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 *     following disclaimer. 
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 *     following disclaimer in the documentation and/or other 
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 * 
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using System;
using System.Collections.Generic;
using System.Windows.Forms;
using XenAdmin.Actions;
using XenAdmin.Core;
using XenAdmin.Dialogs;
using XenAPI;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Launches the Enable DR Dialog.
    /// </summary>
    internal class DRConfigureCommand : Command
    {
        /// <summary>
        /// Initializes a new instance of this Command. The parameter-less constructor is required in the derived
        /// class if it is to be attached to a ToolStrip menu item or button. It should not be used in any other scenario.
        /// </summary>
        public DRConfigureCommand()
        {
        }

        public DRConfigureCommand(IMainWindow mainWindow, IEnumerable<SelectedItem> selection)
            : base(mainWindow, selection)
        {
        }
        /// <summary>
		/// Initializes a new instance of the <see cref="DRConfigureCommand"/> class. 
        /// </summary>
        /// <param name="mainWindow">The main window interface. It can be found at MainWindow.CommandInterface.</param>
        public DRConfigureCommand(IMainWindow mainWindow)
            : base(mainWindow)
        {
        }

		public DRConfigureCommand(IMainWindow mainWindow, IXenObject selection)
            : base(mainWindow, selection)
        {
        }


		protected override void ExecuteCore(SelectedItemCollection selection)
		{
			var pool = Helpers.GetPoolOfOne(selection.FirstAsXenObject.Connection);

			if (pool != null)
			{
				if (Helpers.FeatureForbidden(pool.Connection, Host.RestrictDR))
				{
					ShowUpsellDialog(Parent);
				}
				else
				{
					using (DRConfigureDialog dlog = new DRConfigureDialog(pool))
					{
                        if (dlog.ShowDialog() == DialogResult.OK && (dlog.SRtoEnable.Count > 0 || dlog.SRtoDisable.Count > 0))
						{
							var actions = new List<AsyncAction>();

							foreach (SR sr in dlog.SRtoDisable.Values)
							{
								SR curSr = sr;
								var action = new DelegatedAsyncAction(pool.Connection,
									String.Format(Messages.ACTION_DR_DISABLING_ON, sr.Name), Messages.ACTION_DR_DISABLING, Messages.ACTION_DR_DISABLED, 
									s => SR.disable_database_replication(s, curSr.opaque_ref)) {Pool = pool};
								actions.Add(action);
							}
							
							foreach (SR sr in dlog.SRtoEnable.Values)
							{
								SR curSr = sr;
								var action = new DelegatedAsyncAction(pool.Connection, 
									String.Format(Messages.ACTION_DR_ENABLING_ON, sr.Name), Messages.ACTION_DR_ENABLING, Messages.ACTION_DR_ENABLED, 
									s => SR.enable_database_replication(s, curSr.opaque_ref)) { Pool = pool };
								actions.Add(action);
							}

							RunMultipleActions(actions, Messages.ACTION_DR_CONFIGURING, string.Empty, string.Empty, true);
						}
					}
				}
			}
		}

    	private static void ShowUpsellDialog(IWin32Window parent)
        {
            // Show upsell dialog
            UpsellDialog dlg = new UpsellDialog(Messages.UPSELL_BLURB_DR, InvisibleMessages.UPSELL_LEARNMOREURL_DR);
            dlg.ShowDialog(parent);
        }

        protected override bool CanExecuteCore(SelectedItemCollection selection)
        {
            return selection.FirstAsXenObject != null && selection.FirstAsXenObject.Connection != null && selection.FirstAsXenObject.Connection.IsConnected
				&& (selection.PoolAncestor != null || selection.HostAncestor != null); //CA-61207: this check ensures there's no cross-pool selection
        }

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