#region License

// Copyright 2005-2019 Paul Kohler (https://github.com/paulkohler/minisqlquery). All rights reserved.
// This source code is made available under the terms of the GNU Lesser General Public License v3.0
// https://github.com/paulkohler/minisqlquery/blob/master/LICENSE
#endregion

using System;
using System.Windows.Forms;
using MiniSqlQuery.Core;
using MiniSqlQuery.Core.Commands;

namespace MiniSqlQuery.Commands
{
    /// <summary>The save file as command.</summary>
    public class SaveFileAsCommand
        : CommandBase
    {
        /// <summary>Initializes a new instance of the <see cref="SaveFileAsCommand"/> class.</summary>
        public SaveFileAsCommand()
            : base("另存文件(&A)...")
        {
        }

        /// <summary>Execute the command.</summary>
        public override void Execute()
        {
            IEditor editor = HostWindow.Instance.ActiveMdiChild as IEditor;
            if (editor != null)
            {
                string oldFilename = editor.FileName;
                SaveFileDialog saveFileDialog = new SaveFileDialog();
                saveFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyComputer);
                saveFileDialog.Filter = editor.FileFilter;

                if (saveFileDialog.ShowDialog(HostWindow.Instance) == DialogResult.OK)
                {
                    // what if this filename covers an existing open window?
                    string newFilename = saveFileDialog.FileName;
                    editor.FileName = newFilename;
                    editor.SaveFile();

                    // register the new file and remove old if applicable
                    var mostRecentFilesService = Services.Resolve<IMostRecentFilesService>();
                    mostRecentFilesService.Register(newFilename);
                    if (oldFilename != null && oldFilename.Equals(newFilename, StringComparison.InvariantCultureIgnoreCase))
                    {
                        mostRecentFilesService.Remove(oldFilename);
                    }
                }
            }
        }
    }
}