/*
 *
 * (c) Copyright Ascensio System Limited 2010-2020
 *
 * This program is freeware. You can redistribute it and/or modify it under the terms of the GNU 
 * General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html). 
 * In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that 
 * Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
 *
 * THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
 * FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
 *
 * You can contact Ascensio System SIA by email at sales@onlyoffice.com
 *
 * The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display 
 * Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
 *
 * Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains 
 * relevant author attributions when distributing the software. If the display of the logo in its graphic 
 * form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE" 
 * in every copy of the program you distribute. 
 * Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
 *
*/


using System;
using System.Threading;

namespace ASC.Data.Backup
{
    public static class ActionInvoker
    {
        public static void Try(
            Action action,
            int maxAttempts,
            Action<Exception> onFailure = null,
            Action<Exception> onAttemptFailure = null,
            int sleepMs = 1000,
            bool isSleepExponential = true)
        {
            Try(state => action(), null, maxAttempts, onFailure, onAttemptFailure, sleepMs, isSleepExponential);
        }

        public static void Try(
            Action<object> action,
            object state,
            int maxAttempts,
            Action<Exception> onFailure = null,
            Action<Exception> onAttemptFailure = null,
            int sleepMs = 1000,
            bool isSleepExponential = true)
        {
            if (action == null)
                throw new ArgumentNullException("action");

            var countAttempts = 0;
            while (countAttempts++ < maxAttempts)
            {
                try
                {
                    action(state);
                    return;
                }
                catch (Exception error)
                {
                    if (countAttempts < maxAttempts)
                    {
                        onAttemptFailure?.Invoke(error);

                        if (sleepMs > 0)
                            Thread.Sleep(isSleepExponential ? sleepMs * countAttempts : sleepMs);
                    }
                    else
                    {
                        onFailure?.Invoke(error);
                    }
                }
            }
        }
    }
}