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using System.Collections.Generic;
using XenAPI;


namespace XenAdmin.Commands
{
    /// <summary>
    /// Shows the ExportVMDialog dialog for the selected snapshot.
    /// </summary>
    internal class ExportSnapshotAsTemplateCommand : 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 ExportSnapshotAsTemplateCommand()
        {
        }

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

        public ExportSnapshotAsTemplateCommand(IMainWindow mainWindow, VM snapshot)
            : base(mainWindow, new SelectedItem(snapshot, snapshot.Connection, null, null))
        {

        }

        private void Run(VM snapshot)
        {
            if (snapshot != null)
            {
                new ExportVMCommand(MainWindowCommandInterface, new SelectedItem(snapshot, snapshot.Connection, null, null)).Run();
            }
        }

        protected override void RunCore(SelectedItemCollection selection)
        {
            VM vm = (VM)selection[0].XenObject;
            Run(vm);
        }

        protected override bool CanRunCore(SelectedItemCollection selection)
        {
            if (selection.Count == 1)
            {
                VM vm = selection[0].XenObject as VM;

                return vm != null && vm.is_a_snapshot;
            }
            return false;
        }

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