using System.Collections.ObjectModel;
using System.Windows.Markup;
using Plume.WPF.Commands;
using Plume.WPF.Mvvm;

namespace JD.Oasis.Module.ViewModel.TreeViewModel.Common
{
    [ContentProperty("Children")]
    public class TreeNodeViewModel : BindableBase
    {

        private ObservableCollection<TreeNodeViewModel> _children = new ObservableCollection<TreeNodeViewModel>();
        private DelegateCommand<object> _defaultActionCommand;
        private bool _isDraggable = true;
        private bool _isEditable;
        private bool _isEditing;
        private bool _isExpanded;
        private bool _isLoading;
        private bool _isSelectable = true;
        private bool _isSelected;
        private object _tag;

        /////////////////////////////////////////////////////////////////////////////////////////////////////
        // CONSTRUCTOR
        /////////////////////////////////////////////////////////////////////////////////////////////////////

        public TreeNodeViewModel(string name)
        {
            Name = name;
        }

        /////////////////////////////////////////////////////////////////////////////////////////////////////
        // PUBLIC PROCEDURES
        /////////////////////////////////////////////////////////////////////////////////////////////////////

        /// <summary>
        /// Gets the collection of child nodes.
        /// </summary>
        /// <value>The collection of child nodes.</value>
        public ObservableCollection<TreeNodeViewModel> Children => _children ?? (_children = new ObservableCollection<TreeNodeViewModel>());

        /// <summary>
        /// Gets or sets the default action command.
        /// </summary>
        /// <value>The default action command.</value>
        public DelegateCommand<object> DefaultActionCommand
        {
            get => _defaultActionCommand;
            set
            {
                _defaultActionCommand = value;
                OnPropertyChanged();
            }
        }

        /// <summary>
        /// Gets or sets whether the node is draggable.
        /// </summary>
        /// <value>
        /// <c>true</c> if the node is draggable; otherwise, <c>false</c>.
        /// </value>
        public bool IsDraggable
        {
            get => _isDraggable;
            set => SetProperty(ref _isDraggable, value);
        }

        /// <summary>
        /// Gets or sets whether the node is editable.
        /// </summary>
        /// <value>
        /// <c>true</c> if the node is editable; otherwise, <c>false</c>.
        /// </value>
        public bool IsEditable
        {
            get => _isEditable;
            set => SetProperty(ref _isEditable, value);
        }

        /// <summary>
        /// Gets or sets whether the node is currently being edited.
        /// </summary>
        /// <value>
        /// <c>true</c> if the node is currently being edited; otherwise, <c>false</c>.
        /// </value>
        public bool IsEditing
        {
            get => _isEditing;
            set => SetProperty(ref _isEditing, value);
        }

        /// <summary>
        /// Gets or sets whether the node is expanded.
        /// </summary>
        /// <value>
        /// <c>true</c> if the node is expanded; otherwise, <c>false</c>.
        /// </value>
        public bool IsExpanded
        {
            get => _isExpanded;
            set => SetProperty(ref _isExpanded, value);
        }

        /// <summary>
        /// Gets or sets whether the node is currently loading children asynchronously.
        /// </summary>
        /// <value>
        /// <c>true</c> if the node is currently loading children asynchronously; otherwise, <c>false</c>.
        /// </value>
        public bool IsLoading
        {
            get => _isLoading;
            set => SetProperty(ref _isLoading, value);
        }

        /// <summary>
        /// Gets or sets whether the node is capable of being selected.
        /// </summary>
        /// <value>
        /// <c>true</c> if the node is capable of being selected; otherwise, <c>false</c>.
        /// </value>
        public bool IsSelectable
        {
            get => _isSelectable;
            set => SetProperty(ref _isSelectable, value);
        }

        /// <summary>
        /// Gets or sets whether the node is selected.
        /// </summary>
        /// <value>
        /// <c>true</c> if the node is selected; otherwise, <c>false</c>.
        /// </value>
        public bool IsSelected
        {
            get => _isSelected;
            set => SetProperty(ref _isSelected, value);
        }

        /// <summary>
        /// Gets the name of the node.
        /// </summary>
        public string Name { get; }

        /// <summary>
        /// Gets or sets custom data for the node.
        /// </summary>
        /// <value>The custom data for the node.</value>
        public object Tag
        {
            get => _tag;
            set => SetProperty(ref _tag, value);
        }

        /// <summary>
        /// Returns a <see cref="string"/> representation of this instance.
        /// </summary>
        /// <returns>
        /// A <see cref="string"/> representation of this instance.
        /// </returns>
        public override string ToString() => $"{GetType().Name}[Name={Name}]";
    }
}