819 lines
31 KiB
C#
819 lines
31 KiB
C#
using System.Globalization;
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using FFMpegCore;
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using System.Security.Cryptography;
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using DysonNetwork.Shared.Cache;
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using DysonNetwork.Shared.Proto;
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using Google.Protobuf.WellKnownTypes;
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using Microsoft.EntityFrameworkCore;
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using Minio;
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using Minio.DataModel.Args;
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using NetVips;
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using NodaTime;
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using tusdotnet.Stores;
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using System.Linq.Expressions;
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using Microsoft.EntityFrameworkCore.Query;
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namespace DysonNetwork.Drive.Storage;
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public class FileService(
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AppDatabase db,
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IConfiguration configuration,
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TusDiskStore store,
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ILogger<FileService> logger,
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IServiceScopeFactory scopeFactory,
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ICacheService cache
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)
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{
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private const string CacheKeyPrefix = "file:";
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private static readonly TimeSpan CacheDuration = TimeSpan.FromMinutes(15);
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/// <summary>
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/// The api for getting file meta with cache,
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/// the best use case is for accessing the file data.
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///
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/// <b>This function won't load uploader's information, only keep minimal file meta</b>
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/// </summary>
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/// <param name="fileId">The id of the cloud file requested</param>
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/// <returns>The minimal file meta</returns>
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public async Task<CloudFile?> GetFileAsync(string fileId)
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{
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var cacheKey = $"{CacheKeyPrefix}{fileId}";
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var cachedFile = await cache.GetAsync<CloudFile>(cacheKey);
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if (cachedFile is not null)
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return cachedFile;
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var file = await db.Files
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.Where(f => f.Id == fileId)
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.Include(f => f.Pool)
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.FirstOrDefaultAsync();
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if (file != null)
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await cache.SetAsync(cacheKey, file, CacheDuration);
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return file;
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}
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public async Task<List<CloudFile>> GetFilesAsync(List<string> fileIds)
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{
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var cachedFiles = new Dictionary<string, CloudFile>();
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var uncachedIds = new List<string>();
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// Check cache first
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foreach (var fileId in fileIds)
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{
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var cacheKey = $"{CacheKeyPrefix}{fileId}";
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var cachedFile = await cache.GetAsync<CloudFile>(cacheKey);
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if (cachedFile != null)
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cachedFiles[fileId] = cachedFile;
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else
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uncachedIds.Add(fileId);
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}
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// Load uncached files from database
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if (uncachedIds.Count > 0)
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{
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var dbFiles = await db.Files
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.Where(f => uncachedIds.Contains(f.Id))
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.Include(f => f.Pool)
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.ToListAsync();
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// Add to cache
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foreach (var file in dbFiles)
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{
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var cacheKey = $"{CacheKeyPrefix}{file.Id}";
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await cache.SetAsync(cacheKey, file, CacheDuration);
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cachedFiles[file.Id] = file;
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}
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}
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// Preserve original order
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return fileIds
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.Select(f => cachedFiles.GetValueOrDefault(f))
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.Where(f => f != null)
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.Cast<CloudFile>()
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.ToList();
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}
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private const string TempFilePrefix = "dyn-cloudfile";
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private static readonly string[] AnimatedImageTypes =
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["image/gif", "image/apng", "image/webp", "image/avif"];
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public async Task<CloudFile> ProcessNewFileAsync(
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Account account,
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string fileId,
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string filePool,
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Stream stream,
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string fileName,
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string? contentType,
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string? encryptPassword,
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Instant? expiredAt
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)
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{
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var pool = await GetPoolAsync(Guid.Parse(filePool));
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if (pool is null) throw new InvalidOperationException("Pool not found");
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if (pool.StorageConfig.Expiration is not null && expiredAt.HasValue)
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{
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var expectedExpiration = SystemClock.Instance.GetCurrentInstant() - expiredAt.Value;
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var effectiveExpiration = pool.StorageConfig.Expiration < expectedExpiration
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? pool.StorageConfig.Expiration
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: expectedExpiration;
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expiredAt = SystemClock.Instance.GetCurrentInstant() + effectiveExpiration;
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}
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var ogFilePath = Path.GetFullPath(Path.Join(configuration.GetValue<string>("Tus:StorePath"), fileId));
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var fileSize = stream.Length;
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contentType ??= !fileName.Contains('.') ? "application/octet-stream" : MimeTypes.GetMimeType(fileName);
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if (!string.IsNullOrWhiteSpace(encryptPassword))
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{
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if (!pool.PolicyConfig.AllowEncryption)
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throw new InvalidOperationException("Encryption is not allowed in this pool");
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var encryptedPath = Path.Combine(Path.GetTempPath(), $"{fileId}.encrypted");
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FileEncryptor.EncryptFile(ogFilePath, encryptedPath, encryptPassword);
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File.Delete(ogFilePath); // Delete original unencrypted
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File.Move(encryptedPath, ogFilePath); // Replace the original one with encrypted
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contentType = "application/octet-stream";
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}
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var hash = await HashFileAsync(ogFilePath);
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var file = new CloudFile
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{
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Id = fileId,
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Name = fileName,
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MimeType = contentType,
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Size = fileSize,
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Hash = hash,
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ExpiredAt = expiredAt,
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AccountId = Guid.Parse(account.Id),
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IsEncrypted = !string.IsNullOrWhiteSpace(encryptPassword) && pool.PolicyConfig.AllowEncryption
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};
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// TODO: Enable the feature later
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// var existingFile = await db.Files.AsNoTracking().FirstOrDefaultAsync(f => f.Hash == hash);
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// file.StorageId = existingFile?.StorageId ?? file.Id;
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//
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// if (existingFile is not null)
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// {
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// file.FileMeta = existingFile.FileMeta;
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// file.HasCompression = existingFile.HasCompression;
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// file.SensitiveMarks = existingFile.SensitiveMarks;
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// file.MimeType = existingFile.MimeType;
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// file.UploadedAt = existingFile.UploadedAt;
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// file.PoolId = existingFile.PoolId;
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//
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// db.Files.Add(file);
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// await db.SaveChangesAsync();
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// // Since the file content is a duplicate, we can delete the new upload and we are done.
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// await stream.DisposeAsync();
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// await store.DeleteFileAsync(file.Id, CancellationToken.None);
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// return file;
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// }
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// Extract metadata on the current thread for a faster initial response
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if (!pool.PolicyConfig.NoMetadata)
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await ExtractMetadataAsync(file, ogFilePath, stream);
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db.Files.Add(file);
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await db.SaveChangesAsync();
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// Offload optimization (image conversion, thumbnailing) and uploading to a background task
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_ = Task.Run(() =>
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ProcessAndUploadInBackgroundAsync(file.Id, filePool, file.StorageId, contentType, ogFilePath, stream));
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return file;
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}
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/// <summary>
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/// Extracts metadata from the file based on its content type.
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/// This runs synchronously to ensure the initial database record has basic metadata.
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/// </summary>
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private async Task ExtractMetadataAsync(CloudFile file, string filePath, Stream stream)
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{
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switch (file.MimeType?.Split('/')[0])
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{
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case "image":
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try
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{
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var blurhash = BlurHashSharp.SkiaSharp.BlurHashEncoder.Encode(3, 3, filePath);
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stream.Position = 0;
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using var vipsImage = Image.NewFromStream(stream);
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var width = vipsImage.Width;
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var height = vipsImage.Height;
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var orientation = 1;
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try
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{
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orientation = vipsImage.Get("orientation") as int? ?? 1;
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}
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catch
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{
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// ignored
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}
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var meta = new Dictionary<string, object?>
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{
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["blur"] = blurhash,
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["format"] = vipsImage.Get("vips-loader") ?? "unknown",
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["width"] = width,
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["height"] = height,
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["orientation"] = orientation,
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};
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var exif = new Dictionary<string, object>();
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foreach (var field in vipsImage.GetFields())
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{
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if (IsIgnoredField(field)) continue;
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var value = vipsImage.Get(field);
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if (field.StartsWith("exif-"))
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exif[field.Replace("exif-", "")] = value;
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else
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meta[field] = value;
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}
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if (orientation is 6 or 8) (width, height) = (height, width);
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meta["exif"] = exif;
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meta["ratio"] = height != 0 ? (double)width / height : 0;
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file.FileMeta = meta;
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}
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catch (Exception ex)
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{
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file.FileMeta = new Dictionary<string, object?>();
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logger.LogError(ex, "Failed to analyze image file {FileId}", file.Id);
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}
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break;
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case "video":
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case "audio":
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try
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{
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var mediaInfo = await FFProbe.AnalyseAsync(filePath);
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file.FileMeta = new Dictionary<string, object?>
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{
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["duration"] = mediaInfo.Duration.TotalSeconds,
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["format_name"] = mediaInfo.Format.FormatName,
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["format_long_name"] = mediaInfo.Format.FormatLongName,
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["start_time"] = mediaInfo.Format.StartTime.ToString(),
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["bit_rate"] = mediaInfo.Format.BitRate.ToString(CultureInfo.InvariantCulture),
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["tags"] = mediaInfo.Format.Tags ?? new Dictionary<string, string>(),
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["chapters"] = mediaInfo.Chapters,
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// Add detailed stream information
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["video_streams"] = mediaInfo.VideoStreams.Select(s => new
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{
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s.AvgFrameRate, s.BitRate, s.CodecName, s.Duration, s.Height, s.Width, s.Language,
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s.PixelFormat, s.Rotation
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}).ToList(),
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["audio_streams"] = mediaInfo.AudioStreams.Select(s => new
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{
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s.BitRate, s.Channels, s.ChannelLayout, s.CodecName, s.Duration, s.Language,
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s.SampleRateHz
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})
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.ToList(),
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};
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if (mediaInfo.PrimaryVideoStream is not null)
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file.FileMeta["ratio"] = (double)mediaInfo.PrimaryVideoStream.Width /
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mediaInfo.PrimaryVideoStream.Height;
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}
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catch (Exception ex)
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{
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logger.LogError(ex, "Failed to analyze media file {FileId}", file.Id);
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}
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break;
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}
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}
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/// <summary>
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/// Handles file optimization (image compression, video thumbnail) and uploads to remote storage in the background.
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/// </summary>
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private async Task ProcessAndUploadInBackgroundAsync(
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string fileId,
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string remoteId,
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string storageId,
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string contentType,
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string originalFilePath,
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Stream stream
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)
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{
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var pool = await GetPoolAsync(Guid.Parse(remoteId));
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if (pool is null) return;
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await using var bgStream = stream; // Ensure stream is disposed at the end of this task
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using var scope = scopeFactory.CreateScope();
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var nfs = scope.ServiceProvider.GetRequiredService<FileService>();
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var scopedDb = scope.ServiceProvider.GetRequiredService<AppDatabase>();
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var uploads = new List<(string FilePath, string Suffix, string ContentType, bool SelfDestruct)>();
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var newMimeType = contentType;
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var hasCompression = false;
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var hasThumbnail = false;
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try
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{
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logger.LogInformation("Processing file {FileId} in background...", fileId);
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if (!pool.PolicyConfig.NoOptimization)
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switch (contentType.Split('/')[0])
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{
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case "image" when !AnimatedImageTypes.Contains(contentType):
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newMimeType = "image/webp";
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using (var vipsImage = Image.NewFromFile(originalFilePath))
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{
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var imageToWrite = vipsImage;
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if (vipsImage.Interpretation is Enums.Interpretation.Scrgb or Enums.Interpretation.Xyz)
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{
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imageToWrite = vipsImage.Colourspace(Enums.Interpretation.Srgb);
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}
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var webpPath = Path.Join(Path.GetTempPath(), $"{TempFilePrefix}#{fileId}.webp");
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imageToWrite.Autorot().WriteToFile(webpPath,
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new VOption { { "lossless", true }, { "strip", true } });
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uploads.Add((webpPath, string.Empty, newMimeType, true));
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if (imageToWrite.Width * imageToWrite.Height >= 1024 * 1024)
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{
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var scale = 1024.0 / Math.Max(imageToWrite.Width, imageToWrite.Height);
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var compressedPath =
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Path.Join(Path.GetTempPath(), $"{TempFilePrefix}#{fileId}-compressed.webp");
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using var compressedImage = imageToWrite.Resize(scale);
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compressedImage.Autorot().WriteToFile(compressedPath,
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new VOption { { "Q", 80 }, { "strip", true } });
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uploads.Add((compressedPath, ".compressed", newMimeType, true));
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hasCompression = true;
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}
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if (!ReferenceEquals(imageToWrite, vipsImage))
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{
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imageToWrite.Dispose(); // Clean up manually created colourspace-converted image
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}
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}
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break;
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case "video":
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uploads.Add((originalFilePath, string.Empty, contentType, false));
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var thumbnailPath = Path.Join(Path.GetTempPath(), $"{TempFilePrefix}#{fileId}.thumbnail.webp");
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try
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{
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var mediaInfo = await FFProbe.AnalyseAsync(originalFilePath);
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var snapshotTime = mediaInfo.Duration > TimeSpan.FromSeconds(5)
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? TimeSpan.FromSeconds(5)
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: TimeSpan.FromSeconds(1);
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await FFMpeg.SnapshotAsync(originalFilePath, thumbnailPath, captureTime: snapshotTime);
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if (File.Exists(thumbnailPath))
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{
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uploads.Add((thumbnailPath, ".thumbnail", "image/webp", true));
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hasThumbnail = true;
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}
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else
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{
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logger.LogWarning("FFMpeg did not produce thumbnail for video {FileId}", fileId);
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}
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}
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catch (Exception ex)
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{
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logger.LogError(ex, "Failed to generate thumbnail for video {FileId}", fileId);
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}
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break;
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default:
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uploads.Add((originalFilePath, string.Empty, contentType, false));
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break;
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}
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else uploads.Add((originalFilePath, string.Empty, contentType, false));
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logger.LogInformation("Optimized file {FileId}, now uploading...", fileId);
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if (uploads.Count > 0)
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{
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var destPool = Guid.Parse(remoteId!);
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var uploadTasks = uploads.Select(item =>
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nfs.UploadFileToRemoteAsync(storageId, destPool, item.FilePath, item.Suffix, item.ContentType,
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item.SelfDestruct)
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).ToList();
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await Task.WhenAll(uploadTasks);
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logger.LogInformation("Uploaded file {FileId} done!", fileId);
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var fileToUpdate = await scopedDb.Files.FirstAsync(f => f.Id == fileId);
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if (hasThumbnail) fileToUpdate.HasThumbnail = true;
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var now = SystemClock.Instance.GetCurrentInstant();
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await scopedDb.Files.Where(f => f.Id == fileId).ExecuteUpdateAsync(setter => setter
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.SetProperty(f => f.UploadedAt, now)
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.SetProperty(f => f.PoolId, destPool)
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.SetProperty(f => f.MimeType, newMimeType)
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.SetProperty(f => f.HasCompression, hasCompression)
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.SetProperty(f => f.HasThumbnail, hasThumbnail)
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);
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}
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}
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catch (Exception err)
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{
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logger.LogError(err, "Failed to process and upload {FileId}", fileId);
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}
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finally
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{
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await store.DeleteFileAsync(fileId, CancellationToken.None);
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await nfs._PurgeCacheAsync(fileId);
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}
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}
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private static async Task<string> HashFileAsync(string filePath, int chunkSize = 1024 * 1024)
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{
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using var stream = File.OpenRead(filePath);
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var fileSize = stream.Length;
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if (fileSize > chunkSize * 1024 * 5)
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return await HashFastApproximateAsync(filePath, chunkSize);
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using var md5 = MD5.Create();
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var hashBytes = await md5.ComputeHashAsync(stream);
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stream.Position = 0; // Reset stream position after reading
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return Convert.ToHexString(hashBytes).ToLowerInvariant();
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}
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private static async Task<string> HashFastApproximateAsync(string filePath, int chunkSize = 1024 * 1024)
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{
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await using var stream = File.OpenRead(filePath);
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// Scale the chunk size to kB level
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chunkSize *= 1024;
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using var md5 = MD5.Create();
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var buffer = new byte[chunkSize * 2];
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var fileLength = stream.Length;
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var bytesRead = await stream.ReadAsync(buffer.AsMemory(0, chunkSize));
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if (fileLength > chunkSize)
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{
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stream.Seek(-chunkSize, SeekOrigin.End);
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bytesRead += await stream.ReadAsync(buffer.AsMemory(chunkSize, chunkSize));
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}
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var hash = md5.ComputeHash(buffer, 0, bytesRead);
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stream.Position = 0; // Reset stream position
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return Convert.ToHexString(hash).ToLowerInvariant();
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}
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public async Task UploadFileToRemoteAsync(string storageId, Guid targetRemote, string filePath,
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string? suffix = null, string? contentType = null, bool selfDestruct = false)
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{
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await using var fileStream = File.OpenRead(filePath);
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await UploadFileToRemoteAsync(storageId, targetRemote, fileStream, suffix, contentType);
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if (selfDestruct) File.Delete(filePath);
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}
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public async Task UploadFileToRemoteAsync(string storageId, Guid targetRemote, Stream stream,
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string? suffix = null, string? contentType = null)
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{
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var dest = await GetRemoteStorageConfig(targetRemote);
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if (dest is null)
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throw new InvalidOperationException(
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$"Failed to configure client for remote destination '{targetRemote}'"
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);
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var client = CreateMinioClient(dest);
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var bucket = dest.Bucket;
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contentType ??= "application/octet-stream";
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await client.PutObjectAsync(new PutObjectArgs()
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.WithBucket(bucket)
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.WithObject(string.IsNullOrWhiteSpace(suffix) ? storageId : storageId + suffix)
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.WithStreamData(stream)
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.WithObjectSize(stream.Length)
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.WithContentType(contentType)
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);
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}
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|
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public async Task<CloudFile> UpdateFileAsync(CloudFile file, FieldMask updateMask)
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{
|
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var existingFile = await db.Files.FirstOrDefaultAsync(f => f.Id == file.Id);
|
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if (existingFile == null)
|
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{
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throw new InvalidOperationException($"File with ID {file.Id} not found.");
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}
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var updatable = new UpdatableCloudFile(existingFile);
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foreach (var path in updateMask.Paths)
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{
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switch (path)
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{
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case "name":
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updatable.Name = file.Name;
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break;
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case "description":
|
|
updatable.Description = file.Description;
|
|
break;
|
|
case "file_meta":
|
|
updatable.FileMeta = file.FileMeta;
|
|
break;
|
|
case "user_meta":
|
|
updatable.UserMeta = file.UserMeta;
|
|
break;
|
|
case "is_marked_recycle":
|
|
updatable.IsMarkedRecycle = file.IsMarkedRecycle;
|
|
break;
|
|
default:
|
|
logger.LogWarning("Attempted to update unmodifiable field: {Field}", path);
|
|
break;
|
|
}
|
|
}
|
|
|
|
await db.Files.Where(f => f.Id == file.Id).ExecuteUpdateAsync(updatable.ToSetPropertyCalls());
|
|
|
|
await _PurgeCacheAsync(file.Id);
|
|
// Re-fetch the file to return the updated state
|
|
return await db.Files.AsNoTracking().FirstAsync(f => f.Id == file.Id);
|
|
}
|
|
|
|
public async Task DeleteFileAsync(CloudFile file)
|
|
{
|
|
db.Remove(file);
|
|
await db.SaveChangesAsync();
|
|
await _PurgeCacheAsync(file.Id);
|
|
|
|
await DeleteFileDataAsync(file);
|
|
}
|
|
|
|
private async Task DeleteFileDataAsync(CloudFile file)
|
|
{
|
|
if (file.StorageId is null) return;
|
|
if (!file.PoolId.HasValue) return;
|
|
|
|
// Check if any other file with the same storage ID is referenced
|
|
var sameOriginFiles = await db.Files
|
|
.Where(f => f.StorageId == file.StorageId && f.Id != file.Id)
|
|
.Select(f => f.Id)
|
|
.ToListAsync();
|
|
|
|
// Check if any of these files are referenced
|
|
if (sameOriginFiles.Count != 0)
|
|
return;
|
|
|
|
// If any other file with the same storage ID is referenced, don't delete the actual file data
|
|
var dest = await GetRemoteStorageConfig(file.PoolId.Value);
|
|
if (dest is null) throw new InvalidOperationException($"No remote storage configured for pool {file.PoolId}");
|
|
var client = CreateMinioClient(dest);
|
|
if (client is null)
|
|
throw new InvalidOperationException(
|
|
$"Failed to configure client for remote destination '{file.PoolId}'"
|
|
);
|
|
|
|
var bucket = dest.Bucket;
|
|
var objectId = file.StorageId ?? file.Id; // Use StorageId if available, otherwise fall back to Id
|
|
|
|
await client.RemoveObjectAsync(
|
|
new RemoveObjectArgs().WithBucket(bucket).WithObject(objectId)
|
|
);
|
|
|
|
if (file.HasCompression)
|
|
{
|
|
try
|
|
{
|
|
await client.RemoveObjectAsync(
|
|
new RemoveObjectArgs().WithBucket(bucket).WithObject(objectId + ".compressed")
|
|
);
|
|
}
|
|
catch
|
|
{
|
|
// Ignore errors when deleting compressed version
|
|
logger.LogWarning("Failed to delete compressed version of file {fileId}", file.Id);
|
|
}
|
|
}
|
|
if (file.HasThumbnail)
|
|
{
|
|
try
|
|
{
|
|
await client.RemoveObjectAsync(
|
|
new RemoveObjectArgs().WithBucket(bucket).WithObject(objectId + ".thumbnail")
|
|
);
|
|
}
|
|
catch
|
|
{
|
|
// Ignore errors when deleting thumbnail
|
|
logger.LogWarning("Failed to delete thumbnail of file {fileId}", file.Id);
|
|
}
|
|
}
|
|
}
|
|
|
|
public async Task<FilePool?> GetPoolAsync(Guid destination)
|
|
{
|
|
var cacheKey = $"file:pool:{destination}";
|
|
var cachedResult = await cache.GetAsync<FilePool?>(cacheKey);
|
|
if (cachedResult != null) return cachedResult;
|
|
|
|
var pool = await db.Pools.FirstOrDefaultAsync(p => p.Id == destination);
|
|
if (pool != null)
|
|
await cache.SetAsync(cacheKey, pool);
|
|
|
|
return pool;
|
|
}
|
|
|
|
public async Task<RemoteStorageConfig?> GetRemoteStorageConfig(Guid destination)
|
|
{
|
|
var pool = await GetPoolAsync(destination);
|
|
return pool?.StorageConfig;
|
|
}
|
|
|
|
public async Task<RemoteStorageConfig?> GetRemoteStorageConfig(string destination)
|
|
{
|
|
var id = Guid.Parse(destination);
|
|
return await GetRemoteStorageConfig(id);
|
|
}
|
|
|
|
public IMinioClient? CreateMinioClient(RemoteStorageConfig dest)
|
|
{
|
|
var client = new MinioClient()
|
|
.WithEndpoint(dest.Endpoint)
|
|
.WithRegion(dest.Region)
|
|
.WithCredentials(dest.SecretId, dest.SecretKey);
|
|
if (dest.EnableSsl) client = client.WithSSL();
|
|
|
|
return client.Build();
|
|
}
|
|
|
|
// Helper method to purge the cache for a specific file
|
|
// Made internal to allow FileReferenceService to use it
|
|
internal async Task _PurgeCacheAsync(string fileId)
|
|
{
|
|
var cacheKey = $"{CacheKeyPrefix}{fileId}";
|
|
await cache.RemoveAsync(cacheKey);
|
|
}
|
|
|
|
// Helper method to purge cache for multiple files
|
|
internal async Task _PurgeCacheRangeAsync(IEnumerable<string> fileIds)
|
|
{
|
|
var tasks = fileIds.Select(_PurgeCacheAsync);
|
|
await Task.WhenAll(tasks);
|
|
}
|
|
|
|
public async Task<List<CloudFile?>> LoadFromReference(List<CloudFileReferenceObject> references)
|
|
{
|
|
var cachedFiles = new Dictionary<string, CloudFile>();
|
|
var uncachedIds = new List<string>();
|
|
|
|
// Check cache first
|
|
foreach (var reference in references)
|
|
{
|
|
var cacheKey = $"{CacheKeyPrefix}{reference.Id}";
|
|
var cachedFile = await cache.GetAsync<CloudFile>(cacheKey);
|
|
|
|
if (cachedFile != null)
|
|
{
|
|
cachedFiles[reference.Id] = cachedFile;
|
|
}
|
|
else
|
|
{
|
|
uncachedIds.Add(reference.Id);
|
|
}
|
|
}
|
|
|
|
// Load uncached files from database
|
|
if (uncachedIds.Count > 0)
|
|
{
|
|
var dbFiles = await db.Files
|
|
.Where(f => uncachedIds.Contains(f.Id))
|
|
.ToListAsync();
|
|
|
|
// Add to cache
|
|
foreach (var file in dbFiles)
|
|
{
|
|
var cacheKey = $"{CacheKeyPrefix}{file.Id}";
|
|
await cache.SetAsync(cacheKey, file, CacheDuration);
|
|
cachedFiles[file.Id] = file;
|
|
}
|
|
}
|
|
|
|
// Preserve original order
|
|
return references
|
|
.Select(r => cachedFiles.GetValueOrDefault(r.Id))
|
|
.Where(f => f != null)
|
|
.ToList();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the number of references to a file based on CloudFileReference records
|
|
/// </summary>
|
|
/// <param name="fileId">The ID of the file</param>
|
|
/// <returns>The number of references to the file</returns>
|
|
public async Task<int> GetReferenceCountAsync(string fileId)
|
|
{
|
|
return await db.FileReferences
|
|
.Where(r => r.FileId == fileId)
|
|
.CountAsync();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks if a file is referenced by any resource
|
|
/// </summary>
|
|
/// <param name="fileId">The ID of the file to check</param>
|
|
/// <returns>True if the file is referenced, false otherwise</returns>
|
|
public async Task<bool> IsReferencedAsync(string fileId)
|
|
{
|
|
return await db.FileReferences
|
|
.Where(r => r.FileId == fileId)
|
|
.AnyAsync();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Checks if an EXIF field should be ignored (e.g., GPS data).
|
|
/// </summary>
|
|
private static bool IsIgnoredField(string fieldName)
|
|
{
|
|
// Common GPS EXIF field names
|
|
var gpsFields = new[]
|
|
{
|
|
"gps-latitude", "gps-longitude", "gps-altitude", "gps-latitude-ref", "gps-longitude-ref",
|
|
"gps-altitude-ref", "gps-timestamp", "gps-datestamp", "gps-speed", "gps-speed-ref", "gps-track",
|
|
"gps-track-ref", "gps-img-direction", "gps-img-direction-ref", "gps-dest-latitude",
|
|
"gps-dest-longitude", "gps-dest-latitude-ref", "gps-dest-longitude-ref", "gps-processing-method",
|
|
"gps-area-information"
|
|
};
|
|
|
|
if (fieldName.StartsWith("exif-GPS")) return true;
|
|
if (fieldName.StartsWith("ifd3-GPS")) return true;
|
|
if (fieldName.EndsWith("-data")) return true;
|
|
return gpsFields.Any(gpsField => fieldName.StartsWith(gpsField, StringComparison.OrdinalIgnoreCase));
|
|
}
|
|
|
|
public async Task<int> DeleteAccountRecycledFilesAsync(Guid accountId)
|
|
{
|
|
var files = await db.Files
|
|
.Where(f => f.AccountId == accountId && f.IsMarkedRecycle)
|
|
.ToListAsync();
|
|
var count = files.Count;
|
|
var tasks = files.Select(DeleteFileDataAsync);
|
|
await Task.WhenAll(tasks);
|
|
var fileIds = files.Select(f => f.Id).ToList();
|
|
await _PurgeCacheRangeAsync(fileIds);
|
|
db.RemoveRange(files);
|
|
await db.SaveChangesAsync();
|
|
return count;
|
|
}
|
|
|
|
public async Task<int> DeletePoolRecycledFilesAsync(Guid poolId)
|
|
{
|
|
var files = await db.Files
|
|
.Where(f => f.PoolId == poolId && f.IsMarkedRecycle)
|
|
.ToListAsync();
|
|
var count = files.Count;
|
|
var tasks = files.Select(DeleteFileDataAsync);
|
|
await Task.WhenAll(tasks);
|
|
var fileIds = files.Select(f => f.Id).ToList();
|
|
await _PurgeCacheRangeAsync(fileIds);
|
|
db.RemoveRange(files);
|
|
await db.SaveChangesAsync();
|
|
return count;
|
|
}
|
|
|
|
public async Task<int> DeleteAllRecycledFilesAsync()
|
|
{
|
|
var files = await db.Files
|
|
.Where(f => f.IsMarkedRecycle)
|
|
.ToListAsync();
|
|
var count = files.Count;
|
|
var tasks = files.Select(DeleteFileDataAsync);
|
|
await Task.WhenAll(tasks);
|
|
var fileIds = files.Select(f => f.Id).ToList();
|
|
await _PurgeCacheRangeAsync(fileIds);
|
|
db.RemoveRange(files);
|
|
await db.SaveChangesAsync();
|
|
return count;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// A helper class to build an ExecuteUpdateAsync call for CloudFile.
|
|
/// </summary>
|
|
file class UpdatableCloudFile(CloudFile file)
|
|
{
|
|
public string Name { get; set; } = file.Name;
|
|
public string? Description { get; set; } = file.Description;
|
|
public Dictionary<string, object?>? FileMeta { get; set; } = file.FileMeta;
|
|
public Dictionary<string, object?>? UserMeta { get; set; } = file.UserMeta;
|
|
public bool IsMarkedRecycle { get; set; } = file.IsMarkedRecycle;
|
|
|
|
public Expression<Func<SetPropertyCalls<CloudFile>, SetPropertyCalls<CloudFile>>> ToSetPropertyCalls()
|
|
{
|
|
var userMeta = UserMeta ?? new Dictionary<string, object?>();
|
|
return setter => setter
|
|
.SetProperty(f => f.Name, Name)
|
|
.SetProperty(f => f.Description, Description)
|
|
.SetProperty(f => f.FileMeta, FileMeta)
|
|
.SetProperty(f => f.UserMeta, userMeta!)
|
|
.SetProperty(f => f.IsMarkedRecycle, IsMarkedRecycle);
|
|
}
|
|
} |