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using System.Collections.Generic;
using XenAdmin.Core;
using XenAdmin.Dialogs;
using XenAPI;

namespace XenAdmin.Commands
{
    internal class VtpmCommand : Command
    {
        public VtpmCommand()
        {
        }

        public VtpmCommand(IMainWindow mainWindow, VM vm)
            : base(mainWindow, vm)
        {
        }

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

        protected override bool CanRunCore(SelectedItemCollection selection)
        {
            return selection.Count == 1 &&
                   selection[0].XenObject is VM vm &&
                   vm.IsRealVm() &&
                   !Helpers.FeatureForbidden(vm, Host.RestrictVtpm) &&
                   Helpers.XapiEqualOrGreater_22_26_0(vm.Connection) &&
                   vm.IsHVM() && vm.IsDefaultBootModeUefi();
        }

        protected override string GetCantRunReasonCore(IXenObject item)
        {
            if (item is VM vm &&
                !Helpers.FeatureForbidden(vm, Host.RestrictVtpm) &&
                Helpers.XapiEqualOrGreater_22_26_0(vm.Connection) &&
                !(vm.IsHVM() && vm.IsDefaultBootModeUefi()))
                return Messages.COMMAND_VTPM_DISABLED_NON_UEFI;

            return base.GetCantRunReasonCore(item);
        }

        protected override void RunCore(SelectedItemCollection selection)
        {
            var vm = selection[0].XenObject as VM;
            new VtpmManagementDialog(vm).ShowPerXenObject(vm, MainWindowCommandInterface.Form);
        }

        public override string ContextMenuText => MenuText;

        public override string MenuText => Messages.COMMAND_VTPM_MENU;
    }
}