// module connect
const express = require('express');
const protobuf = require('protobufjs');


const app = express();
const port = 3000;


app.use(express.json());


app.post('/create_user', (request, response) => {
    const descriptor = request.body; // JSON-дескриптор из тела запроса
    console.log('[*] Received descriptor:', JSON.stringify(descriptor));

    try {
        const root = protobuf.Root.fromJSON(descriptor);
        const UserType = root.lookupType('User');
        const userBytes = Buffer.from([0x08, 0x01, 0x12, 0x07, 0x0a, 0x05, 0x68, 0x65, 0x6c, 0x6c, 0x6f]);
        try {
            const user = UserType.decode(userBytes); // <- code execution
        }
        catch (e) { }

    } catch (err) {
        console.error('[!] Error:', err.message);
        response.status(500).json({ status: 'error', message: err.message });
    }
})


app.listen(port, () => {
    console.log('[*] Server listening on port ${port}');
});