refactor: migrate from MongoDB to SQLite, updating database schema and configuration for improved performance and simplicity

src/lib/services/config-db.service.ts

@@ -16,20 +16,21 @@ export class ConfigDBService {
   static async saveConfig(data: KomgaConfigData): Promise<KomgaConfig> {
     try {
       const user: User | null = await this.getCurrentUser();
+      const userId = parseInt(user.id, 10);
 
       const authHeader: string = Buffer.from(`${data.username}:${data.password}`).toString(
         "base64"
       );
 
       const config = await prisma.komgaConfig.upsert({
-        where: { userId: user.id },
+        where: { userId },
         update: {
           url: data.url,
           username: data.username,
           authHeader,
         },
         create: {
-          userId: user.id,
+          userId,
           url: data.url,
           username: data.username,
           authHeader,
@@ -48,11 +49,12 @@ export class ConfigDBService {
   static async getConfig(): Promise<KomgaConfig | null> {
     try {
       const user: User | null = await this.getCurrentUser();
+      const userId = parseInt(user.id, 10);
 
       const config = await prisma.komgaConfig.findUnique({
-        where: { userId: user.id },
+        where: { userId },
       });
-      return config as KomgaConfig | null;
+      return config;
     } catch (error) {
       if (error instanceof AppError) {
         throw error;
@@ -64,9 +66,10 @@ export class ConfigDBService {
   static async getTTLConfig(): Promise<TTLConfig | null> {
     try {
       const user: User | null = await this.getCurrentUser();
+      const userId = parseInt(user.id, 10);
 
       const config = await prisma.tTLConfig.findUnique({
-        where: { userId: user.id },
+        where: { userId },
       });
       return config as TTLConfig | null;
     } catch (error) {
@@ -80,9 +83,10 @@ export class ConfigDBService {
   static async saveTTLConfig(data: TTLConfigData): Promise<TTLConfig> {
     try {
       const user: User | null = await this.getCurrentUser();
+      const userId = parseInt(user.id, 10);
 
       const config = await prisma.tTLConfig.upsert({
-        where: { userId: user.id },
+        where: { userId },
         update: {
           defaultTTL: data.defaultTTL,
           homeTTL: data.homeTTL,
@@ -93,7 +97,7 @@ export class ConfigDBService {
           imageCacheMaxAge: data.imageCacheMaxAge,
         },
         create: {
-          userId: user.id,
+          userId,
           defaultTTL: data.defaultTTL,
           homeTTL: data.homeTTL,
           librariesTTL: data.librariesTTL,