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routes.js
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const admin = require('firebase-admin');
const express = require('express');
const asyncHandler = require('express-async-handler');
const postmark = require('postmark');
const axios = require('axios');
const middleware = require('./middleware');
const logger = require('./logger');
const router = express.Router();
const firestore = admin.firestore();
const increment = admin.firestore.FieldValue.increment(1);
const decrement = admin.firestore.FieldValue.increment(-1);
const postmarkClient = new postmark.ServerClient(
process.env.POSTMARK_API_TOKEN
);
const encodeName = (name) => {
return Buffer.from(name).toString('base64');
};
const setRegisteredUser = (name, isAttending) => {
return firestore.collection(`registered-users`).doc(encodeName(name)).set({
name,
isAttending,
timestamp: admin.firestore.FieldValue.serverTimestamp(),
});
};
const removeRegisteredUser = (name) => {
return firestore.collection(`registered-users`).doc(encodeName(name)).delete();
};
const removeAllRegisteredUsers = async (batch) => {
const registeredUsersSnapshot = await firestore.collection(`registered-users`).get();
await Promise.all(registeredUsersSnapshot.docs.map((doc) => batch.delete(doc.ref)));
};
const getExistingUser = async (name) => {
const registeredUserDoc = await firestore.collection(`registered-users`).doc(encodeName(name)).get();
return registeredUserDoc.data();
};
const incrementTop = async (name) => {
const topDocRef = firestore.collection('top').doc(encodeName(name));
const topSnapshot = await topDocRef.get();
if (topSnapshot.exists) {
return topDocRef.update({ count: increment, name });
} else {
return topDocRef.set({ count: 1, name });
}
};
const decrementTop = async (name) => {
const topDocRef = firestore.collection('top').doc(encodeName(name));
const topSnapshot = await topDocRef.get();
if (topSnapshot.exists) {
return topDocRef.update({ count: decrement, name });
}
};
const generateInviteEmailHtml = (user) => {
const encodedName = encodeURIComponent(user.name);
return `
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width"/>
</head>
<body>
<h1>Itercage</h1>
<p>Cageball Nydalen - Mandager kl. 20:00</p>
<p style="font-size: 32px; font-weight: 900;">Starttid kl. 20:00</p>
<h3>Hei ${user.name}</h3>
<p>Bli med på cageball?</p>
<p>
<a href="http://itercage.app.iterate.no?n=${encodedName}&a=y"
style="font-size: 16px; padding: 5px 20px; background-color: #4285f4; color: white; text-decoration: none;">
Jeg er med!
</a>
<a href="http://itercage.app.iterate.no?n=${encodedName}&a=n"
style="margin-left: 16px;">
Jeg kommer ikke
</a>
</p>
<p style="margin-top: 25px;">Se hvem som kommer: <a href="http://itercage.app.iterate.no/">itercage.app.iterate.no</a></p>
<br/>
<p style="font-size: 10px;">Ikke svar på denne eposten. Spørsmål sendes til <a href="mailto:[email protected]">[email protected]</a>.</p>
</body>
</html>`;
};
const sendInvites = async () => {
const usersSnapshot = await firestore.collection(`users`).get();
const emails = usersSnapshot.docs.map((doc) => {
const user = doc.data();
return {
To: user.email,
From: '[email protected]',
Subject: 'Påmelding itercage ⚽',
TextBody: 'Meld deg på cage: https://itercage.app.iterate.no',
HtmlBody: generateInviteEmailHtml(user).replace(/\n/g, ''),
};
});
try {
await postmarkClient.sendEmailBatch(emails)
} catch (e) {
logger.error(e);
}
};
async function getAttendeesCount() {
try {
const registered = await firestore
.collection('registered-users')
.get()
.then((snap) => snap.docs.map((doc) => doc.data()));
const attendees = registered.filter((x) => x.isAttending);
return attendees.length;
} catch (error) {
return '🤷♂️';
}
}
router.post(
'/registered-users',
asyncHandler(async (req, res) => {
const { name, isAttending } = req.body;
const existingUser = await getExistingUser(name);
if (existingUser && existingUser.isAttending === isAttending) {
return res.end();
}
await setRegisteredUser(name, isAttending);
if (isAttending) {
await incrementTop(name);
if (process.env.SLACK_HOOK_URL) {
const count = await getAttendeesCount();
axios.post(process.env.SLACK_HOOK_URL, {
text: `*${name}* er med! ${count} påmeldte`,
blocks: [
{
type: 'section',
text: {
type: 'mrkdwn',
text: `*${name}* er med! 💪\n${count} påmeldte${count === 8 ? ' 🥳' : ''}`,
},
},
],
});
}
} else if (existingUser && existingUser.isAttending && !isAttending) {
await decrementTop(name);
}
res.end();
})
);
router.delete(
'/registered-users',
middleware.validateAuthToken,
asyncHandler(async (req, res) => {
const { name } = req.body;
const existingUser = await getExistingUser(name);
if (!existingUser) {
return res.end();
}
if (existingUser.isAttending) {
await decrementTop(name);
}
await removeRegisteredUser(name);
res.end();
})
);
router.get(
'/send-invites',
middleware.validateAuthToken,
asyncHandler(async (req, res) => {
if (process.env.NODE_ENV === 'production') {
sendInvites();
}
res.end();
})
);
router.get(
'/reset',
middleware.validateAuthToken,
asyncHandler(async (req, res) => {
let batch = firestore.batch();
await removeAllRegisteredUsers(batch);
await batch.commit();
res.end();
})
);
router.get('/email-test', (req, res) => {
res.status(200).send(generateInviteEmailHtml({ name: 'Test Testesen' }));
});
module.exports = router;