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using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using XenAdmin.Actions;
using XenAdmin.Core;
using XenAdmin.Diagnostics.Checks;
using XenAdmin.Dialogs;
using XenAPI;

using XenAdmin.Actions.DR;

namespace XenAdmin.Diagnostics.Problems.VmApplianceProblem
{
    public class ExistingVmApplianceProblem: VmApplianceProblem
    {
        private readonly List<VM> vmsToDestroy;
        public ExistingVmApplianceProblem(Check check, VM_appliance vmAppliance, List<VM> vmsToDestroy)
            : base(check, vmAppliance)
        {
            this.vmsToDestroy = vmsToDestroy;
        }

        public override string Description
        {
            get
            {
                return String.Format(Messages.DR_WIZARD_PROBLEM_EXISTING_APPLIANCE, Helpers.GetPoolOfOne(vmsToDestroy[0].Connection).Name()); 
            } 
        }

        public override string HelpMessage
        {
            get { return Messages.DR_WIZARD_PROBLEM_EXISTING_APPLIANCE_HELPMESSAGE; } 
        }

        protected override AsyncAction CreateAction(out bool cancelled)
        {
            Program.AssertOnEventThread();
            string vmNames = string.Join(",", (from vm in vmsToDestroy select vm.Name()).ToArray());

            DialogResult dialogResult;
            using (var dlg = new ThreeButtonDialog(
                    new ThreeButtonDialog.Details(SystemIcons.Warning, String.Format(Messages.CONFIRM_DELETE_VMS, vmNames, vmsToDestroy[0].Connection.Name), Messages.ACTION_SHUTDOWN_AND_DESTROY_VMS_TITLE),
                    ThreeButtonDialog.ButtonYes,
                    ThreeButtonDialog.ButtonNo))
            {
                dialogResult = dlg.ShowDialog();
            }
            if (dialogResult == DialogResult.Yes)
            {
                cancelled = false;
                return new ShutdownAndDestroyVMsAction(vmsToDestroy[0].Connection, vmsToDestroy);
            }

            cancelled = true;
            return null;
        }
    }
}