/**
* Configuration management for Circuitry MCP Server
*
* Stores config in ~/.circuitry/mcp-config.json
*/
import * as fs from 'fs'
import * as path from 'path'
import * as os from 'os'
import type { MCPConfig } from './types.js'
const CONFIG_DIR = path.join(os.homedir(), '.circuitry')
const CONFIG_PATH = path.join(CONFIG_DIR, 'mcp-config.json')
const DEFAULT_CONFIG: MCPConfig = {
eserverUrl: 'http://localhost:3030',
accessKey: '',
configured: false
}
/**
* Ensure the config directory exists
*/
function ensureConfigDir(): void {
if (!fs.existsSync(CONFIG_DIR)) {
fs.mkdirSync(CONFIG_DIR, { recursive: true })
}
}
/**
* Load configuration from disk
*/
export function loadConfig(): MCPConfig {
try {
if (fs.existsSync(CONFIG_PATH)) {
const content = fs.readFileSync(CONFIG_PATH, 'utf-8')
const config = JSON.parse(content) as Partial<MCPConfig>
return {
...DEFAULT_CONFIG,
...config
}
}
} catch (error) {
// If config is corrupted, return default
console.error('[config] Error loading config:', error)
}
return { ...DEFAULT_CONFIG }
}
/**
* Save configuration to disk
*/
export function saveConfig(config: MCPConfig): void {
ensureConfigDir()
fs.writeFileSync(CONFIG_PATH, JSON.stringify(config, null, 2), 'utf-8')
}
/**
* Check if the server is configured with a valid access key
*/
export function isConfigured(): boolean {
const config = loadConfig()
return config.configured && config.accessKey.length > 0
}
/**
* Get the EServer URL from config or environment
*/
export function getEServerUrl(): string {
// Environment variable takes precedence
if (process.env.CIRCUITRY_ESERVER_URL) {
return process.env.CIRCUITRY_ESERVER_URL
}
const config = loadConfig()
return config.eserverUrl
}
/**
* Get the access key from config or environment
*/
export function getAccessKey(): string {
// Environment variable takes precedence
if (process.env.CIRCUITRY_ACCESS_KEY) {
return process.env.CIRCUITRY_ACCESS_KEY
}
const config = loadConfig()
return config.accessKey
}
/**
* Clear the configuration (for testing or reset)
*/
export function clearConfig(): void {
if (fs.existsSync(CONFIG_PATH)) {
fs.unlinkSync(CONFIG_PATH)
}
}
export { CONFIG_PATH, CONFIG_DIR }
