/* Copyright (c) Citrix Systems, Inc. 
 * All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met: 
 * 
 * *   Redistributions of source code must retain the above 
 *     copyright notice, this list of conditions and the 
 *     following disclaimer. 
 * *   Redistributions in binary form must reproduce the above 
 *     copyright notice, this list of conditions and the 
 *     following disclaimer in the documentation and/or other 
 *     materials provided with the distribution. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
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 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
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 */

using System.Collections.Generic;
using XenAdmin.Alerts;
using XenAdmin.Network;
using XenAdmin.Core;


namespace XenAdmin.Actions
{
    public class DeleteAllAlertsAction : AsyncAction
    {
        private readonly List<Alert> _alerts;

        public DeleteAllAlertsAction(List<Alert> alerts, IXenConnection connection = null)
            : base(connection, GetActionTitle(connection, alerts.Count),
                Messages.ACTION_REMOVE_ALERTS_DESCRIPTION)
        {
            _alerts = new List<Alert>(alerts);

            if (connection != null)
            {
                Pool = Helpers.GetPoolOfOne(connection);
                Host = Helpers.GetCoordinator(connection);
            }
        }

        private static string GetActionTitle(IXenConnection connection, int alertCount)
        {
            return connection == null
                ? alertCount == 1
                       ? Messages.ACTION_REMOVE_ALERTS_ON_CLIENT_TITLE_ONE
                       : string.Format(Messages.ACTION_REMOVE_ALERTS_ON_CLIENT_TITLE, alertCount)
                : alertCount == 1
                       ? string.Format(Messages.ACTION_REMOVE_ALERTS_ON_CONNECTION_TITLE_ONE, Helpers.GetName(connection))
                       : string.Format(Messages.ACTION_REMOVE_ALERTS_ON_CONNECTION_TITLE, alertCount, Helpers.GetName(connection));
        }

        protected override void Run()
        {
            LogDescriptionChanges = false;

            try
            {
                for (var i = 0; i < _alerts.Count; i++)
                {
                    Description = string.Format(Messages.ACTION_REMOVE_ALERTS_PROGRESS_DESCRIPTION, i, _alerts.Count);
                    _alerts[i].Dismiss();
                    PercentComplete = i * 100 / _alerts.Count;
                }
            }
            finally
            {
                LogDescriptionChanges = true;
            }

            Description = _alerts.Count == 1
                ? Messages.ACTION_REMOVE_ALERTS_DONE_ONE
                : string.Format(Messages.ACTION_REMOVE_ALERTS_DONE, _alerts.Count);
        }
    }
}