// Copyright (C) 2024, The Duplicati Team
// https://duplicati.com, hello@duplicati.com
// 
// Permission is hereby granted, free of charge, to any person obtaining a 
// copy of this software and associated documentation files (the "Software"), 
// to deal in the Software without restriction, including without limitation 
// the rights to use, copy, modify, merge, publish, distribute, sublicense, 
// and/or sell copies of the Software, and to permit persons to whom the 
// Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in 
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
// DEALINGS IN THE SOFTWARE.

using System;
using System.Threading.Tasks;
using CoCoL;
using Duplicati.Library.Main.Operation.Common;

namespace Duplicati.Library.Main.Operation.Backup
{
    internal static class RecreateMissingIndexFiles
    {
        /// <summary>
        /// The tag used for log messages
        /// </summary>
        private static readonly string LOGTAG = Logging.Log.LogTagFromType(typeof(RecreateMissingIndexFiles));

        public static Task Run(BackupDatabase database, Options options, ITaskReader taskreader)
        {
            return AutomationExtensions.RunTask(new
            {
                UploadChannel = Channels.BackendRequest.ForWrite
            },

			async self =>
			{
				if (options.IndexfilePolicy != Options.IndexFileStrategy.None)
				{
				    foreach (var blockfile in await database.GetMissingIndexFilesAsync())
				    {
				        if (!await taskreader.ProgressAsync)
				            return;

                        Logging.Log.WriteInformationMessage(LOGTAG, "RecreateMissingIndexFile", "Re-creating missing index file for {0}", blockfile);
                        var w = await Common.IndexVolumeCreator.CreateIndexVolume(blockfile, options, database);

				        if (!await taskreader.ProgressAsync)
				            return;

				        await database.UpdateRemoteVolumeAsync(w.RemoteFilename, RemoteVolumeState.Uploading, -1, null);
				        await self.UploadChannel.WriteAsync(new IndexVolumeUploadRequest(w));
				    }
				}
			});

		}

	}
}
