create admin form

src/Web.ts

@@ -41,21 +41,21 @@ class Web {
     initialize = async () => {
         // const options = this.options;
         const app: Express = this.app = express();
+        const installPath = process.env['installstat'] || process.env['INSTALLSTAT'] || path.join(process.cwd(), 'config', 'installs.json');
         try {
-            this.installs = JSON.parse(await fsp.readFile(process.env['config'] || process.env['CONFIG'] || path.join(process.cwd(), 'config', 'installs.json'), 'utf-8'));
+            this.installs = JSON.parse(await fsp.readFile(installPath, 'utf-8'));
         }
-        catch(ex) {
+        catch (ex) {
             console.error(ex);
             this.installs = [];
         }
-        
+
 
         app.set('trust proxy', 1);
         app.set('view engine', 'ejs');
         app.set('view options', { outputFunctionName: 'echo' });
         app.use('/assets', express.static('assets', { maxAge: '30 days' }));
         app.use(bodyParser.json());
-        app.use(bodyParser.urlencoded({ extended: true }));
         app.use((_req, res, next) => {
             crypto.randomBytes(32, (err, randomBytes) => {
                 if (err) {
@@ -72,11 +72,15 @@ class Web {
             res.send('Healthy');
         });
 
+        const adminParam = process.env['ADMINPARAM'];
+        const adminPass = process.env['ADMINPASS'];
+
         app.get('/', (req, res) => {
+            const adminMode = adminParam && adminPass && adminParam in req.query && req.query[adminParam] === adminPass;
             if (req.query?.['utm_medium']) {
                 console.log(`${req.query['utm_medium']} | ${req.headers?.['user-agent']}`);
             }
-            else {
+            else if(!adminMode){
                 console.log(req.headers?.['user-agent']);
             }
             res.render('index', {
@@ -87,10 +91,28 @@ class Web {
                 },
                 date: DATE,
                 installs: this.installs,
-                time: TIME
+                time: TIME,
+                adminMode
             });
         });
 
+        app.post('/', async (req, res) => {
+            const adminMode = adminParam && adminPass && adminParam in req.query && req.query[adminParam] === adminPass;
+            if (!adminMode) {
+                res.redirect('/');
+                return;
+            }
+            const submit = req.body;
+            if (!('os' in submit && 'form' in submit)) {
+                res.status(400).send('bad request');
+                return;
+            }
+            this.installs.push(submit);
+            console.log(`updating ${installPath}`);
+            await fsp.writeFile(installPath, JSON.stringify(this.installs, null, 2));
+            res.send('ok');
+        });
+
         app.get('/os', (_, res) => {
             res.render('os', {
                 page: {