Add minimal add-in playgrounds and orchestrator

officeaddin/minimal-playground/server.js

@@ -0,0 +1,45 @@
+// Tiny static server for the minimal playground add-in (HTTPS for Office add-in compatibility)
+require('dotenv').config();
+const express = require('express');
+const https = require('https');
+const fs = require('fs');
+const path = require('path');
+const app = express();
+const port = process.env.ADDIN_PORT || 3003;
+
+app.use(express.static(path.join(__dirname, 'public')));
+app.get('/help.html', (req,res)=> res.send('<h2>Minimal Playground Add-in</h2><p>Sideload manifest to Excel, then open the Add-ins pane and click "Managers UI".</p>'));
+
+// Use office-addin-dev-certs (installed via npx office-addin-dev-certs install)
+const userHome = process.env.USERPROFILE || process.env.HOME;
+const certDir = path.join(userHome, '.office-addin-dev-certs');
+const certPath = path.join(certDir, 'localhost.crt');
+const keyPath = path.join(certDir, 'localhost.key');
+
+let server;
+if (fs.existsSync(certPath) && fs.existsSync(keyPath)) {
+  const httpsOptions = {
+    cert: fs.readFileSync(certPath),
+    key: fs.readFileSync(keyPath)
+  };
+  server = https.createServer(httpsOptions, app);
+  server.listen(port, '0.0.0.0', () => {
+    console.log(`minimal-playground add-in server (HTTPS) listening on https://localhost:${port}`);
+  });
+} else {
+  console.log('No office-addin-dev-certs found. Run: npx office-addin-dev-certs install');
+  server = app.listen(port, '0.0.0.0', () => {
+    console.log(`minimal-playground add-in server (HTTP) listening on http://localhost:${port}`);
+  });
+}
+
+server.on('error', (err) => {
+  console.error('Server error:', err);
+});
+
+// Only handle explicit shutdown signals
+process.on('SIGINT', () => { console.log('Received SIGINT, shutting down...'); server.close(); process.exit(0); });
+process.on('SIGTERM', () => { console.log('Received SIGTERM, shutting down...'); server.close(); process.exit(0); });
+
+// Prevent the process from exiting on its own
+process.stdin.resume();