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using System.Collections.Generic;
using XenAPI;
using XenAdmin.Core;
using XenAdmin.Wizards.CrossPoolMigrateWizard;


namespace XenAdmin.Commands
{
    internal class CrossPoolMoveVMCommand : CrossPoolMigrateCommand
    {
        public CrossPoolMoveVMCommand(IMainWindow mainWindow, IEnumerable<SelectedItem> selection)
            : this(mainWindow, selection, null)
        { }

        public CrossPoolMoveVMCommand(IMainWindow mainWindow, IEnumerable<SelectedItem> selection, Host preSelectedHost)
            : base(mainWindow, selection, preSelectedHost)
        {
        }

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

        protected override void ExecuteCore(SelectedItemCollection selection)
        {
            var con = selection.GetConnectionOfFirstItem();

            if (Helpers.FeatureForbidden(con, Host.RestrictCrossPoolMigrate))
            {
                ShowUpsellDialog(Parent);
            }
            else
            {
                MainWindowCommandInterface.ShowPerConnectionWizard(con,
                    new CrossPoolMigrateWizard(con, selection, preSelectedHost, GetWizardMode(selection)));
            }

        }

        protected override bool CanExecute(VM vm)
        {
            return CanExecute(vm, preSelectedHost);
        }

        public static bool CanExecute(VM vm, Host preSelectedHost)
        {
            if (vm == null || vm.is_a_template || vm.Locked || vm.power_state == vm_power_state.Running)
                return false;

            return CrossPoolMigrateCommand.CanExecute(vm, preSelectedHost);
        }

        public static WizardMode GetWizardMode(SelectedItemCollection selection)
        {
            return selection != null && selection.Count > 0 && selection[0].XenObject is VM
                       && (selection[0].XenObject as VM).power_state == vm_power_state.Suspended
                           ? WizardMode.Migrate
                           : WizardMode.Move;
        }
    }
}