Files
watchparty/functions/index.js
T

98 lines
3.4 KiB
JavaScript

const functions = require('firebase-functions');
const admin = require('firebase-admin');
const secret = require('./FirebaseSecret.json');
const express = require('express');
const cors = require('cors');
const authenticator = (req,res,next) => {
if (req.method === 'OPTIONS') {
res.status(200).send();
return next();
}
const token = req.headers.authorization.split(' ')[1];
const reqToken = token.split(':')[0];
const reqUid = token.split(':')[1];
admin.auth().verifyIdToken(reqToken).then( user => {
if (user.uid === reqUid) {
console.log('Verified Token - UID - ', reqUid);
if (req.method === 'POST') {
const bodydata = JSON.parse(req.body);
bodydata.uid = user.uid;
req.body = JSON.stringify(bodydata);
}
if (req.method === 'GET') {
req.body = JSON.stringify({uid: user.uid});
}
return next();
} else {
return res.status(401).send('Unauthorized');
}
}).catch(err => {
console.log('Failed Auth - ', req.headers.authorization, '\n', err);
return res.status(500).send(err);
});
return null;
};
const createRoom = async (req,res) => {
const bodydata = JSON.parse(req.body);
console.log('Requested Create - UID - ', bodydata.uid);
if (!bodydata.userName) res.status(400).send('Missing user name');
const roomId = await admin.firestore().collection('rooms').add({
name: bodydata.roomName,
createdAt: new Date().toISOString(),
updatedAt: new Date().toISOString(),
}).then(ref => ref.id)
.catch(err => {
console.error(err);
});
await admin.firestore().collection('rooms').doc(roomId).collection('messages').add({
uid: '<system>',
name: '',
text: `${bodydata.userName} started the party.`,
time: new Date().toISOString(),
});
await admin.firestore().collection('rooms').doc(roomId).collection('users').doc(bodydata.uid).set({
admin: true,
name: bodydata.userName,
});
res.status(201).send({ roomId });
}
const joinRoom = async (req, res) => {
const bodydata = JSON.parse(req.body);
console.log('Requested Create - UID - ', bodydata.uid, '\n\tRoom - ', bodydata.roomId);
const exists = await admin.firestore().collection('rooms').doc(bodydata.roomId).get().then(roomSnap => roomSnap.exists);
const userExists = await admin.firestore().collection('rooms').doc(bodydata.roomId).collection('users').doc(bodydata.uid).get().then(userSnap => userSnap.exists);
if (userExists) return res.status(200).send({roomId: bodydata.roomId});
if (exists && bodydata.roomId && bodydata.userName) {
await admin.firestore().collection('rooms').doc(bodydata.roomId).collection('messages').add({
uid: '<system>',
name: '',
text: `${bodydata.userName} joined the party.`,
time: new Date().toISOString(),
});
await admin.firestore().collection('rooms').doc(bodydata.roomId).collection('users').doc(bodydata.uid).set({
admin: false,
name: bodydata.userName,
});
res.status(200).send({roomId: bodydata.roomId});
}
if (!bodydata.userName) res.status(400).send('Missing user name');
else res.status(404).send('Party Not Found');
}
const app = express();
app.use(cors({origin: true}));
app.use(authenticator);
admin.initializeApp({
credential: admin.credential.cert(secret),
databaseURL: "https://watch-party-crx.firebaseio.com"
});
app.post('/create', createRoom);
app.post('/join', joinRoom);
exports.widgets = functions.https.onRequest(app);