using CommunityToolkit.Mvvm.ComponentModel;
using OpenTap;
using OpenTap.Addin;
using OpenTap.Addin.Util;
using System.Collections.ObjectModel;
using System.Windows;

namespace OpenTapEditor
{
    /// <summary>
    /// VariableSelector.xaml 的交互逻辑
    /// </summary>
    [ObservableObject]
    public partial class VariableSelector : Window
    {
        public static DependencyProperty ResultProperty = DependencyProperty.Register(
            "Result",
            typeof(string),
            typeof(VariableSelector),
            new PropertyMetadata(null)
        );

        public string Result
        {
            get => (string)GetValue(ResultProperty);
            set
            {
                SetValue(ResultProperty, value);
            }
        }

        [ObservableProperty]
        private ObservableCollection<TestVariable> variables;

        public VariableSelector()
        {
            DataContext = this;
            Variables = new ObservableCollection<TestVariable>() {
                new TestVariable(){
                    Name = ConstNames.LocalsName,
                    NameCanEdit = false,
                    Type = TestVariableType.Container
                },
                new TestVariable(){
                    Name = ConstNames.ParametersName,
                    NameCanEdit = false,
                    Type = TestVariableType.Container
                },
                new TestVariable(){
                    Name = ConstNames.FileGlobalsName,
                    NameCanEdit = false,
                    Type = TestVariableType.Container
                },
                new TestVariable(){
                    Name = ConstNames.StationGlobalsName,
                    Type = TestVariableType.Container,
                    NameCanEdit = false,
                    Children = UIStationGlobalsManager.Instance.Datasource
                },
                new TestVariable(){
                    Name = ConstNames.ThisContextName,
                    NameCanEdit = false,
                    Type = TestVariableType.Refrence,
                }
            };
            InitializeComponent();
            tree.ItemDoubleClicked += Tree_ItemDoubleClicked;
        }

        private void Tree_ItemDoubleClicked(object? sender, string e)
        {
            if (string.IsNullOrEmpty(Result))
            {
                Result += e;
            }
            else
            {
                var length = tb.SelectionLength;
                if (length > 0)
                {
                    int index = tb.SelectionStart;
                    tb.Text = tb.Text.Remove(index, length).Insert(index, e);
                }
                else
                {
                    string text = $" {e} ";
                    int p = tb.CaretIndex;
                    if (p == tb.Text.Length)
                    {
                        text = $" {e}";
                    }


                    tb.Text = tb.Text.Insert(p, text);
                    tb.CaretIndex = p + text.Length;

                    tb.Select(p, text.Length);
                }
            }
        }

        public bool? Open(TestPlan plan, TestStepList seq)
        {
            Variables[0].Children = seq.Variables;
            Variables[1].Children = seq.Parameters;
            Variables[2].Children = plan.Variables;
            return this.ShowDialog();
        }

        private void tb_GotFocus(object sender, RoutedEventArgs e)
        {
            // tb.Select(start, length);
        }

        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            if (tree.EditingCell != null)
            {
                e.Cancel = !tree.EditingCell.PreSubmit(tree.EditingCell, tree.EditingCell.editing.Text, tree.EditingCell.DataContext);
            }
        }
    }
}