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


namespace XenAdmin.Commands
{
    internal class VMOperationWlbOptimalServerCommand : VMOperationCommand
    {
        private readonly WlbRecommendations _recommendations;

        public VMOperationWlbOptimalServerCommand(IMainWindow mainWindow, IEnumerable<SelectedItem> selection, vm_operations operation, WlbRecommendations recommendations)
            : base(mainWindow, selection, operation)
        {
            Util.ThrowIfParameterNull(recommendations, "recommendations");
            _recommendations = recommendations;
        }

        protected override Host GetHost(VM vm)
        {
            return _recommendations.GetOptimalServer(vm);
        }

        protected override bool CanRun(VM vm)
        {
            return GetHost(vm) != null;
        }

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

        public override Image MenuImage
        {
            get
            {
                return Images.StaticImages._000_ServerWlb_h32bit_16;
            }
        }
        
        protected override CommandErrorDialog GetErrorDialogCore(IDictionary<IXenObject, string> cantRunReasons)
        {
            return new CommandErrorDialog(ErrorDialogTitle, ErrorDialogText, cantRunReasons);
        }
    }
}