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 *     following disclaimer. 
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 *     copyright notice, this list of conditions and the 
 *     following disclaimer in the documentation and/or other 
 *     materials provided with the distribution. 
 * 
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using System.Collections.Generic;
using System.Linq;
using XenAdmin.Actions;
using XenAdmin.Diagnostics.Problems;
using XenAdmin.Network;


namespace XenAdmin.Wizards.PatchingWizard.PlanActions
{
    public class UnwindProblemsAction : PlanAction
    {
        private readonly List<Problem> _problems;
        private readonly IXenConnection _connection;

        public UnwindProblemsAction(List<Problem> problems, IXenConnection connection = null)
        {
            _problems = problems;
            _connection = connection;
        }

        protected override void _Run()
        {
            var msg = _connection == null
                ? Messages.REVERTING_RESOLVED_PRECHECKS
                : string.Format(Messages.REVERTING_RESOLVED_PRECHECKS_POOL, _connection.Name);

            AddProgressStep(msg);

            for (int i = 0; i < _problems.Count; i++)
            {
                var action = _problems[i].CreateUnwindChangesAction();
                if (action != null && action.Connection != null && action.Connection.IsConnected)
                    action.RunExternal(null);
                PercentComplete = i * 100 / _problems.Count;
            }
        }
    }
}