319 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			C#
		
	
	
	
	
	
			
		
		
	
	
			319 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			C#
		
	
	
	
	
	
| using System;
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| using System.Collections.Generic;
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| using System.IO;
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| using System.Linq;
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| using System.Net;
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| using System.Runtime.CompilerServices;
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| using System.Text;
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| using System.Threading;
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| using System.Threading.Tasks;
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| using LZ4;
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| using MareSynchronos.API;
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| using MareSynchronos.Utils;
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| using MareSynchronos.WebAPI.Utils;
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| using Microsoft.AspNetCore.SignalR.Client;
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| 
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| namespace MareSynchronos.WebAPI
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| {
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|     public partial class ApiController
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|     {
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|         private readonly HashSet<string> _verifiedUploadedHashes;
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| 
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|         private int _downloadId = 0;
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|         public void CancelUpload()
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|         {
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|             if (_uploadCancellationTokenSource != null)
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|             {
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|                 Logger.Debug("Cancelling upload");
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|                 _uploadCancellationTokenSource?.Cancel();
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|                 _mareHub!.SendAsync(Api.SendFileAbortUpload);
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|                 CurrentUploads.Clear();
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|             }
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|         }
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| 
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|         public async Task DeleteAllMyFiles()
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|         {
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|             await _mareHub!.SendAsync(Api.SendFileDeleteAllFiles);
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|         }
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| 
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|         private async Task<string> DownloadFile(int downloadId, string hash, Uri downloadUri, CancellationToken ct)
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|         {
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|             using WebClient wc = new();
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|             wc.Headers.Add("Authorization", SecretKey);
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|             DownloadProgressChangedEventHandler progChanged = (s, e) =>
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|             {
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|                 try
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|                 {
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|                     CurrentDownloads[downloadId].Single(f => f.Hash == hash).Transferred = e.BytesReceived;
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|                 }
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|                 catch (Exception ex)
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|                 {
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|                     Logger.Warn("Could not set download progress for " + hash);
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|                     Logger.Warn(ex.Message);
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|                     Logger.Warn(ex.StackTrace ?? string.Empty);
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|                 }
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|             };
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|             wc.DownloadProgressChanged += progChanged;
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| 
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|             string fileName = Path.GetTempFileName();
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| 
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|             ct.Register(wc.CancelAsync);
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| 
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|             try
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|             {
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|                 await wc.DownloadFileTaskAsync(downloadUri, fileName);
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|             }
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|             catch { }
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| 
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|             CurrentDownloads[downloadId].Single(f => f.Hash == hash).Transferred = CurrentDownloads[downloadId].Single(f => f.Hash == hash).Total;
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| 
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|             wc.DownloadProgressChanged -= progChanged;
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|             return fileName;
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|         }
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| 
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|         public int GetDownloadId() => _downloadId++;
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| 
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|         public async Task DownloadFiles(int currentDownloadId, List<FileReplacementDto> fileReplacementDto, CancellationToken ct)
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|         {
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|             DownloadStarted?.Invoke();
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|             try
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|             {
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|                 await DownloadFilesInternal(currentDownloadId, fileReplacementDto, ct);
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|             }
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|             catch
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|             {
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|                 CancelDownload(currentDownloadId);
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|             }
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|             finally
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|             {
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|                 DownloadFinished?.Invoke();
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|             }
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|         }
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| 
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|         private async Task DownloadFilesInternal(int currentDownloadId, List<FileReplacementDto> fileReplacementDto, CancellationToken ct)
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|         {
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|             Logger.Debug("Downloading files (Download ID " + currentDownloadId + ")");
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| 
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|             List<DownloadFileDto> downloadFileInfoFromService = new List<DownloadFileDto>();
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|             downloadFileInfoFromService.AddRange(await _mareHub!.InvokeAsync<List<DownloadFileDto>>(Api.InvokeGetFilesSizes, fileReplacementDto.Select(f => f.Hash).ToList(), ct));
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| 
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|             Logger.Debug("Files with size 0 or less: " + string.Join(", ", downloadFileInfoFromService.Where(f => f.Size <= 0).Select(f => f.Hash)));
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| 
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|             CurrentDownloads[currentDownloadId] = downloadFileInfoFromService.Distinct().Select(d => new DownloadFileTransfer(d))
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|                 .Where(d => d.CanBeTransferred).ToList();
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| 
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|             foreach (var dto in downloadFileInfoFromService.Where(c => c.IsForbidden))
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|             {
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|                 if (ForbiddenTransfers.All(f => f.Hash != dto.Hash))
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|                 {
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|                     ForbiddenTransfers.Add(new DownloadFileTransfer(dto));
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|                 }
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|             }
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| 
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|             await Parallel.ForEachAsync(CurrentDownloads[currentDownloadId].Where(f => f.CanBeTransferred), new ParallelOptions()
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|             {
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|                 MaxDegreeOfParallelism = 5,
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|                 CancellationToken = ct
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|             },
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|             async (file, token) =>
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|             {
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|                 var hash = file.Hash;
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|                 var tempFile = await DownloadFile(currentDownloadId, file.Hash, file.DownloadUri, token);
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|                 if (token.IsCancellationRequested)
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|                 {
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|                     File.Delete(tempFile);
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|                     Logger.Debug("Detected cancellation, removing " + currentDownloadId);
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|                     DownloadFinished?.Invoke();
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|                     CancelDownload(currentDownloadId);
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|                     return;
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|                 }
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| 
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|                 var tempFileData = await File.ReadAllBytesAsync(tempFile, token);
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|                 var extractedFile = LZ4Codec.Unwrap(tempFileData);
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|                 File.Delete(tempFile);
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|                 var filePath = Path.Combine(_pluginConfiguration.CacheFolder, file.Hash);
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|                 await File.WriteAllBytesAsync(filePath, extractedFile, token);
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|                 var fi = new FileInfo(filePath);
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|                 Func<DateTime> RandomDayFunc()
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|                 {
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|                     DateTime start = new DateTime(1995, 1, 1);
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|                     Random gen = new Random();
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|                     int range = (DateTime.Today - start).Days;
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|                     return () => start.AddDays(gen.Next(range));
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|                 }
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| 
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|                 fi.CreationTime = RandomDayFunc().Invoke();
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|                 fi.LastAccessTime = RandomDayFunc().Invoke();
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|                 fi.LastWriteTime = RandomDayFunc().Invoke();
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|                 try
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|                 {
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|                     _ = _fileDbManager.CreateCacheEntry(filePath);
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|                 }
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|                 catch (Exception ex)
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|                 {
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|                     Logger.Warn("Issue adding file to the DB");
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|                     Logger.Warn(ex.Message);
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|                     Logger.Warn(ex.StackTrace);
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|                 }
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|             });
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| 
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|             Logger.Debug("Download complete, removing " + currentDownloadId);
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|             CancelDownload(currentDownloadId);
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|         }
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| 
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|         public async Task PushCharacterData(CharacterCacheDto character, List<string> visibleCharacterIds)
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|         {
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|             if (!IsConnected || SecretKey == "-") return;
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|             Logger.Debug("Sending Character data to service " + ApiUri);
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| 
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|             CancelUpload();
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|             _uploadCancellationTokenSource = new CancellationTokenSource();
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|             var uploadToken = _uploadCancellationTokenSource.Token;
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|             Logger.Verbose("New Token Created");
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| 
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|             List<string> unverifiedUploadHashes = new();
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|             foreach (var item in character.FileReplacements.SelectMany(c => c.Value.Where(f => string.IsNullOrEmpty(f.FileSwapPath)).Select(v => v.Hash).Distinct()).Distinct().ToList())
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|             {
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|                 if (!_verifiedUploadedHashes.Contains(item))
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|                 {
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|                     unverifiedUploadHashes.Add(item);
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|                 }
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|             }
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| 
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|             if (unverifiedUploadHashes.Any())
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|             {
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|                 Logger.Debug("Verifying " + unverifiedUploadHashes.Count + " files");
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|                 var filesToUpload = await _mareHub!.InvokeAsync<List<UploadFileDto>>(Api.InvokeFileSendFiles, unverifiedUploadHashes, uploadToken);
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| 
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|                 foreach (var file in filesToUpload.Where(f => !f.IsForbidden))
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|                 {
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|                     try
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|                     {
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|                         CurrentUploads.Add(new UploadFileTransfer(file)
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|                         {
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|                             Total = new FileInfo(_fileDbManager.GetFileCacheByHash(file.Hash)!.ResolvedFilepath).Length
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|                         });
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|                     }
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|                     catch (Exception ex)
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|                     {
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|                         Logger.Warn("Tried to request file " + file.Hash + " but file was not present");
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|                         Logger.Warn(ex.StackTrace!);
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|                     }
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|                 }
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| 
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|                 foreach (var file in filesToUpload.Where(c => c.IsForbidden))
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|                 {
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|                     if (ForbiddenTransfers.All(f => f.Hash != file.Hash))
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|                     {
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|                         ForbiddenTransfers.Add(new UploadFileTransfer(file)
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|                         {
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|                             LocalFile = _fileDbManager.GetFileCacheByHash(file.Hash)?.ResolvedFilepath ?? string.Empty
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|                         });
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|                     }
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|                 }
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| 
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|                 var totalSize = CurrentUploads.Sum(c => c.Total);
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|                 Logger.Debug("Compressing and uploading files");
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|                 foreach (var file in CurrentUploads.Where(f => f.CanBeTransferred && !f.IsTransferred).ToList())
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|                 {
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|                     Logger.Debug("Compressing and uploading " + file);
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|                     var data = await GetCompressedFileData(file.Hash, uploadToken);
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|                     CurrentUploads.Single(e => e.Hash == data.Item1).Total = data.Item2.Length;
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|                     await UploadFile(data.Item2, file.Hash, uploadToken);
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|                     if (!uploadToken.IsCancellationRequested) continue;
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|                     Logger.Warn("Cancel in filesToUpload loop detected");
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|                     CurrentUploads.Clear();
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|                     break;
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|                 }
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| 
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|                 if (CurrentUploads.Any())
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|                 {
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|                     var compressedSize = CurrentUploads.Sum(c => c.Total);
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|                     Logger.Debug($"Compressed {totalSize} to {compressedSize} ({(compressedSize / (double)totalSize):P2})");
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|                 }
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| 
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|                 Logger.Debug("Upload tasks complete, waiting for server to confirm");
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|                 var anyUploadsOpen = await _mareHub!.InvokeAsync<bool>(Api.InvokeFileIsUploadFinished, uploadToken);
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|                 Logger.Debug("Uploads open: " + anyUploadsOpen);
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|                 while (anyUploadsOpen && !uploadToken.IsCancellationRequested)
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|                 {
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|                     anyUploadsOpen = await _mareHub!.InvokeAsync<bool>(Api.InvokeFileIsUploadFinished, uploadToken);
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|                     await Task.Delay(TimeSpan.FromSeconds(0.5), uploadToken);
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|                     Logger.Debug("Waiting for uploads to finish");
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|                 }
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| 
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|                 foreach (var item in unverifiedUploadHashes)
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|                 {
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|                     _verifiedUploadedHashes.Add(item);
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|                 }
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| 
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|                 CurrentUploads.Clear();
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|             }
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|             else
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|             {
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|                 Logger.Debug("All files already verified");
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|             }
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| 
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|             if (!uploadToken.IsCancellationRequested)
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|             {
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|                 Logger.Info("Pushing character data for " + character.GetHashCode() + " to " + string.Join(", ", visibleCharacterIds));
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|                 StringBuilder sb = new StringBuilder();
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|                 foreach (var item in character.FileReplacements)
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|                 {
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|                     sb.AppendLine($"FileReplacements for {item.Key}: {item.Value.Count}");
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|                 }
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|                 foreach (var item in character.GlamourerData)
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|                 {
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|                     sb.AppendLine($"GlamourerData for {item.Key}: {!string.IsNullOrEmpty(item.Value)}");
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|                 }
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|                 Logger.Debug("Chara data contained: " + Environment.NewLine + sb.ToString());
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|                 await _mareHub!.InvokeAsync(Api.InvokeUserPushCharacterDataToVisibleClients, character, visibleCharacterIds, uploadToken);
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|             }
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|             else
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|             {
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|                 Logger.Warn("=== Upload operation was cancelled ===");
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|             }
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| 
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|             Logger.Verbose("Upload complete for " + character.GetHashCode());
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|             _uploadCancellationTokenSource = null;
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|         }
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| 
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|         private async Task<(string, byte[])> GetCompressedFileData(string fileHash, CancellationToken uploadToken)
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|         {
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|             var fileCache = _fileDbManager.GetFileCacheByHash(fileHash)!.ResolvedFilepath;
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|             return (fileHash, LZ4Codec.WrapHC(await File.ReadAllBytesAsync(fileCache, uploadToken), 0,
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|                 (int)new FileInfo(fileCache).Length));
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|         }
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| 
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|         private async Task UploadFile(byte[] compressedFile, string fileHash, CancellationToken uploadToken)
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|         {
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|             if (uploadToken.IsCancellationRequested) return;
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| 
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|             async IAsyncEnumerable<byte[]> AsyncFileData([EnumeratorCancellation] CancellationToken token)
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|             {
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|                 var chunkSize = 1024 * 512; // 512kb
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|                 using var ms = new MemoryStream(compressedFile);
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|                 var buffer = new byte[chunkSize];
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|                 int bytesRead;
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|                 while ((bytesRead = await ms.ReadAsync(buffer, 0, chunkSize, token)) > 0 && !token.IsCancellationRequested)
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|                 {
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|                     CurrentUploads.Single(f => f.Hash == fileHash).Transferred += bytesRead;
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|                     token.ThrowIfCancellationRequested();
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|                     yield return bytesRead == chunkSize ? buffer.ToArray() : buffer.Take(bytesRead).ToArray();
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|                 }
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|             }
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| 
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|             await _mareHub!.SendAsync(Api.SendFileUploadFileStreamAsync, fileHash, AsyncFileData(uploadToken), uploadToken);
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|         }
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| 
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|         public void CancelDownload(int downloadId)
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|         {
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|             while (CurrentDownloads.ContainsKey(downloadId))
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|             {
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|                 CurrentDownloads.TryRemove(downloadId, out _);
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|             }
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|         }
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|     }
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| 
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| }
 | 
