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import * as http from 'http';
import * as websocket from 'websocket';
import * as redis from 'redis';
import config from '../conf';
import User from './models/user';
import AccessToken from './models/access-token';
import isNativeToken from './common/is-native-token';
import homeStream from './stream/home';
import messagingStream from './stream/messaging';
module.exports = (server: http.Server) => {
/**
* Init websocket server
*/
const ws = new websocket.server({
httpServer: server
});
ws.on('request', async (request) => {
const connection = request.accept();
const user = await authenticate(connection, request.resourceURL.query.i);
if (user == null) {
connection.send('authentication-failed');
connection.close();
return;
}
// Connect to Redis
const subscriber = redis.createClient(
config.redis.port, config.redis.host);
connection.on('close', () => {
subscriber.unsubscribe();
subscriber.quit();
});
const channel =
request.resourceURL.pathname === '/' ? homeStream :
request.resourceURL.pathname === '/messaging' ? messagingStream :
null;
if (channel !== null) {
channel(request, connection, subscriber, user);
} else {
connection.close();
}
});
};
function authenticate(connection: websocket.connection, token: string): Promise<any> {
if (token == null) {
return Promise.resolve(null);
}
return new Promise(async (resolve, reject) => {
if (isNativeToken(token)) {
// Fetch user
// SELECT _id
const user = await User
.findOne({
token: token
}, {
fields: {
_id: true
}
});
resolve(user);
} else {
const accessToken = await AccessToken.findOne({
hash: token
});
if (accessToken == null) {
return reject('invalid signature');
}
// Fetch user
// SELECT _id
const user = await User
.findOne({ _id: accessToken.user_id }, {
fields: {
_id: true
}
});
resolve(user);
}
});
}
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