const cbor = require('borc');
const assert = require('assert');
// Create WebSocket connection.
const ws = new WebSocket('ws://localhost:40000');
ws.binaryType = 'arraybuffer';

// handle user auth within the socket itself
// https://www.christian-schneider.net/CrossSiteWebSocketHijacking.html
let user = null;

function user_login(res) {
    [struct, created] = res;

    user = created;

    console.log(created);
    return send({ method: 'cryp_generate', params: { level: 64 }});
}

function new_cryp(cryp) {
    console.log('got a new cryp');
}

const handlers = {
    'cryp_generate': new_cryp,
    'user_login': user_login,
    'user_create': user_login,
};

function receive(res) {
    if (res.err) return console.error(res.err);
    const { method, params } = res;
    return handlers[method](params);
}

function send(msg) {
    msg.token = user && user.token;
    ws.send(cbor.encode(msg));
}

// Connection opened
ws.addEventListener('open', function (event) {
    send({ method: 'user_create', params: { name: 'somebodyelse', password: 'grepgrepgrep' }});
});

// Listen for messages
ws.addEventListener('message', function (event) {
    console.log('Message from server ', event.data);
    const blob = new Uint8Array(event.data);
    const decoded = cbor.decode(blob);
    console.log(decoded);
    return receive(decoded);
});

ws.addEventListener('error', function (event) {
    console.error('WebSocket error', event);
    user = null;
});

ws.addEventListener('close', function (event) {
    console.error('WebSocket closed', event);
    user = null;
});