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using System.Drawing;
using System.Linq;
using XenAdmin.Core;
using XenAdmin.Wizards.PatchingWizard;
using XenAPI;


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

        public InstallNewUpdateCommand(IMainWindow mainWindow)
            : base(mainWindow)
        {
        }

        protected override void RunCore(SelectedItemCollection selection)
        {
            MainWindowCommandInterface.ShowForm(typeof(PatchingWizard));
        }

        protected override bool CanRunCore(SelectedItemCollection selection)
        {
            return ConnectionsManager.XenConnectionsCopy.Any(c => c.IsConnected && Helpers.Post82X(c));
        }

        protected override string GetCantRunReasonCore(IXenObject item)
        {
            var connected = ConnectionsManager.XenConnectionsCopy.Where(c => c.IsConnected).ToList();

            if (connected.Count > 0 && connected.All(c => !Helpers.Post82X(c)))
                return string.Format(Messages.INSTALL_PENDING_UPDATES_DISABLED_REASON,
                    BrandManager.BrandConsole, Program.VersionText, BrandManager.ProductVersion821);

            return base.GetCantRunReasonCore(item);
        }

        public override Image ContextMenuImage => Images.StaticImages._000_HostUnpatched_h32bit_16;

        public override string ContextMenuText => Messages.INSTALL_PENDING_UPDATES;
    }
}