Add Transmission/NZBGet and per-client paths and much more

Extend multi-download-client support to include Transmission and NZBGet and introduce per-client custom download paths. Adds protocol mapping and new client types, Transmission/NZBGet integration services, API CRUD and validation changes, UI components/modal updates and live path previews, and manager routing by protocol. Includes DB migrations (download_path on download_history, interactive_search_access on users), schema updates, and related processor/service fixes and tests to ensure backward compatibility and proper path resolution.

src/app/api/admin/settings/download-client/route.ts

@@ -11,6 +11,7 @@ import { NextRequest, NextResponse } from 'next/server';
 import { requireAuth, requireAdmin, AuthenticatedRequest } from '@/lib/middleware/auth';
 import { getConfigService } from '@/lib/services/config.service';
 import { getDownloadClientManager, invalidateDownloadClientManager, DownloadClientConfig } from '@/lib/services/download-client-manager.service';
+import { SUPPORTED_CLIENT_TYPES, getClientDisplayName } from '@/lib/interfaces/download-client.interface';
 import { PathMapper } from '@/lib/utils/path-mapper';
 import { RMABLogger } from '@/lib/utils/logger';
 import { randomUUID } from 'crypto';
@@ -35,9 +36,9 @@ export async function PUT(request: NextRequest) {
         logger.warn('DEPRECATED: Using legacy single-client API. Please use /api/admin/settings/download-clients instead.');
 
         // Validate type
-        if (type !== 'qbittorrent' && type !== 'sabnzbd') {
+        if (!SUPPORTED_CLIENT_TYPES.includes(type)) {
           return NextResponse.json(
-            { error: 'Invalid client type. Must be qbittorrent or sabnzbd' },
+            { error: `Invalid client type. Must be one of: ${SUPPORTED_CLIENT_TYPES.join(', ')}` },
             { status: 400 }
           );
         }
@@ -97,7 +98,7 @@ export async function PUT(request: NextRequest) {
         const updatedClient: DownloadClientConfig = {
           id: existingIndex >= 0 ? existingClients[existingIndex].id : randomUUID(),
           type,
-          name: type === 'qbittorrent' ? 'qBittorrent' : 'SABnzbd',
+          name: getClientDisplayName(type),
           enabled: true,
           url,
           username: username || undefined,
@@ -137,6 +138,12 @@ export async function PUT(request: NextRequest) {
         } else if (type === 'sabnzbd') {
           const { invalidateSABnzbdService } = await import('@/lib/integrations/sabnzbd.service');
           invalidateSABnzbdService();
+        } else if (type === 'nzbget') {
+          const { invalidateNZBGetService } = await import('@/lib/integrations/nzbget.service');
+          invalidateNZBGetService();
+        } else if (type === 'transmission') {
+          const { invalidateTransmissionService } = await import('@/lib/integrations/transmission.service');
+          invalidateTransmissionService();
         }
 
         return NextResponse.json({

src/app/api/admin/settings/download-clients/[id]/route.ts

@@ -37,6 +37,7 @@ export async function PUT(
           remotePath,
           localPath,
           category,
+          customPath,
         } = body;
 
         const config = await getConfigService();
@@ -53,6 +54,14 @@ export async function PUT(
 
         const existingClient = clients[clientIndex];
 
+        // Validate customPath: reject paths containing ".."
+        if (customPath && customPath.includes('..')) {
+          return NextResponse.json(
+            { error: 'Custom path cannot contain ".."' },
+            { status: 400 }
+          );
+        }
+
         // Build updated client (preserve fields not in request)
         const updatedClient: DownloadClientConfig = {
           ...existingClient,
@@ -66,6 +75,7 @@ export async function PUT(
           remotePath: remotePath !== undefined ? remotePath : existingClient.remotePath,
           localPath: localPath !== undefined ? localPath : existingClient.localPath,
           category: category !== undefined ? category : existingClient.category,
+          customPath: customPath !== undefined ? (customPath || undefined) : existingClient.customPath,
         };
 
         // Validate path mapping if enabled

src/app/api/admin/settings/download-clients/route.ts

@@ -6,8 +6,8 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { requireAuth, requireAdmin, AuthenticatedRequest } from '@/lib/middleware/auth';
 import { getConfigService } from '@/lib/services/config.service';
-import { getDownloadClientManager, invalidateDownloadClientManager } from '@/lib/services/download-client-manager.service';
-import { DownloadClientConfig } from '@/lib/services/download-client-manager.service';
+import { getDownloadClientManager, invalidateDownloadClientManager, DownloadClientConfig } from '@/lib/services/download-client-manager.service';
+import { SUPPORTED_CLIENT_TYPES, CLIENT_PROTOCOL_MAP, DownloadClientType, getClientDisplayName } from '@/lib/interfaces/download-client.interface';
 import { getEncryptionService } from '@/lib/services/encryption.service';
 import { RMABLogger } from '@/lib/utils/logger';
 import { randomUUID } from 'crypto';
@@ -62,12 +62,13 @@ export async function POST(request: NextRequest) {
           remotePath,
           localPath,
           category,
+          customPath,
         } = body;
 
         // Validate type
-        if (type !== 'qbittorrent' && type !== 'sabnzbd') {
+        if (!SUPPORTED_CLIENT_TYPES.includes(type)) {
           return NextResponse.json(
-            { error: 'Invalid client type. Must be qbittorrent or sabnzbd' },
+            { error: `Invalid client type. Must be one of: ${SUPPORTED_CLIENT_TYPES.join(', ')}` },
             { status: 400 }
           );
         }
@@ -99,21 +100,30 @@ export async function POST(request: NextRequest) {
           }
         }
 
-        // Check for duplicate type (only one client per type for now)
+        // Check for duplicate protocol (only one client per protocol)
         const config = await getConfigService();
         const manager = getDownloadClientManager(config);
         const existingClients = await manager.getAllClients();
 
-        const duplicateType = existingClients.find(c => c.type === type && c.enabled);
-        if (duplicateType) {
+        const protocol = CLIENT_PROTOCOL_MAP[type as DownloadClientType];
+        const duplicateProtocol = existingClients.find(c => CLIENT_PROTOCOL_MAP[c.type] === protocol);
+        if (duplicateProtocol) {
           return NextResponse.json(
-            { error: `A ${type} client is already configured. Please disable or remove it first.` },
+            { error: `A ${protocol} client (${getClientDisplayName(duplicateProtocol.type)}) is already configured. Remove it first to add a different ${protocol} client.` },
             { status: 400 }
           );
         }
 
         // Create new client config for testing (with plaintext password)
         // qBittorrent credentials are optional (supports IP whitelist auth)
+        // Validate customPath: reject paths containing ".."
+        if (customPath && customPath.includes('..')) {
+          return NextResponse.json(
+            { error: 'Custom path cannot contain ".."' },
+            { status: 400 }
+          );
+        }
+
         const newClient: DownloadClientConfig = {
           id: randomUUID(),
           type,
@@ -127,6 +137,7 @@ export async function POST(request: NextRequest) {
           remotePath: remotePath || undefined,
           localPath: localPath || undefined,
           category: category || 'readmeabook',
+          customPath: customPath || undefined,
         };
 
         // Test connection before saving

src/app/api/admin/settings/download-clients/test/route.ts

@@ -6,8 +6,8 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { requireAuth, requireAdmin, AuthenticatedRequest } from '@/lib/middleware/auth';
 import { getConfigService } from '@/lib/services/config.service';
-import { getDownloadClientManager } from '@/lib/services/download-client-manager.service';
-import { DownloadClientConfig } from '@/lib/services/download-client-manager.service';
+import { getDownloadClientManager, DownloadClientConfig } from '@/lib/services/download-client-manager.service';
+import { SUPPORTED_CLIENT_TYPES } from '@/lib/interfaces/download-client.interface';
 import { RMABLogger } from '@/lib/utils/logger';
 
 const logger = RMABLogger.create('API.Admin.Settings.DownloadClients.Test');
@@ -23,6 +23,7 @@ export async function POST(request: NextRequest) {
         const {
           clientId, // Optional: existing client ID to use stored password
           type,
+          name: clientName,
           url,
           username,
           password,
@@ -33,9 +34,9 @@ export async function POST(request: NextRequest) {
         } = body;
 
         // Validate type
-        if (type !== 'qbittorrent' && type !== 'sabnzbd') {
+        if (!SUPPORTED_CLIENT_TYPES.includes(type)) {
           return NextResponse.json(
-            { error: 'Invalid client type. Must be qbittorrent or sabnzbd' },
+            { error: `Invalid client type. Must be one of: ${SUPPORTED_CLIENT_TYPES.join(', ')}` },
             { status: 400 }
           );
         }
@@ -87,7 +88,7 @@ export async function POST(request: NextRequest) {
         const testConfig: DownloadClientConfig = {
           id: 'test',
           type,
-          name: 'Test Client',
+          name: clientName || type,
           enabled: true,
           url,
           username: effectiveUsername || '',

src/app/api/admin/settings/interactive-search/route.ts

@@ -0,0 +1,91 @@
+/**
+ * Component: Admin Interactive Search Settings API
+ * Documentation: documentation/settings-pages.md
+ */
+
+import { NextRequest, NextResponse } from 'next/server';
+import { requireAuth, requireAdmin, AuthenticatedRequest } from '@/lib/middleware/auth';
+import { prisma } from '@/lib/db';
+import { RMABLogger } from '@/lib/utils/logger';
+
+const logger = RMABLogger.create('API.Admin.Settings.InteractiveSearch');
+
+const CONFIG_KEY = 'interactive_search_access';
+
+/**
+ * GET /api/admin/settings/interactive-search
+ * Get current global interactive search access setting
+ */
+export async function GET(request: NextRequest) {
+  return requireAuth(request, async (req: AuthenticatedRequest) => {
+    return requireAdmin(req, async () => {
+      try {
+        const config = await prisma.configuration.findUnique({
+          where: { key: CONFIG_KEY },
+        });
+
+        // Default to true if not configured (backward compatibility)
+        const interactiveSearchAccess = config === null ? true : config.value === 'true';
+
+        return NextResponse.json({ interactiveSearchAccess });
+      } catch (error) {
+        logger.error('Failed to fetch interactive search setting', {
+          error: error instanceof Error ? error.message : String(error)
+        });
+        return NextResponse.json(
+          { error: 'Failed to fetch interactive search setting' },
+          { status: 500 }
+        );
+      }
+    });
+  });
+}
+
+/**
+ * PATCH /api/admin/settings/interactive-search
+ * Update global interactive search access setting
+ */
+export async function PATCH(request: NextRequest) {
+  return requireAuth(request, async (req: AuthenticatedRequest) => {
+    return requireAdmin(req, async () => {
+      try {
+        const body = await request.json();
+        const { interactiveSearchAccess } = body;
+
+        // Validate input
+        if (typeof interactiveSearchAccess !== 'boolean') {
+          return NextResponse.json(
+            { error: 'Invalid input. interactiveSearchAccess must be a boolean' },
+            { status: 400 }
+          );
+        }
+
+        // Update configuration
+        await prisma.configuration.upsert({
+          where: { key: CONFIG_KEY },
+          create: {
+            key: CONFIG_KEY,
+            value: interactiveSearchAccess.toString(),
+          },
+          update: {
+            value: interactiveSearchAccess.toString(),
+          },
+        });
+
+        logger.info(`Interactive search access setting updated to: ${interactiveSearchAccess}`, {
+          userId: req.user?.sub,
+        });
+
+        return NextResponse.json({ interactiveSearchAccess });
+      } catch (error) {
+        logger.error('Failed to update interactive search setting', {
+          error: error instanceof Error ? error.message : String(error)
+        });
+        return NextResponse.json(
+          { error: 'Failed to update interactive search setting' },
+          { status: 500 }
+        );
+      }
+    });
+  });
+}

src/app/api/admin/settings/paths/route.ts

@@ -15,7 +15,7 @@ export async function PUT(request: NextRequest) {
   return requireAuth(request, async (req: AuthenticatedRequest) => {
     return requireAdmin(req, async () => {
       try {
-        const { downloadDir, mediaDir, audiobookPathTemplate, metadataTaggingEnabled, chapterMergingEnabled } = await request.json();
+        const { downloadDir, mediaDir, audiobookPathTemplate, ebookPathTemplate, metadataTaggingEnabled, chapterMergingEnabled } = await request.json();
 
         if (!downloadDir || !mediaDir) {
           return NextResponse.json(
@@ -59,6 +59,20 @@ export async function PUT(request: NextRequest) {
           });
         }
 
+        // Update ebook path template
+        if (ebookPathTemplate !== undefined) {
+          await prisma.configuration.upsert({
+            where: { key: 'ebook_path_template' },
+            update: { value: ebookPathTemplate },
+            create: {
+              key: 'ebook_path_template',
+              value: ebookPathTemplate,
+              category: 'automation',
+              description: 'Template for organizing ebook files in media directory',
+            },
+          });
+        }
+
         // Update metadata tagging setting
         await prisma.configuration.upsert({
           where: { key: 'metadata_tagging_enabled' },
@@ -90,12 +104,21 @@ export async function PUT(request: NextRequest) {
         configService.clearCache('download_dir');
         configService.clearCache('media_dir');
         configService.clearCache('audiobook_path_template');
+        configService.clearCache('ebook_path_template');
         configService.clearCache('metadata_tagging_enabled');
         configService.clearCache('chapter_merging_enabled');
 
-        // Invalidate qBittorrent service singleton to force reload of download_dir
+        // Invalidate all download client singletons to force reload of download_dir
+        const { invalidateDownloadClientManager } = await import('@/lib/services/download-client-manager.service');
+        invalidateDownloadClientManager();
         const { invalidateQBittorrentService } = await import('@/lib/integrations/qbittorrent.service');
         invalidateQBittorrentService();
+        const { invalidateSABnzbdService } = await import('@/lib/integrations/sabnzbd.service');
+        invalidateSABnzbdService();
+        const { invalidateNZBGetService } = await import('@/lib/integrations/nzbget.service');
+        invalidateNZBGetService();
+        const { invalidateTransmissionService } = await import('@/lib/integrations/transmission.service');
+        invalidateTransmissionService();
 
         return NextResponse.json({
           success: true,

src/app/api/admin/settings/route.ts

@@ -125,6 +125,7 @@ export async function GET(request: NextRequest) {
         downloadDir: configMap.get('download_dir') || '/downloads',
         mediaDir: configMap.get('media_dir') || '/media/audiobooks',
         audiobookPathTemplate: configMap.get('audiobook_path_template') || '{author}/{title} {asin}',
+        ebookPathTemplate: configMap.get('ebook_path_template') || configMap.get('audiobook_path_template') || '{author}/{title} {asin}',
         metadataTaggingEnabled: configMap.get('metadata_tagging_enabled') === 'true',
         chapterMergingEnabled: configMap.get('chapter_merging_enabled') === 'true',
       },

src/app/api/admin/settings/test-download-client/route.ts

@@ -1,14 +1,16 @@
 /**
- * Component: Admin Settings Test Download Client API
+ * Component: Admin Settings Test Download Client API (DEPRECATED)
  * Documentation: documentation/settings-pages.md
+ *
+ * DEPRECATED: Use /api/admin/settings/download-clients/test instead.
+ * Maintained for backward compatibility.
  */
 
 import { NextRequest, NextResponse } from 'next/server';
 import { requireAuth, requireAdmin, AuthenticatedRequest } from '@/lib/middleware/auth';
 import { getConfigService } from '@/lib/services/config.service';
-import { getDownloadClientManager } from '@/lib/services/download-client-manager.service';
-import { QBittorrentService } from '@/lib/integrations/qbittorrent.service';
-import { SABnzbdService } from '@/lib/integrations/sabnzbd.service';
+import { getDownloadClientManager, DownloadClientConfig } from '@/lib/services/download-client-manager.service';
+import { SUPPORTED_CLIENT_TYPES } from '@/lib/interfaces/download-client.interface';
 import { RMABLogger } from '@/lib/utils/logger';
 
 const logger = RMABLogger.create('API.TestDownloadClient');
@@ -19,6 +21,7 @@ export async function POST(request: NextRequest) {
       try {
         const {
           type,
+          name: clientName,
           url,
           username,
           password,
@@ -37,9 +40,9 @@ export async function POST(request: NextRequest) {
           );
         }
 
-        if (type !== 'qbittorrent' && type !== 'sabnzbd') {
+        if (!SUPPORTED_CLIENT_TYPES.includes(type)) {
           return NextResponse.json(
-            { success: false, error: 'Invalid client type. Must be qbittorrent or sabnzbd' },
+            { success: false, error: `Invalid client type. Must be one of: ${SUPPORTED_CLIENT_TYPES.join(', ')}` },
             { status: 400 }
           );
         }
@@ -64,53 +67,28 @@ export async function POST(request: NextRequest) {
           actualPassword = matchingClient.password;
         }
 
-        // Validate required fields per client type and test connection
-        let version: string | undefined;
+        // Build a temporary config for testing
+        const testConfig: DownloadClientConfig = {
+          id: 'legacy-test',
+          type,
+          name: clientName || type,
+          enabled: true,
+          url,
+          username: username || '',
+          password: actualPassword || '',
+          disableSSLVerify: disableSSLVerify || false,
+          remotePathMappingEnabled: remotePathMappingEnabled || false,
+          remotePath: remotePath || undefined,
+          localPath: localPath || undefined,
+          category: 'readmeabook',
+        };
 
-        if (type === 'qbittorrent') {
-          logger.debug('Testing qBittorrent connection');
-          if (!username || !actualPassword) {
-            return NextResponse.json(
-              { success: false, error: 'Username and password are required for qBittorrent' },
-              { status: 400 }
-            );
-          }
-
-          // Test qBittorrent connection
-          version = await QBittorrentService.testConnectionWithCredentials(
-            url,
-            username,
-            actualPassword,
-            disableSSLVerify || false
-          );
-        } else if (type === 'sabnzbd') {
-          logger.debug('Testing SABnzbd connection');
-          if (!actualPassword) {
-            return NextResponse.json(
-              { success: false, error: 'API key (password) is required for SABnzbd' },
-              { status: 400 }
-            );
-          }
-
-          // Test SABnzbd connection
-          const sabnzbd = new SABnzbdService(url, actualPassword, 'readmeabook', disableSSLVerify || false);
-          const result = await sabnzbd.testConnection();
-
-          if (!result.success) {
-            return NextResponse.json(
-              {
-                success: false,
-                error: result.error || 'Failed to connect to SABnzbd',
-              },
-              { status: 500 }
-            );
-          }
-
-          version = result.version;
-        }
+        const configService = getConfigService();
+        const manager = getDownloadClientManager(configService);
+        const result = await manager.testConnection(testConfig);
 
         // If path mapping enabled, validate local path exists
-        if (remotePathMappingEnabled) {
+        if (result.success && remotePathMappingEnabled) {
           if (!remotePath || !localPath) {
             return NextResponse.json(
               {
@@ -136,10 +114,14 @@ export async function POST(request: NextRequest) {
           }
         }
 
-        return NextResponse.json({
-          success: true,
-          version,
-        });
+        if (result.success) {
+          return NextResponse.json({ success: true, message: result.message });
+        }
+
+        return NextResponse.json(
+          { success: false, error: result.message },
+          { status: 400 }
+        );
       } catch (error) {
         logger.error('Download client test failed', { error: error instanceof Error ? error.message : String(error) });
         return NextResponse.json(