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import { join } from 'path';
import { spawn, execSync } from 'child_process';
import { createServer } from 'net';
import { existsSync, readFileSync, writeFileSync, unlinkSync, mkdirSync } from 'fs';
import { homedir } from 'os';
import { randomBytes } from 'crypto';
import {
getStats, getActiveSessions,
getSessionsPaginated, getSessionDetail,
getDailyCosts, getModelBreakdown, getTopSessions,
exportSessions, loadPricing,
getProviderBreakdown, getFileHotspots, getActivityHeatmap,
getDailyTokens, getCostVelocity, getProjectBreakdown, getTokenRatios,
getSession, getCommits, clearAllData,
addFeedback, getFeedback,
} from './db';
import { getGitDiff, getCommitDiff, getGitDiffStats } from './git';
import { getLicense, activateLicense, deactivateLicense } from '../pro/src/license';
interface DashboardOptions {
port?: number;
open?: boolean;
host?: string;
json?: boolean;
}
// ── PID file management ────────────────────────────────────
const PID_DIR = join(homedir(), '.codesession');
const pidFilePath = (port: number) => join(PID_DIR, `dashboard-${port}.pid`);
function writePidFile(port: number): void {
mkdirSync(PID_DIR, { recursive: true });
writeFileSync(pidFilePath(port), `${process.pid}\n`, 'utf-8');
}
function removePidFile(port: number): void {
try { unlinkSync(pidFilePath(port)); } catch (_) { /* already gone */ }
}
function readOwnPid(port: number): number | null {
const file = pidFilePath(port);
if (!existsSync(file)) return null;
try {
const pid = parseInt(readFileSync(file, 'utf-8').trim(), 10);
if (isNaN(pid) || pid <= 0) return null;
process.kill(pid, 0); // existence check
return pid;
} catch (_) {
try { unlinkSync(file); } catch (_) {}
return null;
}
}
function killOwnStaleProcess(port: number): boolean {
const pid = readOwnPid(port);
if (pid === null) return false;
try {
// Double-check the process still exists before killing
process.kill(pid, 0);
// Verify it's actually our process (check command line contains 'dashboard' or 'node')
// This is a heuristic to avoid killing unrelated processes with recycled PIDs
let cmdLine = '';
try {
if (process.platform === 'win32') {
// Validate pid is a safe integer before shell interpolation
if (!Number.isInteger(pid) || pid <= 0 || pid > 4194304) {
removePidFile(port);
return false;
}
cmdLine = execSync(`wmic process where processid=${pid} get commandline`, { timeout: 2000, encoding: 'utf-8' });
} else {
cmdLine = readFileSync(`/proc/${pid}/cmdline`, 'utf-8').replace(/\0/g, ' ');
}
} catch (_) {
// Can't read cmdline - process might be gone or we lack permissions
removePidFile(port);
return false;
}
// Only kill if it looks like a dashboard process
if (!cmdLine.toLowerCase().includes('dashboard') && !cmdLine.toLowerCase().includes('node')) {
console.log(` PID ${pid} doesn't appear to be a dashboard process, skipping kill`);
removePidFile(port);
return false;
}
if (process.platform === 'win32') {
execSync(`taskkill /PID ${pid} /F`, { timeout: 5000 });
} else {
process.kill(pid, 'SIGTERM');
}
console.log(` Killed previous dashboard (PID ${pid}) on port ${port}`);
removePidFile(port);
return true;
} catch (_) {
removePidFile(port);
return false;
}
}
// ── Port check ─────────────────────────────────────────────
function isPortInUse(port: number): Promise<boolean> {
return new Promise((resolve) => {
const tester = createServer()
.once('error', (err: any) => {
if (err.code === 'EADDRINUSE') resolve(true);
else resolve(false);
})
.once('listening', () => {
tester.close(() => resolve(false));
})
.listen(port, '127.0.0.1');
});
}
// ── API route builder ──────────────────────────────────────
export function buildApiRouter(): Router {
const router = Router();
router.use((_req, res, next) => {
res.setHeader('X-Codesession-Api-Version', '1');
next();
});
router.use((req, res, next) => {
if (req.method !== 'GET' && req.method !== 'HEAD' && req.method !== 'OPTIONS') {
const origin = req.headers.origin || req.headers.referer;
if (origin) {
try {
const url = new URL(origin);
if (url.origin !== 'http://localhost:3737' && url.origin !== 'http://127.0.0.1:3737') {
return res.status(403).json({ error: 'CSRF' });
}
} catch {
return res.status(403).json({ error: 'CSRF' });
}
}
}
next();
});
router.get('/stats', (_req, res) => {
try {
const stats = getStats();
const active = getActiveSessions();
res.json({ ...stats, activeSessions: active.length });
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
// ── License endpoints ────────────────────────────────────
router.get('/license', (_req, res) => {
try {
res.json(getLicense());
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.post('/license/activate', (req, res) => {
try {
const { key } = req.body;
Eif (!key) return res.status(400).json({ success: false, error: 'Key is required' });
const result = activateLicense(key);
res.json(result);
} catch (e: any) {
res.status(500).json({ success: false, error: e.message });
}
});
router.post('/license/deactivate', (_req, res) => {
try {
deactivateLicense();
res.json({ success: true });
} catch (e: any) {
res.status(500).json({ success: false, error: e.message });
}
});
router.post('/lead', async (req, res) => {
try {
const { email } = req.body;
Eif (!email || !email.includes('@')) {
return res.status(400).json({ error: 'Invalid email' });
}
const SUPABASE_URL = 'https://igmpvdvygkgjilakgslz.supabase.co';
const SUPABASE_ANON_KEY = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6ImlnbXB2ZHZ5Z2tnamlsYWtnc2x6Iiwicm9sZSI6ImFub24iLCJpYXQiOjE3Nzk0NjI1ODAsImV4cCI6MjA5NTAzODU4MH0.iQMMxcRLsh1wJppUZSirsP0TKdDyzWD4aafXPJvFPFg';
const response = await fetch(`${SUPABASE_URL}/rest/v1/leads`, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'apikey': SUPABASE_ANON_KEY,
'Authorization': `Bearer ${SUPABASE_ANON_KEY}`,
'Prefer': 'return=minimal'
},
body: JSON.stringify({ email, source: 'dashboard' })
});
if (!response.ok) {
throw new Error('Failed to capture lead');
}
res.json({ success: true });
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/sessions', (req, res) => {
try {
const limit = parseInt(req.query.limit as string) || 50;
const offset = parseInt(req.query.offset as string) || 0;
const status = (req.query.status as string) || 'all';
const search = (req.query.search as string) || '';
res.json(getSessionsPaginated({ limit, offset, status, search }));
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/sessions/:id', (req, res) => {
try {
const id = parseInt(req.params.id);
if (isNaN(id)) return res.status(400).json({ error: 'Invalid session ID' });
const detail = getSessionDetail(id);
if (!detail) return res.status(404).json({ error: 'Session not found' });
res.json(detail);
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
// ── Diff endpoints ───────────────────────────────────────
// Session diff (all files or single file)
router.get('/sessions/:id/diff', async (req, res) => {
try {
const id = parseInt(req.params.id);
if (isNaN(id)) {
return res.status(400).json({ error: 'Invalid session ID' });
}
const session = getSession(id);
if (!session) {
return res.status(404).json({ error: `Session ${id} not found` });
}
if (!session.gitRoot) {
return res.status(400).json({ error: `Session ${id} has no git repository (not in a git directory)` });
}
Eif (!session.startGitHead) {
return res.status(400).json({ error: `Session ${id} has no start git HEAD (session started before git tracking was enabled)` });
}
const filePath = req.query.file as string | undefined;
const commits = getCommits(id);
const toSha = session.status === 'active' ? null : (commits.length > 0 ? commits[commits.length - 1].hash : null);
const diff = await getGitDiff(session.gitRoot, session.startGitHead, toSha, filePath || undefined);
res.type('text/plain').send(diff || '(no changes)');
} catch (e: any) {
res.status(500).json({ error: `Failed to fetch diff: ${e.message}` });
}
});
// Single commit diff
router.get('/sessions/:id/commits/:hash/diff', async (req, res) => {
try {
const id = parseInt(req.params.id);
if (isNaN(id)) {
return res.status(400).json({ error: 'Invalid session ID' });
}
const session = getSession(id);
if (!session) {
return res.status(404).json({ error: `Session ${id} not found` });
}
Iif (!session.gitRoot) {
return res.status(400).json({ error: `Session ${id} has no git repository` });
}
const hash = req.params.hash;
Eif (!/^[0-9a-fA-F]{4,40}$/.test(hash)) {
return res.status(400).json({ error: 'Invalid commit hash' });
}
const filePath = req.query.file as string | undefined;
const diff = await getCommitDiff(session.gitRoot, hash, filePath || undefined);
res.type('text/plain').send(diff || '(no changes)');
} catch (e: any) {
res.status(500).json({ error: `Failed to fetch commit diff: ${e.message}` });
}
});
// Per-file diff stats (additions/deletions) for a session
router.get('/sessions/:id/diff-stats', async (req, res) => {
try {
const id = parseInt(req.params.id);
if (isNaN(id)) {
return res.status(400).json({ error: 'Invalid session ID' });
}
const session = getSession(id);
if (!session) return res.status(404).json({ error: 'Session not found' });
Eif (!session.gitRoot || !session.startGitHead) {
return res.json([]);
}
const commits = getCommits(id);
const toSha = session.status === 'active' ? null : (commits.length > 0 ? commits[commits.length - 1].hash : null);
const stats = await getGitDiffStats(session.gitRoot, session.startGitHead, toSha);
res.json(stats);
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/daily-costs', (req, res) => {
try {
const days = parseInt(req.query.days as string) || 30;
res.json(getDailyCosts(days));
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/model-breakdown', (_req, res) => {
try {
res.json(getModelBreakdown());
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/top-sessions', (req, res) => {
try {
const limit = parseInt(req.query.limit as string) || 10;
res.json(getTopSessions(limit));
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/provider-breakdown', (_req, res) => {
try {
res.json(getProviderBreakdown());
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/file-hotspots', (req, res) => {
try {
const limit = parseInt(req.query.limit as string) || 50;
res.json(getFileHotspots(limit));
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/activity-heatmap', (_req, res) => {
try {
res.json(getActivityHeatmap());
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/daily-tokens', (req, res) => {
try {
const days = parseInt(req.query.days as string) || 30;
res.json(getDailyTokens(days));
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/cost-velocity', (req, res) => {
try {
const limit = parseInt(req.query.limit as string) || 50;
res.json(getCostVelocity(limit));
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/projects', (_req, res) => {
try {
res.json(getProjectBreakdown());
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/token-ratios', (_req, res) => {
try {
res.json(getTokenRatios());
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/pricing', (_req, res) => {
try {
res.json(loadPricing());
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/export', (req, res) => {
try {
const format = (req.query.format as string) === 'csv' ? 'csv' : 'json';
const limit = parseInt(req.query.limit as string) || undefined;
const data = exportSessions(format, limit);
const mime = format === 'csv' ? 'text/csv' : 'application/json';
const ext = format === 'csv' ? 'csv' : 'json';
res.setHeader('Content-Type', mime);
res.setHeader('Content-Disposition', `attachment; filename="codesession-export.${ext}"`);
res.send(data);
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/version', (_req, res) => {
try {
const pkg = require('../../package.json');
res.json({ version: pkg.version, apiVersion: 1 });
} catch {
res.json({ version: 'unknown', apiVersion: 1 });
}
});
router.post('/reset', (req, res) => {
// Require explicit confirmation header to prevent accidental data loss
if (req.headers['x-confirm-reset'] !== 'yes') {
return res.status(400).json({ error: 'Missing X-Confirm-Reset: yes header. This action permanently deletes all session data.' });
}
try {
clearAllData();
res.json({ ok: true, message: 'All session data cleared' });
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
// ── Feedback ─────────────────────────────────────────────
router.post('/feedback', (req, res) => {
try {
const { type, message, email } = req.body || {};
if (!message || typeof message !== 'string' || message.trim().length === 0) {
return res.status(400).json({ error: 'Message is required' });
}
const validTypes = ['feature', 'bug', 'general', 'question'];
const feedbackType = validTypes.includes(type) ? type : 'general';
const result = addFeedback({
type: feedbackType,
message: message.trim().slice(0, 5000),
email: typeof email === 'string' ? email.trim().slice(0, 200) : undefined,
});
res.json({ ok: true, id: result.id, timestamp: result.timestamp });
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
router.get('/feedback', (_req, res) => {
try {
res.json(getFeedback(100));
} catch (e: any) {
res.status(500).json({ error: e.message });
}
});
return router;
}
// ── Main ───────────────────────────────────────────────────
export function startDashboard(options: DashboardOptions = {}): void {
const port = options.port || 3737;
const host = options.host || '127.0.0.1';
const shouldOpen = options.open !== false;
const jsonMode = options.json === true;
const isExposed = host !== '127.0.0.1' && host !== 'localhost';
// Generate session token for non-localhost binding
const token = isExposed ? randomBytes(24).toString('base64url') : null;
if (isExposed) {
const msg = 'WARNING: Binding to ' + host + ' exposes session data (costs, repo activity, file paths) to your network. Use only on trusted networks.';
if (jsonMode) {
process.stderr.write(JSON.stringify({ warning: msg }) + '\n');
} else {
console.warn(`\n ${msg}\n`);
}
}
const app = express();
// ── Security hardening (inline, no helmet dependency) ────
app.disable('x-powered-by');
app.use((_req: Request, res: Response, next: NextFunction) => {
res.setHeader('X-Content-Type-Options', 'nosniff');
res.setHeader('X-Frame-Options', 'DENY');
res.setHeader('X-XSS-Protection', '0');
res.setHeader('Referrer-Policy', 'no-referrer');
res.setHeader('Permissions-Policy', 'camera=(), microphone=(), geolocation=()');
if (isExposed) {
// Strict CSP only when exposed
res.setHeader('Content-Security-Policy', "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'");
}
next();
});
// JSON body limit (4kb -- we only read, but defence-in-depth)
app.use(express.json({ limit: '50kb' }));
// ── CSRF protection for mutating endpoints ──────────────
// Block cross-origin POST/PUT/DELETE requests to prevent CSRF attacks.
// Any website could otherwise POST to http://127.0.0.1:3737/api/v1/reset.
app.use('/api', (req: Request, res: Response, next: NextFunction) => {
if (req.method === 'GET' || req.method === 'HEAD' || req.method === 'OPTIONS') {
return next();
}
const origin = req.headers.origin;
const referer = req.headers.referer;
// Allow requests with no Origin (curl, Postman, server-to-server)
if (!origin && !referer) return next();
// Allow same-origin requests
const allowed = [`http://localhost:${port}`, `http://127.0.0.1:${port}`, `http://${host}:${port}`];
if (origin && allowed.some(a => origin.startsWith(a))) return next();
if (referer && allowed.some(a => referer.startsWith(a))) return next();
res.status(403).json({ error: 'Cross-origin mutating request blocked (CSRF protection)' });
});
// ── Token auth for non-localhost ─────────────────────────
if (token) {
app.use('/api', (req: Request, res: Response, next: NextFunction) => {
const qToken = req.query.token as string | undefined;
const hToken = req.headers.authorization?.replace(/^Bearer\s+/i, '');
if (qToken === token || hToken === token) {
next();
} else {
res.status(401).json({ error: 'Unauthorized. Provide token via ?token= or Authorization: Bearer <token>' });
}
});
}
// ── Static files with cache headers ──────────────────────
const staticDir = join(__dirname, '../dashboard-ui');
// Hashed assets (js/css with content hash in filename): immutable, 1 year
app.use('/assets', express.static(join(staticDir, 'assets'), {
maxAge: '365d',
immutable: true,
}));
// index.html and other root files: no-cache (always fresh after upgrades)
// index: false prevents serving raw index.html (SPA fallback serves injected version)
app.use(express.static(staticDir, {
maxAge: 0,
index: false,
setHeaders: (res, filePath) => {
if (filePath.endsWith('.html')) {
res.setHeader('Cache-Control', 'no-cache, no-store, must-revalidate');
}
},
}));
// ── API version header on all API responses ──────────────
app.use('/api', (_req: Request, res: Response, next: NextFunction) => {
res.setHeader('X-Codesession-Api-Version', '1');
next();
});
// ── Mount API router at /api/v1 (canonical) and /api (compat alias) ──
const apiRouter = buildApiRouter();
app.use('/api/v1', apiRouter);
app.use('/api', apiRouter);
// ── SPA fallback ─────────────────────────────────────────
// Read index.html once; inject token via <meta> tag (avoids CSP script-src issues)
const indexPath = join(staticDir, 'index.html');
let servedHtml: string;
if (!existsSync(indexPath)) {
// Dashboard UI hasn't been built — serve a helpful error instead of crashing
servedHtml = `<!DOCTYPE html><html><head><title>codesession dashboard</title></head><body style="font-family:system-ui;padding:40px;color:#ccc;background:#1a1a2e">
<h1>Dashboard not built</h1>
<p>Run <code style="color:#00d9ff">npm run build:dashboard</code> first, then restart <code style="color:#00d9ff">cs dashboard</code>.</p>
</body></html>`;
if (!jsonMode) {
console.warn(' Warning: Dashboard UI not found. Run `npm run build:dashboard` first.');
}
} else {
const rawHtml = readFileSync(indexPath, 'utf-8');
servedHtml = token
? rawHtml.replace('</head>', `<meta name="cs-token" content="${token}">\n</head>`)
: rawHtml;
}
// Serve index.html for all known SPA routes so client-side routing works on refresh.
// Using explicit app.get() instead of app.use() catch-all for Express 5 compatibility.
const sendSpa = (_req: Request, res: Response) => {
res.setHeader('Cache-Control', 'no-cache, no-store, must-revalidate');
res.setHeader('Content-Type', 'text/html');
res.send(servedHtml);
};
app.get('/', sendSpa);
app.get('/sessions', sendSpa);
app.get('/sessions/:id', sendSpa);
app.get('/models', sendSpa);
app.get('/insights', sendSpa);
app.get('/alerts', sendSpa);
// ── Port conflict handling & startup ──────────────────────
const startServer = () => {
const server = app.listen(port, host, () => {
const url = `http://localhost:${port}`;
writePidFile(port);
const cleanup = () => { removePidFile(port); process.exit(); };
process.on('SIGINT', cleanup);
process.on('SIGTERM', cleanup);
if (jsonMode) {
const out: Record<string, any> = { url, port, pid: process.pid, host, apiVersion: 1 };
if (token) out.token = token;
console.log(JSON.stringify(out));
} else {
console.log(`\n codesession dashboard -> ${url}`);
if (token) {
console.log(` Session token: ${token}`);
console.log(` Authenticated URL: ${url}?token=${token}`);
}
console.log(' Press Ctrl+C to stop\n');
}
if (shouldOpen && !jsonMode) {
const openUrl = token ? `${url}?token=${token}` : url;
// Use spawn() with argument array to prevent command injection
try {
if (process.platform === 'win32') {
spawn('cmd', ['/c', 'start', '', openUrl], { detached: true, stdio: 'ignore' }).unref();
} else {
const cmd = process.platform === 'darwin' ? 'open' : 'xdg-open';
spawn(cmd, [openUrl], { detached: true, stdio: 'ignore' }).unref();
}
} catch (_) { /* browser open is best-effort */ }
}
});
server.on('error', (err: any) => {
if (err.code === 'EADDRINUSE') {
if (jsonMode) {
console.log(JSON.stringify({ error: 'EADDRINUSE', message: `Port ${port} is in use and could not be freed`, port }));
} else {
console.error(`\n Port ${port} is in use and could not be freed.`);
console.error(` Try: cs dashboard --port ${port + 1}\n`);
}
process.exit(1);
}
throw err;
});
};
isPortInUse(port).then(async (inUse) => {
if (inUse) {
if (!jsonMode) {
console.log(`\n Port ${port} is already in use -- checking for stale dashboard...`);
}
const killed = killOwnStaleProcess(port);
if (killed) {
// Wait for port to be freed, then verify it's actually free before starting
await new Promise(resolve => setTimeout(resolve, 500));
const stillInUse = await isPortInUse(port);
if (!stillInUse) {
startServer();
} else {
// Port still in use after kill - race condition or failed kill
if (jsonMode) {
console.log(JSON.stringify({ error: 'EADDRINUSE', message: `Port ${port} could not be freed`, port }));
} else {
console.error(` Port ${port} could not be freed.`);
console.error(` Try: cs dashboard --port ${port + 1}\n`);
}
process.exit(1);
}
} else {
if (jsonMode) {
console.log(JSON.stringify({ error: 'EADDRINUSE', message: `Port ${port} is in use by another process (not a codesession dashboard)`, port }));
} else {
console.error(` Port ${port} is in use by another process (not a codesession dashboard).`);
console.error(` Try: cs dashboard --port ${port + 1}\n`);
}
process.exit(1);
}
} else {
startServer();
}
});
}
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