Metabase

/** * Configuration management with environment variable validation */ import 'dotenv/config'; import { z } from 'zod'; import { homedir } from 'os'; import { join } from 'path'; // Helper function to expand system variables function expandSystemVariables(path: string | undefined): string { // If no path is provided, use default if (!path) { return join(homedir(), 'Downloads', 'Metabase'); } const homeDir = homedir(); const desktopDir = join(homeDir, 'Desktop'); const documentsDir = join(homeDir, 'Documents'); const downloadsDir = join(homeDir, 'Downloads'); return path .replace(/\$\{HOME\}/g, homeDir) .replace(/\$\{DESKTOP\}/g, desktopDir) .replace(/\$\{DOCUMENTS\}/g, documentsDir) .replace(/\$\{DOWNLOADS\}/g, downloadsDir) .replace(/\$HOME/g, homeDir) .replace(/^~/, homeDir); } // Environment variable schema const envSchema = z .object({ METABASE_URL: z.string().url('METABASE_URL must be a valid URL'), METABASE_API_KEY: z.string().optional(), METABASE_USER_EMAIL: z.string().email().optional(), METABASE_PASSWORD: z.string().min(1).optional(), NODE_ENV: z.enum(['development', 'production', 'test']).default('development'), LOG_LEVEL: z.enum(['debug', 'info', 'warn', 'error', 'fatal']).default('info'), CACHE_TTL_MS: z .string() .default('600000') .transform(val => parseInt(val, 10)) .pipe(z.number().positive()), // 10 minutes REQUEST_TIMEOUT_MS: z .string() .default('600000') .transform(val => parseInt(val, 10)) .pipe(z.number().positive()), // 10 minutes EXPORT_DIRECTORY: z.string().default('${DOWNLOADS}/Metabase').transform(expandSystemVariables), METABASE_READ_ONLY_MODE: z .string() .default('true') .transform(val => val.toLowerCase() === 'true'), }) .refine(data => data.METABASE_API_KEY || (data.METABASE_USER_EMAIL && data.METABASE_PASSWORD), { message: 'Either METABASE_API_KEY or both METABASE_USER_EMAIL and METABASE_PASSWORD must be provided', path: ['METABASE_API_KEY'], }); // Parse and validate environment variables function validateEnvironment() { try { return envSchema.parse(process.env); } catch (error) { if (error instanceof z.ZodError) { const errorMessages = error.errors.map(err => `${err.path.join('.')}: ${err.message}`); throw new Error(`Environment validation failed:\n${errorMessages.join('\n')}`); } throw error; } } // Create default test config for test environment function createTestConfig() { return { METABASE_URL: 'http://localhost:3000', METABASE_API_KEY: 'test-api-key', METABASE_USER_EMAIL: undefined, METABASE_PASSWORD: undefined, NODE_ENV: 'test' as const, LOG_LEVEL: 'info' as const, CACHE_TTL_MS: 600000, REQUEST_TIMEOUT_MS: 600000, EXPORT_DIRECTORY: join(homedir(), 'Downloads', 'Metabase'), METABASE_READ_ONLY_MODE: true, }; } // Export validated configuration or test config export const config = process.env.NODE_ENV === 'test' || process.env.VITEST ? createTestConfig() : validateEnvironment(); // Authentication method enum export enum AuthMethod { SESSION = 'session', API_KEY = 'api_key', } // Logger level enum export enum LogLevel { DEBUG = 'debug', INFO = 'info', WARN = 'warn', ERROR = 'error', FATAL = 'fatal', } // Determine authentication method export const authMethod: AuthMethod = config.METABASE_API_KEY ? AuthMethod.API_KEY : AuthMethod.SESSION; export default config;