using System;
using System.Collections.ObjectModel;
using System.Windows.Markup;
using System.Windows.Media;
using ActiproSoftware.Windows.Input;
using Plume.WPF.Mvvm;

namespace JD.AssetBrowser.Model
{
    /// <summary>
    /// Provides a common implementation of a tree node model.
    /// </summary>
    [ContentProperty("Children")]
    public class TreeNodeModel : BindableBase
    {
        private ObservableCollection<TreeNodeModel> children = new ObservableCollection<TreeNodeModel>();
        private DelegateCommand<object> _defaultActionCommand;
        private ImageSource _imageSource;
        private bool _isDraggable = true;
        private bool _isEditable;
        private bool _isEditing;
        private bool _isExpanded;
        private bool _isLoading;
        private bool _isSelectable = true;
        private bool _isSelected;
        private string _name;
        private object _tag;

        /// <summary>
        /// Gets the collection of child nodes.
        /// </summary>
        /// <value>The collection of child nodes.</value>
        public ObservableCollection<TreeNodeModel> Children
        {
            get { return children ?? (children = new ObservableCollection<TreeNodeModel>()); }
        }

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

        /// <summary>
        /// Gets or sets the <see cref="ImageSource"/> for an image to display on the node.
        /// </summary>
        /// <value>The <see cref="ImageSource"/> for an image to display on the node.</value>
        public ImageSource ImageSource
        {
            get { return _imageSource; }
            set { SetProperty(ref _imageSource, value); }
        }

        /// <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 { return _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 { return _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 { return _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 { return _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 { return _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 { return _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 { return _isSelected; }
            set { SetProperty(ref _isSelected, value); }
        }

        /// <summary>
        /// Gets or sets the name of the node.
        /// </summary>
        /// <value>The name of the node.</value>
        public string Name
        {
            get { return _name; }
            set { SetProperty(ref _name, value); }
        }

        /// <summary>
        /// Gets or sets custom data for the node.
        /// </summary>
        /// <value>The custom data for the node.</value>
        public object Tag
        {
            get { return _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()
        {
            return $"{GetType().Name}[Name={Name}]";
        }

    }
}