Fix/602: root folder deletion

listenarr.api/Program.Testing.cs

@@ -22,7 +22,6 @@ static partial void ApplyTestHostPatches(WebApplicationBuilder builder)
         var inMemory = new Dictionary<string, string?>()
         {
             ["Listenarr:SqliteDbPath"] = sqliteDbPath,
-            ["Listenarr:DisableHostedServices"] = "true"
         };
         builder.Configuration.AddInMemoryCollection(inMemory);
     }

listenarr.api/Program.cs

@@ -30,7 +30,6 @@
 using Listenarr.Infrastructure.Extensions;
 using Listenarr.Application.Interfaces;
 using Listenarr.Infrastructure.SignalR;
-using Listenarr.Application.Downloads;
 using Listenarr.Infrastructure.Persistence;
 using Listenarr.Application.Common;
 using Listenarr.Application.Search.Filters;
@@ -545,29 +544,8 @@ ex is IOException
         sqliteOptions.MigrationsAssembly(typeof(QualityProfileRepository).Assembly.GetName().Name)));
 // Register application-level services (moved from Program.cs to keep startup focused)
 builder.Services.AddListenarrAppServices(builder.Configuration);
-// Register hosted/background services (moved from Program.cs). Allow tests to disable these.
-// Hosted services are ENABLED by default in local development because download monitoring
-// and import processing rely on these background workers.
-// Use explicit config/env override only when intentionally disabling them.
-var disableHostedServices =
-    builder.Configuration.GetValue<bool>("Listenarr:DisableHostedServices") ||
-    string.Equals(Environment.GetEnvironmentVariable("LISTENARR_DISABLE_HOSTED_SERVICES"), "true", StringComparison.OrdinalIgnoreCase);
 
-if (disableHostedServices)
-{
-    Log.Logger.Warning("[Startup] Hosted/background services are disabled by configuration override");
-}
-else
-{
-    Log.Logger.Information("[Startup] Hosted/background services are enabled");
-}
-// Register the queue singleton outside the hosted-services guard so controllers
-// (e.g. RootFoldersController) can resolve it even when hosted services are disabled (tests).
-builder.Services.AddSingleton<IUnmatchedScanQueueService, UnmatchedScanQueueService>();
-if (!disableHostedServices)
-{
-    builder.Services.AddListenarrHostedServices(builder.Configuration);
-}
+builder.Services.AddListenarrHostedServices(builder.Configuration);
 
 // FIXME: Required for ConfigurationService, what was planned with this feature ?
 builder.Services.AddSingleton(new EphemeralDataProtectionProvider().CreateProtector("Listenarr.ConfigurationService.ProwlarrImport"));

listenarr.application/Audiobooks/RootFolderService.cs

@@ -0,0 +1,192 @@
+/*
+ * Listenarr - Audiobook Management System
+ * Copyright (C) 2024-2026 Listenarr Contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+using Listenarr.Application.Interfaces;
+using Listenarr.Application.Interfaces.Repositories;
+using Listenarr.Domain.Models;
+using Microsoft.Extensions.Logging;
+
+namespace Listenarr.Application.Audiobooks
+{
+    public class RootFolderService(
+        IRootFolderRepository rootFolderRepository,
+        IAudiobookRepository audiobookRepository,
+        ILogger<RootFolderService> logger,
+        IMoveQueueService moveQueueService) : IRootFolderService
+    {
+        public async Task<RootFolder?> GetDefaultAsync()
+        {
+            return await rootFolderRepository.GetDefaultAsync();
+        }
+
+        public async Task<RootFolder> CreateAsync(RootFolder root)
+        {
+            root.Path ??= string.Empty;
+            root.Name = root.Name?.Trim() ?? string.Empty;
+
+            if (string.IsNullOrWhiteSpace(root.Path)) throw new ArgumentException("Path is required");
+            if (string.IsNullOrWhiteSpace(root.Name)) throw new ArgumentException("Name is required");
+
+            var existingByPath = await rootFolderRepository.GetByPathAsync(root.Path);
+            if (existingByPath != null) throw new InvalidOperationException("A root folder with that path already exists.");
+
+            if (root.IsDefault)
+            {
+                await rootFolderRepository.ClearDefaultExceptAsync(excludeId: null);
+            }
+
+            await rootFolderRepository.AddAsync(root);
+            return root;
+        }
+
+        public async Task DeleteAsync(int id, int? reassignRootId = null)
+        {
+            var rootFolders = await rootFolderRepository.GetAllAsync();
+            var rootFolder = rootFolders.FirstOrDefault(r => r.Id == id);
+            if (rootFolder == null)
+            {
+                logger.LogWarning($"Root folder with id {id} cannot be found, assuming it's deleted");
+                return;
+            }
+
+            rootFolders = [.. rootFolders.Where(r => r.Id != id)];
+
+            var audiobooks = await audiobookRepository.GetAllAsync();
+            var rootedAudiobooks = audiobooks.Where(a => !string.IsNullOrEmpty(a.BasePath) && !rootFolders.Any(r => a.BasePath.StartsWith(r.Path)));
+            if (rootedAudiobooks.Any())
+            {
+                throw new InvalidOperationException($"Root folder is in use by {rootedAudiobooks.Count()} audiobooks, we cannot remove it");
+            }
+
+            if (reassignRootId != null)
+            {
+                var newRoot = await rootFolderRepository.GetByIdAsync(reassignRootId!.Value) ?? throw new KeyNotFoundException("Reassign root not found");
+                await MigrateAudiobookPathsAsync(rootFolder.Path, newRoot.Path);
+            }
+
+            await rootFolderRepository.RemoveAsync(id);
+        }
+
+        public async Task<List<RootFolder>> GetAllAsync() => await rootFolderRepository.GetAllAsync();
+
+        public async Task<RootFolder?> GetByIdAsync(int id) => await rootFolderRepository.GetByIdAsync(id);
+
+        public async Task<RootFolder> UpdateAsync(RootFolder root, bool moveFiles = false, bool deleteEmptySource = true)
+        {
+            ArgumentNullException.ThrowIfNull(root);
+
+            root.Path ??= string.Empty;
+            root.Name = root.Name?.Trim() ?? string.Empty;
+
+            var existing = await rootFolderRepository.GetByIdAsync(root.Id) ?? throw new KeyNotFoundException("Root folder not found");
+
+            var duplicate = await rootFolderRepository.GetByPathAsync(root.Path);
+            if (duplicate != null && duplicate.Id != root.Id)
+            {
+                throw new InvalidOperationException("Another root folder with that path already exists.");
+            }
+
+            if (root.IsDefault)
+            {
+                await rootFolderRepository.ClearDefaultExceptAsync(excludeId: root.Id);
+            }
+
+            var oldPath = existing.Path;
+            var newPath = root.Path;
+
+            List<(int audiobookId, string original, string target)> moves = [];
+            if (!string.Equals(oldPath, newPath, StringComparison.OrdinalIgnoreCase))
+            {
+                moves = await MigrateAudiobookPathsAsync(oldPath, newPath);
+
+                try
+                {
+                    logger.LogInformation("Root rename from {OldPath} to {NewPath}: {Count} audiobooks affected", oldPath, newPath, moves.Count);
+                    foreach (var m in moves)
+                    {
+                        logger.LogInformation("Root rename move prep: AudiobookId={AudiobookId} Original={Original} Target={Target}", m.audiobookId, m.original, m.target);
+                    }
+                }
+                catch (Exception ex) when (ex is not OperationCanceledException && ex is not OutOfMemoryException && ex is not StackOverflowException)
+                {
+                    logger.LogDebug(ex, "Failed to emit diagnostics for root rename");
+                }
+            }
+
+            existing.Name = root.Name;
+            existing.Path = root.Path;
+            existing.IsDefault = root.IsDefault;
+            existing.UpdatedAt = DateTime.UtcNow;
+            await rootFolderRepository.UpdateAsync(existing);
+
+            if (moveFiles)
+            {
+                foreach (var m in moves)
+                {
+                    try
+                    {
+                        _ = moveQueueService.EnqueueMoveAsync(m.audiobookId, m.target, m.original);
+                    }
+                    catch (Exception ex) when (ex is not OperationCanceledException && ex is not OutOfMemoryException && ex is not StackOverflowException)
+                    {
+                        logger.LogWarning(ex, "Failed to enqueue move for audiobook {AudiobookId} during root rename", m.audiobookId);
+                    }
+                }
+            }
+
+            return existing;
+        }
+
+        // FIXME: Should be in audibook service
+        // FIXME: Can produce unexpected results (on the user side) when some root folder are contained within each other (/data/media and /data/media/library) and one of them gets moved
+        private async Task<List<(int audiobookId, string original, string target)>> MigrateAudiobookPathsAsync(string oldRootPath, string newRootPath, CancellationToken ct = default)
+        {
+            var all = await audiobookRepository.GetAllAsync();
+            all = [.. all.Where(a => !string.IsNullOrEmpty(a.BasePath))];
+
+            const char backslash = '\\';
+            const char slash = '/';
+            string NormalizeForCompare(string s) => (s ?? string.Empty).Replace(slash, backslash).TrimEnd(backslash).ToLowerInvariant();
+            var oldNorm = NormalizeForCompare(oldRootPath);
+
+            var affected = all.Where(a =>
+            {
+                var bpNorm = NormalizeForCompare(a.BasePath!);
+                return bpNorm == oldNorm || bpNorm.StartsWith(oldNorm + backslash);
+            }).ToList();
+
+            var moves = new List<(int audiobookId, string original, string target)>();
+            foreach (var a in affected)
+            {
+                var original = a.BasePath!;
+                char sepToUse = original.Contains(backslash) ? backslash : slash;
+                var suffix = original.Length > oldRootPath.Length
+                    ? original.Substring(oldRootPath.Length).TrimStart(backslash, slash)
+                    : string.Empty;
+                var target = string.IsNullOrEmpty(suffix)
+                    ? newRootPath
+                    : newRootPath + sepToUse + suffix.Replace(backslash, sepToUse).Replace(slash, sepToUse);
+                moves.Add((a.Id, original, target));
+                a.BasePath = target;
+
+                await audiobookRepository.UpdateAsync(a);
+            }
+
+            return moves;
+        }
+    }
+}