MCP Agent Social Media Server

// ABOUTME: Configuration management for the MCP server // ABOUTME: Loads and validates environment variables import { readFileSync } from 'node:fs'; import { dirname, join } from 'node:path'; import { fileURLToPath } from 'node:url'; import { config as loadDotenv } from 'dotenv'; import type { ServerConfig } from './types.js'; loadDotenv(); // Centralized configuration keys - single source of truth export const ENV_KEYS = { SOCIALMEDIA_API_BASE_URL: 'SOCIALMEDIA_API_BASE_URL', SOCIALMEDIA_API_KEY: 'SOCIALMEDIA_API_KEY', SOCIALMEDIA_TEAM_ID: 'SOCIALMEDIA_TEAM_ID', PORT: 'PORT', LOG_LEVEL: 'LOG_LEVEL', API_TIMEOUT: 'API_TIMEOUT', MCP_TRANSPORT: 'MCP_TRANSPORT', MCP_HTTP_PORT: 'MCP_HTTP_PORT', MCP_HTTP_HOST: 'MCP_HTTP_HOST', MCP_ENABLE_JSON: 'MCP_ENABLE_JSON', MCP_CORS_ORIGIN: 'MCP_CORS_ORIGIN', } as const; // Get version from package.json function getVersion(): string { try { const __filename = fileURLToPath(import.meta.url); const __dirname = dirname(__filename); const packageJsonPath = join(__dirname, '..', 'package.json'); const packageJson = JSON.parse(readFileSync(packageJsonPath, 'utf-8')); return packageJson.version; } catch (_error) { // Fallback version if package.json can't be read return '1.0.3'; } } export const version = getVersion(); function getEnvVar(name: string, defaultValue?: string): string { const value = process.env[name]; if (!value && !defaultValue) { throw new Error(`Missing required environment variable: ${name}`); } return value || defaultValue || ''; } export function getConfig(): ServerConfig { return { socialApiBaseUrl: getEnvVar(ENV_KEYS.SOCIALMEDIA_API_BASE_URL), socialApiKey: getEnvVar(ENV_KEYS.SOCIALMEDIA_API_KEY), teamName: getEnvVar(ENV_KEYS.SOCIALMEDIA_TEAM_ID), port: Number.parseInt(getEnvVar(ENV_KEYS.PORT, '3000'), 10), logLevel: getEnvVar(ENV_KEYS.LOG_LEVEL, 'info'), apiTimeout: Number.parseInt(getEnvVar(ENV_KEYS.API_TIMEOUT, '30000'), 10), // 30 seconds default }; } export const config: ServerConfig = getConfig(); export function validateConfig(): void { const errors: string[] = []; try { const conf = getConfig(); if (!conf.socialApiBaseUrl) { errors.push(`${ENV_KEYS.SOCIALMEDIA_API_BASE_URL} is required`); } if (!conf.socialApiKey) { errors.push(`${ENV_KEYS.SOCIALMEDIA_API_KEY} is required`); } if (!conf.teamName) { errors.push(`${ENV_KEYS.SOCIALMEDIA_TEAM_ID} is required`); } if (Number.isNaN(conf.port) || conf.port < 1 || conf.port > 65535) { errors.push(`${ENV_KEYS.PORT} must be a valid port number (1-65535)`); } } catch (error) { errors.push(error instanceof Error ? error.message : 'Unknown error'); } if (errors.length > 0) { throw new Error(`Configuration validation failed:\n${errors.join('\n')}`); } }