/**
* Configuration management utilities
*/
import type { AuthCredentials, ServerConfig } from "../types/index.js";
/**
* Default server configuration
*/
const DEFAULT_CONFIG: ServerConfig = {
n8n: {
baseUrl: process.env.N8N_URL ?? "http://localhost:5678",
credentials: {
baseUrl: process.env.N8N_URL ?? "http://localhost:5678",
apiKey: process.env.N8N_API_KEY ?? "",
},
timeout: 30000,
retryAttempts: 3,
},
mcp: {
maxResponseSize: 100000,
defaultPageSize: 50,
verboseMode: false,
},
logging: {
level: process.env.LOG_LEVEL ?? "info",
enableApiStats: false,
enableDebugConsole: process.env.DEBUG === "true",
},
};
/**
* Validate authentication credentials
*/
function validateCredentials(credentials: AuthCredentials): boolean {
if (!credentials.baseUrl) {
return false;
}
// Must have API key
return Boolean(credentials.apiKey);
}
/**
* Validate server configuration
*/
export function validateConfig(config: ServerConfig): boolean {
try {
// Validate n8n configuration
if (!config.n8n.baseUrl) {
throw new Error("n8n baseUrl is required");
}
if (!validateCredentials(config.n8n.credentials)) {
throw new Error("Valid n8n API key is required");
}
if (config.n8n.timeout <= 0) {
throw new Error("n8n timeout must be positive");
}
if (config.n8n.retryAttempts < 0) {
throw new Error("n8n retryAttempts must be non-negative");
}
// Validate MCP configuration
if (config.mcp.maxResponseSize <= 0) {
throw new Error("MCP maxResponseSize must be positive");
}
if (config.mcp.defaultPageSize <= 0) {
throw new Error("MCP defaultPageSize must be positive");
}
// Validate logging configuration
const validLogLevels = ["error", "warn", "info", "debug"];
if (!validLogLevels.includes(config.logging.level)) {
throw new Error(`Invalid log level: ${config.logging.level}`);
}
return true;
} catch (error) {
console.error("Configuration validation failed:", error);
return false;
}
}
/**
* Normalize base URL by adding /api/v1 if not present
*/
function normalizeBaseUrl(baseUrl: string): string {
const cleanUrl = baseUrl.replace(/\/$/, '');
return cleanUrl.endsWith('/api/v1') ? cleanUrl : `${cleanUrl}/api/v1`;
}
/**
* Load configuration from environment variables and defaults
*/
export function loadConfig(): ServerConfig {
const rawBaseUrl = process.env.N8N_URL ?? "http://localhost:5678";
const normalizedBaseUrl = normalizeBaseUrl(rawBaseUrl);
return {
...DEFAULT_CONFIG,
n8n: {
...DEFAULT_CONFIG.n8n,
baseUrl: normalizedBaseUrl,
credentials: {
...DEFAULT_CONFIG.n8n.credentials,
baseUrl: normalizedBaseUrl,
},
},
};
}
