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 * *   Redistributions of source code must retain the above 
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 *     following disclaimer. 
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 *     copyright notice, this list of conditions and the 
 *     following disclaimer in the documentation and/or other 
 *     materials provided with the distribution. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
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 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
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using System;
using System.Collections.Generic;
using XenAdmin.Network;
using System.Windows.Forms;
using System.IO;
using XenAdmin.Core;
using XenAdmin;
using XenAPI;

namespace XenAdmin.Commands
{
    /// <summary>
    /// export resource report for the pool.
    /// </summary>
    internal class ExportResourceReportCommand : Command
    {
        private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

        public ExportResourceReportCommand()
        {
        }

        public ExportResourceReportCommand(IMainWindow mainWindow, IEnumerable<SelectedItem> selection)
            : base(mainWindow, selection)
        {
        }

        public ExportResourceReportCommand(IMainWindow mainWindow, SelectedItem selection)
            : base(mainWindow, selection)
        {
        }
        
        protected override void ExecuteCore(SelectedItemCollection selection)
        {
            if (selection.FirstAsXenObject != null)
            {
                Execute(selection.FirstAsXenObject.Connection);
            }
        }

        protected override bool CanExecuteCore(SelectedItemCollection selection)
        {
            if (selection.FirstAsXenObject != null && selection.FirstAsXenObject.Connection != null && selection.FirstAsXenObject.Connection.IsConnected &&
                (selection.PoolAncestor != null || selection.HostAncestor != null)) // this check ensures there's no cross-pool 
                return !Helpers.FeatureForbidden(selection.FirstAsXenObject.Connection, Host.RestrictExportResourceData);
            return false;
        }

        public override string MenuText
        {
            get
            {
                return Messages.MAINWINDOW_EXPORT_POOL_RESOURCE_DATA;
            }
        }

        public override string ContextMenuText
        {
            get
            {
                return Messages.MAINWINDOW_EXPORT_POOL_RESOURCE_DATA;
            }
        }

        private bool Execute(IXenConnection connection)
        {
            SaveFileDialog saveFileDialog = new SaveFileDialog();
            saveFileDialog.Filter = "xls files(*.xls)|*.xls|csv files(*.csv)|*.csv";
            saveFileDialog.FilterIndex = 1;
            if (saveFileDialog.ShowDialog() == DialogResult.OK)
            {
                new XenAdmin.Actions.ExportResourceReportAction(connection, saveFileDialog.FileName, saveFileDialog.FilterIndex).RunAsync();
            }
            return true;
        }
    }
}