import { readFileSync, writeFileSync, existsSync, mkdirSync, chmodSync, statSync } from 'node:fs'
import { join } from 'node:path'
import { homedir } from 'node:os'
export const CONFIG_DIR = join(homedir(), '.rivian-mcp')
export const SESSION_FILE = join(CONFIG_DIR, 'session.json')
const SESSION_MAX_AGE_MS = 7 * 24 * 60 * 60 * 1000
export function loadSession(rivianApi) {
if (!existsSync(SESSION_FILE)) return false
try {
const st = statSync(SESSION_FILE)
if (st.mode & 0o077) {
console.error(
`[rivian-mcp] WARNING: ${SESSION_FILE} is readable by other users. Run: chmod 600 "${SESSION_FILE}"`,
)
}
} catch (err) {
if (err.code !== 'ENOENT') console.error(`[rivian-mcp] Could not stat session file: ${err.message}`)
}
let session
try {
session = JSON.parse(readFileSync(SESSION_FILE, 'utf8'))
} catch (err) {
console.error(`[rivian-mcp] Could not read session file: ${err.message}`)
return false
}
if (session.savedAt && Date.now() - session.savedAt > SESSION_MAX_AGE_MS) {
console.error('[rivian-mcp] Session expired. Please log in again.')
return false
}
if (session.authenticated || session.needsOtp) {
rivianApi.restoreSession(session)
return session.authenticated ? true : 'needs_otp'
}
return false
}
export function saveSession(rivianApi) {
mkdirSync(CONFIG_DIR, { recursive: true, mode: 0o700 })
chmodSync(CONFIG_DIR, 0o700)
const session = { ...rivianApi.exportSession(), savedAt: Date.now() }
writeFileSync(SESSION_FILE, JSON.stringify(session, null, 2), { mode: 0o600 })
chmodSync(SESSION_FILE, 0o600)
}
