称不处理
            if (!string.IsNullOrEmpty(renameItem.NewFamilyName))
            {
                continue;
            }
            if (!string.IsNullOrEmpty(FoundText))
            {
                tempName = tempName.Replace(FoundText, string.IsNullOrEmpty(ReplaceText) ? string.Empty : ReplaceText);
            }

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

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

            renameItem.NewFamilyName = tempName;
        }
    }

    /// <summary>
    ///     获取重命名的条目
    /// </summary>
    /// <param name="items"></param>
    [RelayCommand]
    private void GetRenameItems(IList items)
    {
        if (items.Count == 0)
        {
            RenameItems = null!;
            CanInput = false;
            return;
        }

        List<RenameFamilyItem> familyItems = new();
        foreach (var item in items)
        {
            if (item is KeyValuePair<string, List<Family>> categoryItems)
            {
                //var familyType = new FilteredElementCollector(doc)
                //    .QueryElementsByType(typeof(Family))
                //    .Cast<Family>()
                //    .Where(
                //        f => f.FamilyCategory.Id.IntegerValue == new ElementId(categoryItem.Key).IntegerValue
                //    );

                foreach (var family in categoryItems.Value)
                {
                    RenameFamilyItem renameItem =
                        new()
                        {
                            OldFamilyName = family.Name,
                            Family = family,
                            CategoryName = categoryItems.Key
                        };

                    familyItems.Add(renameItem);
                }
            }
        }

        CanInput = familyItems.Any();
        RenameItems = familyItems;
        //IsAllItemsSelected = true;
        foreach (var renameItem in RenameItems)
        {
            renameItem.PropertyChanged += (sender, args) =>
            {
                //选中属性修改时，触发
                if (args.PropertyName == nameof(RevitAddins.RvFamily.RenameFamilyItem.IsSelected))
                {
                    OnPropertyChanged(nameof(IsAllItemsSelected));
                    ModifyNameCommand.NotifyCanExecuteChanged();
                    if (string.IsNullOrEmpty(renameItem.NewFamilyName))
                    {
                        GetNewNames();
                    }
                }
                //单个修改名称时
                //if (args.PropertyName == nameof(RenameFamilyItem.NewFamilyName))
                //{
                //    ModifyFamilyName();
                //}
            };
        }
    }

    /// <summary>
    ///     修改族名称
    /// </summary>
    private void ModifyFamilyName()
    {
        var needToRename = Enumerable.Where<RenameFamilyItem>(RenameItems, item => item.IsSelected);
        using Transaction ts = new(doc, "修改族名称");
        ts.Start();

        foreach (var renameItem in needToRename)
        {
            if (!string.IsNullOrEmpty(renameItem.NewFamilyName))
            {
                renameItem.Family.Name = renameItem.NewFamilyName;
                renameItem.OldFamilyName = renameItem.NewFamilyName;
            }
        }

        ts.Commit();
    }

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

    partial void Onui:InputAssist.PrefixTextChanged(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 Onui:InputAssist.SuffixTextChanged(string value)
    {
        GetNewNames();
    }

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