feat: only folderId is needed, default values are managed by the pkg

.gitignore

@@ -4,12 +4,13 @@ node_modules/
 # Logs
 logs/
 *.log
+*.txt
 
 # Database
 storage/databases/*.sqlite
 
 # Auth tokens and credentials
-storage/auth/*.json
+storage/auth/**/*.json
 
 # Downloads
 storage/downloads/

src/config.ts

@@ -1,17 +1,15 @@
 import path from 'path';
 
+const baseDirectories = {
+    databases: path.join(process.cwd(), 'storage', 'databases'),
+    downloads: path.join(process.cwd(), 'storage', 'downloads'),
+    logs: path.join(process.cwd(), 'logs'),
+};
+
 const defaultConfig = {
     folderId: '',
     tokenPath: path.join(process.cwd(), 'storage', 'auth', 'tokens', 'token.json'),
     credentialsPath: path.join(process.cwd(), 'storage', 'auth', 'credentials.json'),
-    databasePath: path.join(
-        process.cwd(),
-        'storage',
-        'databases',
-        'drive_database.sqlite'
-    ),
-    downloadsPath: path.join(process.cwd(), 'storage', 'downloads'),
-    logsPath: path.join(process.cwd(), 'logs'),
 };
 
-export default defaultConfig;
+export {defaultConfig, baseDirectories};

src/dev.ts

@@ -10,8 +10,6 @@ import {DriveFileManager} from './index';
 
 async function main() {
     const config = {
-        tokenPath: './storage/auth/token.json',
-        credentialsPath: './storage/auth/credentials.json',
         folderId: '1PZfURZ_iYmd2z7Ikn9ZYY7FY0nHOneSD',
     };
 

src/orchestrator.ts

@@ -1,73 +1,152 @@
+import path from 'path';
+import fs from 'fs/promises';
 import {authorize} from '@/services/authorizer';
 import {GoogleDriveService} from '@/services/google-drive';
 import {FolderDatabase} from '@/services/local-db';
 import {logger} from '@/utils/logger';
 import {DriveFileManagerConfig, DatabaseFile} from '@/types';
-import defaultConfig from '@/config';
+import {defaultConfig, baseDirectories} from '@/config';
 
 export class DriveFileManager {
     private googleDriveService!: GoogleDriveService;
     private folderDatabase!: FolderDatabase;
     private config: Required<DriveFileManagerConfig>;
+    private initialized = false;
 
     constructor(config: DriveFileManagerConfig) {
+        const {folderId} = config;
+
+        const databasePath =
+            config.databasePath ??
+            path.join(baseDirectories.databases, `${folderId}_drive_database.sqlite`);
+        const downloadsPath =
+            config.downloadsPath ?? path.join(baseDirectories.downloads, folderId);
+        const logsPath = config.logsPath ?? path.join(baseDirectories.logs, folderId);
+
         this.config = {
             ...defaultConfig,
             ...config,
-            tokenPath: config.tokenPath || defaultConfig.tokenPath,
-            credentialsPath: config.credentialsPath || defaultConfig.credentialsPath,
-            databasePath: config.databasePath || defaultConfig.databasePath,
-            downloadsPath: config.downloadsPath || defaultConfig.downloadsPath,
-            logsPath: config.logsPath || defaultConfig.logsPath,
+            tokenPath: config.tokenPath ?? defaultConfig.tokenPath,
+            credentialsPath: config.credentialsPath ?? defaultConfig.credentialsPath,
+            databasePath,
+            downloadsPath,
+            logsPath,
         };
+
+        this.initializeDirectories().catch(err => {
+            logger.error('Error initializing directories:', err);
+        });
+
         logger.setLogsPath(this.config.logsPath);
     }
 
     /**
-     * Initializes the orchestrator by authorizing and setting up services and database.
+     * Asynchronously creates necessary directories.
+     */
+    private async initializeDirectories(): Promise<void> {
+        const dirPromises = [
+            fs.mkdir(path.dirname(this.config.databasePath), {recursive: true}),
+            fs.mkdir(this.config.downloadsPath, {recursive: true}),
+            fs.mkdir(this.config.logsPath, {recursive: true}),
+        ];
+
+        await Promise.all(dirPromises);
+    }
+
+    /**
+     * Ensures the orchestrator is initialized before use.
+     */
+    private async ensureInitialized(): Promise<void> {
+        if (!this.initialized) {
+            await this.init();
+        }
+    }
+
+    /**
+     * Initializes the orchestrator by authorizing, validating the folder ID,
+     * and setting up services and the local database.
      */
     async init(): Promise<void> {
+        if (this.initialized) {
+            return;
+        }
+
         try {
             logger.info('Initializing Orchestrator...');
 
-            const authClient = await authorize({
-                folderId: this.config.folderId,
-                tokenPath: this.config.tokenPath,
-                credentialsPath: this.config.credentialsPath,
-                databasePath: this.config.databasePath,
-                downloadsPath: this.config.downloadsPath,
-                logsPath: this.config.logsPath,
-            });
+            const credentialsExist = await this.fileExists(this.config.credentialsPath);
+            if (!credentialsExist) {
+                console.error(
+                    `\nCredentials file not found at "${this.config.credentialsPath}".`
+                );
+                console.error(
+                    'Please obtain a credentials.json file by following the instructions at:'
+                );
+                console.error(
+                    'https://developers.google.com/drive/api/v3/quickstart/nodejs\n'
+                );
+                throw new Error('Credentials file not found.');
+            }
+
+            const [authClient] = await Promise.all([
+                authorize({
+                    folderId: this.config.folderId,
+                    tokenPath: this.config.tokenPath,
+                    credentialsPath: this.config.credentialsPath,
+                }),
+                this.initializeDirectories(),
+            ]);
 
             this.googleDriveService = new GoogleDriveService(
                 authClient,
                 this.config.downloadsPath
             );
 
-            this.folderDatabase = new FolderDatabase(
-                this.googleDriveService,
-                this.config.folderId,
-                this.config.databasePath,
-                logger
-            );
-            await this.folderDatabase.initDatabase();
-
-            await this.folderDatabase.refresh();
+            await Promise.all([
+                this.googleDriveService.validateFolderId(this.config.folderId),
+                this.initializeDatabase(),
+            ]);
 
+            this.initialized = true;
             logger.info('Orchestrator initialized successfully.');
         } catch (err) {
-            logger.error('Failed to initialize Orchestrator:', err);
+            logger.error('Error during initialization:', err);
             throw err;
         }
     }
 
     /**
-     * Searches for files in the database based on a query string.
+     * Initializes the folder database.
+     */
+    private async initializeDatabase(): Promise<void> {
+        this.folderDatabase = new FolderDatabase(
+            this.googleDriveService,
+            this.config.folderId,
+            this.config.databasePath,
+            logger
+        );
+
+        await this.folderDatabase.initDatabase();
+    }
+
+    /**
+     * Searches for files in the local database based on a query string.
      * @param query The search query.
      * @returns An array of DatabaseFile objects matching the query.
      */
     async searchFiles(query: string): Promise<DatabaseFile[]> {
-        return await this.folderDatabase.search(query);
+        await this.ensureInitialized();
+
+        try {
+            const results = await this.folderDatabase.search(query);
+            logger.info(
+                `Search completed. Found ${results.length} file(s) matching "${query}".`
+            );
+            return results;
+        } catch (err) {
+            logger.error('Error searching files:', err);
+            throw new Error(`Failed to search files: ${(err as Error).message}`);
+        }
     }
 
     /**
@@ -76,17 +155,60 @@ export class DriveFileManager {
      * @returns The local file path where the file was downloaded.
      */
     async downloadFile(fileLink: string): Promise<string> {
-        const fileExists = await this.folderDatabase.fileExists(fileLink);
-        if (!fileExists) {
-            throw new Error('File not found in the database.');
+        await this.ensureInitialized();
+
+        try {
+            const cachedFilePath = await this.folderDatabase.getLocalFilePath(fileLink);
+
+            if (cachedFilePath && (await this.fileExists(cachedFilePath))) {
+                logger.info(`File retrieved from cache at ${cachedFilePath}`);
+                return cachedFilePath;
+            }
+
+            const fileExists = await this.folderDatabase.fileExists(fileLink);
+            if (!fileExists) {
+                throw new Error('File not found in the database.');
+            }
+
+            const localPath =
+                await this.googleDriveService.downloadFileFromGoogleDrive(fileLink);
+            logger.info(`File downloaded successfully to ${localPath}`);
+
+            await this.folderDatabase.updateLocalFilePath(fileLink, localPath);
+
+            return localPath;
+        } catch (err) {
+            logger.error('Error during file download:', err);
+            throw err;
+        }
+    }
+
+    /**
+     * Checks if a file exists at the given path.
+     * @param filePath The path of the file to check.
+     * @returns True if the file exists, false otherwise.
+     */
+    private async fileExists(filePath: string): Promise<boolean> {
+        try {
+            await fs.access(filePath);
+            return true;
+        } catch {
+            return false;
         }
-        return await this.googleDriveService.downloadFileFromGoogleDrive(fileLink);
     }
 
     /**
-     * Refreshes the database by fetching the latest files from Google Drive.
+     * Refreshes the local database by fetching the latest files from Google Drive.
      */
     async refreshDatabase(): Promise<void> {
-        await this.folderDatabase.refresh();
+        await this.ensureInitialized();
+
+        try {
+            await this.folderDatabase.refresh();
+            logger.info('Database refreshed successfully.');
+        } catch (err) {
+            logger.error('Error refreshing the database:', err);
+            throw new Error(`Failed to refresh database: ${(err as Error).message}`);
+        }
     }
 }

src/services/authorizer.ts

@@ -1,9 +1,10 @@
 import fs from 'fs/promises';
+import path from 'path';
 import {authenticate} from '@google-cloud/local-auth';
 import {Auth, google} from 'googleapis';
 import {ensureDirectoryExists} from '@/utils';
 import {logger} from '@/utils/logger';
-import {DriveFileManagerConfig} from '@/types';
+import {InternalDriveFileManagerConfig} from '@/types';
 
 export async function loadSavedCredentialsIfExist(
     tokenPath: string
@@ -40,7 +41,8 @@ export async function saveCredentials(
             expiry_date: client.credentials.expiry_date,
         });
 
-        await ensureDirectoryExists(tokenPath);
+        const tokenDir = path.dirname(tokenPath);
+        await ensureDirectoryExists(tokenDir);
         await fs.writeFile(tokenPath, payload);
         logger.info('Credentials saved successfully.');
     } catch (err) {
@@ -50,7 +52,7 @@ export async function saveCredentials(
 }
 
 export async function authorize(
-    config: DriveFileManagerConfig
+    config: InternalDriveFileManagerConfig
 ): Promise<Auth.OAuth2Client> {
     const {tokenPath, credentialsPath} = config;
     let client = await loadSavedCredentialsIfExist(tokenPath);