/*
The MIT License

Copyright (c) 2009-2010. Carlos Guzmán Álvarez. http://chronoswpf.codeplex.com/

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

using System;
using System.ComponentModel;
using Chronos.Presentation.Core.Services;
using Chronos.Presentation.Core.ViewModel;
using Chronos.Presentation.Core.Windows;
using NLog;
using nRoute.Components;

namespace Chronos.Presentation.ViewModel
{
    /// <summary>
    /// Base class for shortcut viewmodel implementations
    /// </summary>
    public abstract class ShortcutViewModel 
        : ClosableViewModel, IShortcutViewModel
    {
        #region · NotifyPropertyChanged Cached Instances ·

        private static readonly PropertyChangedEventArgs IconStyleChangedArgs   = CreateArgs<ShortcutViewModel>(x => x.IconStyle);
        private static readonly PropertyChangedEventArgs TargetChangedArgs      = CreateArgs<ShortcutViewModel>(x => x.Target);
        private static readonly PropertyChangedEventArgs ParametersChangedArgs  = CreateArgs<ShortcutViewModel>(x => x.Parameters);

        #endregion

        #region · Logger ·

        private static Logger Logger = LogManager.GetCurrentClassLogger();

        #endregion

        #region · Fields ·

        private string target;
        private string parameters;
        private string iconStyle;

        #region · Commands ·

        private ActionCommand openCommand;

        #endregion

        #endregion

        #region · Commands ·

        /// <summary>
        /// Gets the open command.
        /// </summary>
        /// <value>The open command.</value>
        public ActionCommand OpenCommand
        {
            get
            {
                if (this.openCommand == null)
                {
                    this.openCommand = new ActionCommand(() => OnOpen());
                }

                return this.openCommand;
            }
        }

        #endregion

        #region · Properties ·

        /// <summary>
        /// Gets or sets the icon style.
        /// </summary>
        /// <value>The icon style.</value>
        public virtual string IconStyle
        {
            get { return this.iconStyle; }
            set
            {
                if (this.iconStyle != value)
                {
                    this.iconStyle = value;
                    this.NotifyPropertyChanged(IconStyleChangedArgs);
                }
            }
        }

        /// <summary>
        /// Gets or sets the shortcut target.
        /// </summary>
        /// <value>The shortcut target.</value>
        public virtual string Target
        {
            get { return this.target; }
            set
            {
                if (this.target != value)
                {
                    this.target = value;
                    this.NotifyPropertyChanged(TargetChangedArgs);
                }
            }
        }

        /// <summary>
        /// Gets or sets the shortcut navigation parameters
        /// </summary>
        public virtual string Parameters
        {
            get { return this.parameters; }
            set
            {
                if (this.parameters != value)
                {
                    this.parameters = value;
                    this.NotifyPropertyChanged(ParametersChangedArgs);
                }
            }
        }

        #endregion

        #region · Constructors ·

        /// <summary>
        /// Initializes a new instance of the <see cref="ShortcutViewModel"/> class.
        /// </summary>
        protected ShortcutViewModel()
            : base()
        {
        }

        #endregion

        #region · Command Actions ·

        /// <summary>
        /// Called when the <see cref="OpenCommand"/>  is executed.
        /// </summary>
        protected abstract void OnOpen();

        #endregion

        #region · Overriden Methods ·

        /// <summary>
        /// Determines whether the view related to this view model can be closed.
        /// </summary>
        /// <returns>
        ///   <c>true</c> if the related view can be closed; otherwise, <c>false</c>.
        /// </returns>
        public override bool CanClose()
        {
            return true;
        }

        /// <summary>
        /// Called when the related view is being closed.
        /// </summary>
        public override void Close()
        {            
            IShowMessageViewService showMessageService = this.GetViewService<IShowMessageViewService>();

            showMessageService.ButtonSetup  = DialogButton.YesNo;
            showMessageService.Caption      = "Eliminar acceso directo";
            showMessageService.Text         =
                String.Format(
                    "¿Está seguro de que desea eliminar permanentemente este acceso directo? {0}{1}",
                        Environment.NewLine,
                            this.Title);

            if (showMessageService.ShowMessage() == DialogResult.Yes)
            {
                Logger.Debug("Eliminando acceso directo '{0}'", this.Target);

                base.Close();

                this.target         = null;
                this.parameters     = null;
                this.iconStyle      = null;
                this.openCommand    = null;
            }
        }

        #endregion
    }
}