OF DL.Core/Models/Config/Config.cs

@@ -31,32 +31,32 @@ public class Config : IFileNameFormatConfig
 
     [ToggleableConfig] public bool DownloadAudios { get; set; } = true;
 
-    [ToggleableConfig] public bool IncludeExpiredSubscriptions { get; set; } = false;
+    [ToggleableConfig] public bool IncludeExpiredSubscriptions { get; set; }
 
-    [ToggleableConfig] public bool IncludeRestrictedSubscriptions { get; set; } = false;
+    [ToggleableConfig] public bool IncludeRestrictedSubscriptions { get; set; }
 
-    [ToggleableConfig] public bool SkipAds { get; set; } = false;
+    [ToggleableConfig] public bool SkipAds { get; set; }
 
     public string? DownloadPath { get; set; } = "";
 
-    [ToggleableConfig] public bool RenameExistingFilesWhenCustomFormatIsSelected { get; set; } = false;
+    [ToggleableConfig] public bool RenameExistingFilesWhenCustomFormatIsSelected { get; set; }
 
     public int? Timeout { get; set; } = -1;
 
-    [ToggleableConfig] public bool FolderPerPaidPost { get; set; } = false;
+    [ToggleableConfig] public bool FolderPerPaidPost { get; set; }
 
-    [ToggleableConfig] public bool FolderPerPost { get; set; } = false;
+    [ToggleableConfig] public bool FolderPerPost { get; set; }
 
-    [ToggleableConfig] public bool FolderPerPaidMessage { get; set; } = false;
+    [ToggleableConfig] public bool FolderPerPaidMessage { get; set; }
 
-    [ToggleableConfig] public bool FolderPerMessage { get; set; } = false;
+    [ToggleableConfig] public bool FolderPerMessage { get; set; }
 
-    [ToggleableConfig] public bool LimitDownloadRate { get; set; } = false;
+    [ToggleableConfig] public bool LimitDownloadRate { get; set; }
 
     public int DownloadLimitInMbPerSec { get; set; } = 4;
 
     // Indicates if you want to download only on specific dates.
-    [ToggleableConfig] public bool DownloadOnlySpecificDates { get; set; } = false;
+    [ToggleableConfig] public bool DownloadOnlySpecificDates { get; set; }
 
     // This enum will define if we want data from before or after the CustomDate.
     [JsonConverter(typeof(StringEnumConverter))]
@@ -66,37 +66,37 @@ public class Config : IFileNameFormatConfig
     [JsonConverter(typeof(ShortDateConverter))]
     public DateTime? CustomDate { get; set; } = null;
 
-    [ToggleableConfig] public bool ShowScrapeSize { get; set; } = false;
+    [ToggleableConfig] public bool ShowScrapeSize { get; set; }
 
-    [ToggleableConfig] public bool DownloadPostsIncrementally { get; set; } = false;
+    [ToggleableConfig] public bool DownloadPostsIncrementally { get; set; }
 
-    public bool NonInteractiveMode { get; set; } = false;
+    public bool NonInteractiveMode { get; set; }
     public string NonInteractiveModeListName { get; set; } = "";
 
-    [ToggleableConfig] public bool NonInteractiveModePurchasedTab { get; set; } = false;
+    [ToggleableConfig] public bool NonInteractiveModePurchasedTab { get; set; }
 
     public string? FFmpegPath { get; set; } = "";
 
-    [ToggleableConfig] public bool BypassContentForCreatorsWhoNoLongerExist { get; set; } = false;
+    [ToggleableConfig] public bool BypassContentForCreatorsWhoNoLongerExist { get; set; }
 
     public Dictionary<string, CreatorConfig> CreatorConfigs { get; set; } = new();
 
-    [ToggleableConfig] public bool DownloadDuplicatedMedia { get; set; } = false;
+    [ToggleableConfig] public bool DownloadDuplicatedMedia { get; set; }
 
     public string IgnoredUsersListName { get; set; } = "";
 
     [JsonConverter(typeof(StringEnumConverter))]
     public LoggingLevel LoggingLevel { get; set; } = LoggingLevel.Error;
 
-    [ToggleableConfig] public bool IgnoreOwnMessages { get; set; } = false;
+    [ToggleableConfig] public bool IgnoreOwnMessages { get; set; }
 
-    [ToggleableConfig] public bool DisableBrowserAuth { get; set; } = false;
+    [ToggleableConfig] public bool DisableBrowserAuth { get; set; }
 
     [JsonConverter(typeof(StringEnumConverter))]
     public VideoResolution DownloadVideoResolution { get; set; } = VideoResolution.source;
 
     // When enabled, post/message text is stored as-is without XML stripping.
-    [ToggleableConfig] public bool DisableTextSanitization { get; set; } = false;
+    [ToggleableConfig] public bool DisableTextSanitization { get; set; }
 
     public string? PaidPostFileNameFormat { get; set; } = "";
     public string? PostFileNameFormat { get; set; } = "";

OF DL.Core/Services/StartupService.cs

@@ -131,6 +131,7 @@ public class StartupService(IConfigService configService, IAuthService authServi
             Log.Error("Error checking latest release on GitHub. {Message}", e.Message);
         }
 #else
+        await Task.CompletedTask;
         Log.Debug("Running in Debug/Local mode. Version check skipped.");
         result.IsUpToDate = true;
 #endif
@@ -221,12 +222,7 @@ public class StartupService(IConfigService configService, IAuthService authServi
     private static bool ValidateFilePath(string path)
     {
         char[] invalidChars = Path.GetInvalidPathChars();
-        if (path.Any(c => invalidChars.Contains(c)))
+        return !path.Any(c => invalidChars.Contains(c)) && File.Exists(path);
-        {
-            return false;
-        }
-
-        return File.Exists(path);
     }
 
     private static string? GetFullPath(string filename)

OF DL.Core/Utils/XmlUtils.cs

@@ -4,8 +4,8 @@ namespace OF_DL.Utils;
 
 internal static class XmlUtils
 {
-    // When true, return original text without parsing/stripping.
+    // When true, return the original text without parsing/stripping.
-    public static bool Passthrough { get; set; } = false;
+    public static bool Passthrough { get; set; }
 
     public static string EvaluateInnerText(string xmlValue)
     {

OF DL.Tests/Services/ApiServiceTests.cs

@@ -0,0 +1,151 @@
+using System.Reflection;
+using System.Security.Cryptography;
+using System.Text;
+using OF_DL.Models;
+using OF_DL.Models.Config;
+using OF_DL.Models.OfdlApi;
+using OF_DL.Services;
+
+namespace OF_DL.Tests.Services;
+
+public class ApiServiceTests
+{
+    [Fact]
+    public void GetDynamicHeaders_ReturnsSignedHeaders()
+    {
+        FakeAuthService authService = new()
+        {
+            CurrentAuth = new Auth
+            {
+                UserId = "123", UserAgent = "unit-test-agent", XBc = "xbc-token", Cookie = "auth_cookie=abc;"
+            }
+        };
+        ApiService service = CreateService(authService);
+        DynamicRules rules = new()
+        {
+            AppToken = "app-token",
+            StaticParam = "static",
+            Prefix = "prefix",
+            Suffix = "suffix",
+            ChecksumConstant = 7,
+            ChecksumIndexes = [0, 5, 10, 15]
+        };
+
+        using DynamicRulesCacheScope _ = new(rules);
+
+        Dictionary<string, string> headers = service.GetDynamicHeaders("/api2/v2/users", "?limit=1");
+
+        Assert.Equal("application/json, text/plain", headers["accept"]);
+        Assert.Equal("app-token", headers["app-token"]);
+        Assert.Equal("auth_cookie=abc;", headers["cookie"]);
+        Assert.Equal("unit-test-agent", headers["user-agent"]);
+        Assert.Equal("xbc-token", headers["x-bc"]);
+        Assert.Equal("123", headers["user-id"]);
+        Assert.True(long.TryParse(headers["time"], out long timestamp));
+
+        string expectedSign = BuildSign(rules, timestamp, "/api2/v2/users?limit=1", "123");
+        Assert.Equal(expectedSign, headers["sign"]);
+    }
+
+    [Fact]
+    public void GetDynamicHeaders_ThrowsWhenRulesInvalid()
+    {
+        FakeAuthService authService = new()
+        {
+            CurrentAuth = new Auth
+            {
+                UserId = "123", UserAgent = "unit-test-agent", XBc = "xbc-token", Cookie = "auth_cookie=abc;"
+            }
+        };
+        ApiService service = CreateService(authService);
+        DynamicRules rules = new()
+        {
+            AppToken = null,
+            StaticParam = "static",
+            Prefix = null,
+            Suffix = "suffix",
+            ChecksumConstant = null,
+            ChecksumIndexes = []
+        };
+
+        using DynamicRulesCacheScope _ = new(rules);
+
+        Exception ex = Assert.Throws<Exception>(() => service.GetDynamicHeaders("/api2/v2/users", "?limit=1"));
+        Assert.Contains("Invalid dynamic rules", ex.Message);
+    }
+
+    [Fact]
+    public void GetDynamicHeaders_ThrowsWhenAuthMissingFields()
+    {
+        FakeAuthService authService = new()
+        {
+            CurrentAuth = new Auth
+            {
+                UserId = "123", UserAgent = "unit-test-agent", XBc = "xbc-token", Cookie = null
+            }
+        };
+        ApiService service = CreateService(authService);
+        DynamicRules rules = new()
+        {
+            AppToken = "app-token",
+            StaticParam = "static",
+            Prefix = "prefix",
+            Suffix = "suffix",
+            ChecksumConstant = 1,
+            ChecksumIndexes = [0]
+        };
+
+        using DynamicRulesCacheScope _ = new(rules);
+
+        Exception ex = Assert.Throws<Exception>(() => service.GetDynamicHeaders("/api2/v2/users", "?limit=1"));
+        Assert.Contains("Auth service is missing required fields", ex.Message);
+    }
+
+    private static ApiService CreateService(FakeAuthService authService) =>
+        new(authService, new FakeConfigService(new Config()), new FakeDbService());
+
+    private static string BuildSign(DynamicRules rules, long timestamp, string pathWithQuery, string userId)
+    {
+        string input = $"{rules.StaticParam}\n{timestamp}\n{pathWithQuery}\n{userId}";
+        byte[] hashBytes = SHA1.HashData(Encoding.UTF8.GetBytes(input));
+        string hashString = BitConverter.ToString(hashBytes).Replace("-", "").ToLowerInvariant();
+
+        Assert.NotNull(rules.ChecksumConstant);
+
+        int checksum = rules.ChecksumIndexes.Aggregate(0, (current, index) => current + hashString[index]) +
+                       rules.ChecksumConstant.Value;
+        string checksumHex = checksum.ToString("X").ToLowerInvariant();
+
+        return $"{rules.Prefix}:{hashString}:{checksumHex}:{rules.Suffix}";
+    }
+
+    private sealed class DynamicRulesCacheScope : IDisposable
+    {
+        private static readonly FieldInfo s_rulesField =
+            typeof(ApiService).GetField("s_cachedDynamicRules", BindingFlags.NonPublic | BindingFlags.Static) ??
+            throw new InvalidOperationException("Unable to access cached rules field.");
+
+        private static readonly FieldInfo s_expirationField =
+            typeof(ApiService).GetField("s_cachedDynamicRulesExpiration",
+                BindingFlags.NonPublic | BindingFlags.Static) ??
+            throw new InvalidOperationException("Unable to access cached rules expiration field.");
+
+        private readonly object? _priorRules;
+        private readonly DateTime? _priorExpiration;
+
+        public DynamicRulesCacheScope(DynamicRules rules)
+        {
+            _priorRules = s_rulesField.GetValue(null);
+            _priorExpiration = (DateTime?)s_expirationField.GetValue(null);
+
+            s_rulesField.SetValue(null, rules);
+            s_expirationField.SetValue(null, DateTime.UtcNow.AddHours(1));
+        }
+
+        public void Dispose()
+        {
+            s_rulesField.SetValue(null, _priorRules);
+            s_expirationField.SetValue(null, _priorExpiration);
+        }
+    }
+}

OF DL.Tests/Services/DownloadServiceTests.cs

@@ -0,0 +1,159 @@
+using OF_DL.Models.Config;
+using OF_DL.Models.Downloads;
+using OF_DL.Services;
+
+namespace OF_DL.Tests.Services;
+
+public class DownloadServiceTests
+{
+    [Fact]
+    public async Task ProcessMediaDownload_RenamesServerFileAndUpdatesDb_WhenNotDownloadedButServerFileExists()
+    {
+        using TempFolder temp = new();
+        string folder = NormalizeFolder(Path.Combine(temp.Path, "creator"));
+        string path = "/Posts/Free";
+        string url = "https://example.com/image.jpg";
+        string serverFilename = "server";
+        string resolvedFilename = "custom";
+        string serverFilePath = $"{folder}{path}/{serverFilename}.jpg";
+        Directory.CreateDirectory(Path.GetDirectoryName(serverFilePath) ?? throw new InvalidOperationException());
+        await File.WriteAllTextAsync(serverFilePath, "abc");
+
+        FakeDbService dbService = new() { CheckDownloadedResult = false };
+        FakeConfigService configService = new(new Config { ShowScrapeSize = false });
+        DownloadService service = CreateService(configService, dbService);
+        ProgressRecorder progress = new();
+
+        bool isNew = await service.ProcessMediaDownload(folder, 1, "Posts", url, path, serverFilename,
+            resolvedFilename, ".jpg", progress);
+
+        string renamedPath = $"{folder}{path}/{resolvedFilename}.jpg";
+        Assert.False(isNew);
+        Assert.False(File.Exists(serverFilePath));
+        Assert.True(File.Exists(renamedPath));
+        Assert.NotNull(dbService.LastUpdateMedia);
+        Assert.Equal($"{folder}{path}", dbService.LastUpdateMedia.Value.directory);
+        Assert.Equal("custom.jpg", dbService.LastUpdateMedia.Value.filename);
+        Assert.Equal(new FileInfo(renamedPath).Length, dbService.LastUpdateMedia.Value.size);
+        Assert.Equal(1, progress.Total);
+    }
+
+    [Fact]
+    public async Task ProcessMediaDownload_RenamesExistingFile_WhenDownloadedAndCustomFormatEnabled()
+    {
+        using TempFolder temp = new();
+        string folder = NormalizeFolder(Path.Combine(temp.Path, "creator"));
+        string path = "/Posts/Free";
+        string url = "https://example.com/image.jpg";
+        string serverFilename = "server";
+        string resolvedFilename = "custom";
+        string serverFilePath = $"{folder}{path}/{serverFilename}.jpg";
+        Directory.CreateDirectory(Path.GetDirectoryName(serverFilePath) ?? throw new InvalidOperationException());
+        await File.WriteAllTextAsync(serverFilePath, "abc");
+
+        FakeDbService dbService = new() { CheckDownloadedResult = true, StoredFileSize = 123 };
+        FakeConfigService configService =
+            new(new Config { ShowScrapeSize = false, RenameExistingFilesWhenCustomFormatIsSelected = true });
+        DownloadService service = CreateService(configService, dbService);
+        ProgressRecorder progress = new();
+
+        bool isNew = await service.ProcessMediaDownload(folder, 1, "Posts", url, path, serverFilename,
+            resolvedFilename, ".jpg", progress);
+
+        string renamedPath = $"{folder}{path}/{resolvedFilename}.jpg";
+        Assert.False(isNew);
+        Assert.False(File.Exists(serverFilePath));
+        Assert.True(File.Exists(renamedPath));
+        Assert.NotNull(dbService.LastUpdateMedia);
+        Assert.Equal("custom.jpg", dbService.LastUpdateMedia.Value.filename);
+        Assert.Equal(123, dbService.LastUpdateMedia.Value.size);
+        Assert.Equal(1, progress.Total);
+    }
+
+    [Fact]
+    public async Task GetDecryptionInfo_UsesOfdlWhenCdmMissing()
+    {
+        FakeApiService apiService = new();
+        DownloadService service =
+            CreateService(new FakeConfigService(new Config()), new FakeDbService(), apiService);
+
+        (string decryptionKey, DateTime lastModified)? result = await service.GetDecryptionInfo(
+            "https://example.com/file.mpd", "policy", "signature", "kvp", "1", "2", "post",
+            true, false);
+
+        Assert.NotNull(result);
+        Assert.Equal("ofdl-key", result.Value.decryptionKey);
+        Assert.Equal(apiService.LastModifiedToReturn, result.Value.lastModified);
+        Assert.True(apiService.OfdlCalled);
+        Assert.False(apiService.CdmCalled);
+    }
+
+    [Fact]
+    public async Task GetDecryptionInfo_UsesCdmWhenAvailable()
+    {
+        FakeApiService apiService = new();
+        DownloadService service =
+            CreateService(new FakeConfigService(new Config()), new FakeDbService(), apiService);
+
+        (string decryptionKey, DateTime lastModified)? result = await service.GetDecryptionInfo(
+            "https://example.com/file.mpd", "policy", "signature", "kvp", "1", "2", "post",
+            false, false);
+
+        Assert.NotNull(result);
+        Assert.Equal("cdm-key", result.Value.decryptionKey);
+        Assert.Equal(apiService.LastModifiedToReturn, result.Value.lastModified);
+        Assert.True(apiService.CdmCalled);
+        Assert.False(apiService.OfdlCalled);
+    }
+
+    [Fact]
+    public async Task DownloadHighlights_ReturnsZeroWhenNoMedia()
+    {
+        FakeApiService apiService = new() { MediaToReturn = new Dictionary<long, string>() };
+        DownloadService service =
+            CreateService(new FakeConfigService(new Config()), new FakeDbService(), apiService);
+
+        DownloadResult result = await service.DownloadHighlights("user", 1, "/tmp/creator", new HashSet<long>(),
+            new ProgressRecorder());
+
+        Assert.Equal(0, result.TotalCount);
+        Assert.Equal(0, result.NewDownloads);
+        Assert.Equal(0, result.ExistingDownloads);
+        Assert.Equal("Highlights", result.MediaType);
+        Assert.True(result.Success);
+    }
+
+    [Fact]
+    public async Task DownloadHighlights_CountsExistingWhenAlreadyDownloaded()
+    {
+        using TempFolder temp = new();
+        string folder = NormalizeFolder(Path.Combine(temp.Path, "creator"));
+        FakeApiService apiService = new()
+        {
+            MediaToReturn = new Dictionary<long, string>
+            {
+                { 1, "https://example.com/one.jpg" }, { 2, "https://example.com/two.jpg" }
+            }
+        };
+        FakeDbService dbService = new() { CheckDownloadedResult = true };
+        FakeConfigService configService = new(new Config { ShowScrapeSize = false });
+        ProgressRecorder progress = new();
+        DownloadService service = CreateService(configService, dbService, apiService);
+
+        DownloadResult result = await service.DownloadHighlights("user", 1, folder, new HashSet<long>(), progress);
+
+        Assert.Equal(2, result.TotalCount);
+        Assert.Equal(0, result.NewDownloads);
+        Assert.Equal(2, result.ExistingDownloads);
+        Assert.Equal("Highlights", result.MediaType);
+        Assert.True(result.Success);
+        Assert.Equal(2, progress.Total);
+    }
+
+    private static DownloadService CreateService(FakeConfigService configService, FakeDbService dbService,
+        FakeApiService? apiService = null) =>
+        new(new FakeAuthService(), configService, dbService, new FakeFileNameService(),
+            apiService ?? new FakeApiService());
+
+    private static string NormalizeFolder(string folder) => folder.Replace("\\", "/");
+}

OF DL.Tests/Services/TestDoubles.cs

@@ -0,0 +1,208 @@
+using Newtonsoft.Json.Linq;
+using OF_DL.Enumerations;
+using OF_DL.Models;
+using OF_DL.Models.Config;
+using OF_DL.Models.Entities.Users;
+using OF_DL.Services;
+
+namespace OF_DL.Tests.Services;
+
+internal sealed class TempFolder : IDisposable
+{
+    public TempFolder()
+    {
+        Path = System.IO.Path.Combine(System.IO.Path.GetTempPath(), "ofdl-tests", Guid.NewGuid().ToString("N"));
+        Directory.CreateDirectory(Path);
+    }
+
+    public string Path { get; }
+
+    public void Dispose()
+    {
+        try
+        {
+            Directory.Delete(Path, true);
+        }
+        catch
+        {
+            // ignored
+        }
+    }
+}
+
+internal sealed class ProgressRecorder : IProgressReporter
+{
+    public long Total { get; private set; }
+
+    public void ReportProgress(long increment) => Total += increment;
+}
+
+internal sealed class FakeConfigService(Config config) : IConfigService
+{
+    public Config CurrentConfig { get; private set; } = config;
+
+    public bool IsCliNonInteractive { get; } = config.NonInteractiveMode;
+
+    public Task<bool> LoadConfigurationAsync(string[] args) => Task.FromResult(true);
+
+    public Task SaveConfigurationAsync(string filePath = "config.conf") => Task.CompletedTask;
+
+    public void UpdateConfig(Config newConfig) => CurrentConfig = newConfig;
+
+    public List<(string Name, bool Value)> GetToggleableProperties() => [];
+
+    public bool ApplyToggleableSelections(List<string> selectedNames) => false;
+}
+
+internal sealed class FakeDbService : IDbService
+{
+    public bool CheckDownloadedResult { get; init; }
+
+    public long StoredFileSize { get; init; }
+
+    public (string folder, long mediaId, string apiType, string directory, string filename, long size,
+        bool downloaded, DateTime createdAt)? LastUpdateMedia { get; private set; }
+
+    public Task UpdateMedia(string folder, long mediaId, string apiType, string directory, string filename,
+        long size, bool downloaded, DateTime createdAt)
+    {
+        LastUpdateMedia = (folder, mediaId, apiType, directory, filename, size, downloaded, createdAt);
+        return Task.CompletedTask;
+    }
+
+    public Task<long> GetStoredFileSize(string folder, long mediaId, string apiType) =>
+        Task.FromResult(StoredFileSize);
+
+    public Task<bool> CheckDownloaded(string folder, long mediaId, string apiType) =>
+        Task.FromResult(CheckDownloadedResult);
+
+    public Task AddMessage(string folder, long postId, string messageText, string price, bool isPaid,
+        bool isArchived, DateTime createdAt, long userId) => throw new NotImplementedException();
+
+    public Task AddPost(string folder, long postId, string messageText, string price, bool isPaid, bool isArchived,
+        DateTime createdAt) => throw new NotImplementedException();
+
+    public Task AddStory(string folder, long postId, string messageText, string price, bool isPaid, bool isArchived,
+        DateTime createdAt) => throw new NotImplementedException();
+
+    public Task CreateDb(string folder) => throw new NotImplementedException();
+
+    public Task CreateUsersDb(Dictionary<string, long> users) => throw new NotImplementedException();
+
+    public Task CheckUsername(KeyValuePair<string, long> user, string path) => throw new NotImplementedException();
+
+    public Task AddMedia(string folder, long mediaId, long postId, string link, string? directory,
+        string? filename, long? size, string apiType, string mediaType, bool preview, bool downloaded,
+        DateTime? createdAt) => throw new NotImplementedException();
+
+    public Task<DateTime?> GetMostRecentPostDate(string folder) => throw new NotImplementedException();
+}
+
+internal sealed class FakeApiService : IApiService
+{
+    public Dictionary<long, string>? MediaToReturn { get; init; }
+
+    public DateTime LastModifiedToReturn { get; set; } = new(2024, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+
+    public bool OfdlCalled { get; private set; }
+
+    public bool CdmCalled { get; private set; }
+
+    public Task<string> GetDrmMpdPssh(string mpdUrl, string policy, string signature, string kvp) =>
+        Task.FromResult("pssh");
+
+    public Task<DateTime> GetDrmMpdLastModified(string mpdUrl, string policy, string signature, string kvp) =>
+        Task.FromResult(LastModifiedToReturn);
+
+    public Task<string> GetDecryptionKeyOfdl(Dictionary<string, string> drmHeaders, string licenceUrl, string pssh)
+    {
+        OfdlCalled = true;
+        return Task.FromResult("ofdl-key");
+    }
+
+    public Task<string> GetDecryptionKeyCdm(Dictionary<string, string> drmHeaders, string licenceUrl, string pssh)
+    {
+        CdmCalled = true;
+        return Task.FromResult("cdm-key");
+    }
+
+    public Dictionary<string, string> GetDynamicHeaders(string path, string queryParam) =>
+        new() { { "X-Test", "value" } };
+
+    public Task<Dictionary<long, string>?> GetMedia(MediaType mediaType, string endpoint, string? username,
+        string folder) => Task.FromResult(MediaToReturn);
+
+    public Task<Dictionary<string, long>?> GetLists(string endpoint) => throw new NotImplementedException();
+
+    public Task<List<string>?> GetListUsers(string endpoint) => throw new NotImplementedException();
+
+    public Task<OF_DL.Models.Entities.Purchased.PaidPostCollection> GetPaidPosts(string endpoint, string folder,
+        string username, List<long> paidPostIds, IStatusReporter statusReporter) =>
+        throw new NotImplementedException();
+
+    public Task<OF_DL.Models.Entities.Posts.PostCollection> GetPosts(string endpoint, string folder,
+        List<long> paidPostIds, IStatusReporter statusReporter) => throw new NotImplementedException();
+
+    public Task<OF_DL.Models.Entities.Posts.SinglePostCollection> GetPost(string endpoint, string folder) =>
+        throw new NotImplementedException();
+
+    public Task<OF_DL.Models.Entities.Streams.StreamsCollection> GetStreams(string endpoint, string folder,
+        List<long> paidPostIds, IStatusReporter statusReporter) => throw new NotImplementedException();
+
+    public Task<OF_DL.Models.Entities.Archived.ArchivedCollection> GetArchived(string endpoint, string folder,
+        IStatusReporter statusReporter) => throw new NotImplementedException();
+
+    public Task<OF_DL.Models.Entities.Messages.MessageCollection> GetMessages(string endpoint, string folder,
+        IStatusReporter statusReporter) => throw new NotImplementedException();
+
+    public Task<OF_DL.Models.Entities.Purchased.PaidMessageCollection> GetPaidMessages(string endpoint,
+        string folder, string username, IStatusReporter statusReporter) => throw new NotImplementedException();
+
+    public Task<OF_DL.Models.Entities.Purchased.SinglePaidMessageCollection> GetPaidMessage(string endpoint,
+        string folder) => throw new NotImplementedException();
+
+    public Task<Dictionary<string, long>> GetPurchasedTabUsers(string endpoint, Dictionary<string, long> users) =>
+        throw new NotImplementedException();
+
+    public Task<List<OF_DL.Models.Entities.Purchased.PurchasedTabCollection>> GetPurchasedTab(string endpoint,
+        string folder, Dictionary<string, long> users) => throw new NotImplementedException();
+
+    public Task<User?> GetUserInfo(string endpoint) =>
+        throw new NotImplementedException();
+
+    public Task<JObject?> GetUserInfoById(string endpoint) =>
+        throw new NotImplementedException();
+
+    public Task<Dictionary<string, long>?> GetActiveSubscriptions(string endpoint,
+        bool includeRestrictedSubscriptions) => throw new NotImplementedException();
+
+    public Task<Dictionary<string, long>?> GetExpiredSubscriptions(string endpoint,
+        bool includeRestrictedSubscriptions) => throw new NotImplementedException();
+}
+
+internal sealed class FakeFileNameService : IFileNameService
+{
+    public Task<string> BuildFilename(string fileFormat, Dictionary<string, string> values) =>
+        throw new NotImplementedException();
+
+    public Task<Dictionary<string, string>> GetFilename(object info, object media, object author,
+        List<string> selectedProperties, string username, Dictionary<string, long>? users = null) =>
+        throw new NotImplementedException();
+}
+
+internal sealed class FakeAuthService : IAuthService
+{
+    public Auth? CurrentAuth { get; set; }
+
+    public Task<bool> LoadFromFileAsync(string filePath = "auth.json") => throw new NotImplementedException();
+
+    public Task<bool> LoadFromBrowserAsync() => throw new NotImplementedException();
+
+    public Task SaveToFileAsync(string filePath = "auth.json") => throw new NotImplementedException();
+
+    public void ValidateCookieString() => throw new NotImplementedException();
+
+    public Task<User?> ValidateAuthAsync() => throw new NotImplementedException();
+
+    public void Logout() => throw new NotImplementedException();
+}