Created
June 13, 2018 04:33
-
-
Save viniciusCamargo/40ae91d92998c2030019cc5808acf243 to your computer and use it in GitHub Desktop.
firestore chat poc
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<html> | |
<header> | |
<title>firestore realtime vanillajs</title> | |
</header> | |
<body> | |
<h1>new message</h1> | |
<div id="messages"></div> | |
<form id="form"> | |
<label for="message">message</label> | |
<input type="text" name="message" id="message" autocomplete="off" /> | |
<input type="submit" value="send"> | |
</form> | |
<script src="https://www.gstatic.com/firebasejs/5.0.4/firebase-app.js"></script> | |
<script src="https://www.gstatic.com/firebasejs/5.0.4/firebase-firestore.js"></script> | |
<script src="https://www.gstatic.com/firebasejs/5.0.4/firebase-storage.js"></script> | |
<script src="index.js"></script> | |
</body> | |
</html> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
const config = { | |
apiKey: '', | |
authDomain: '', | |
databaseURL: '', | |
projectId: '', | |
storageBucket: '', | |
messagingSenderId: '' | |
} | |
firebase.initializeApp(config) | |
const firestore = firebase.firestore() | |
firestore.settings({ timestampsInSnapshots: true }) | |
const collection = firestore.collection('messages') | |
const set = (o) => { | |
collection | |
.add(o) | |
.then((doc) => console.log('message sent')) | |
.catch(console.error) | |
} | |
const realtimeQuery = (cb) => { | |
collection | |
.where('created_at', '>', new Date().getTime()) | |
.orderBy('created_at') | |
.onSnapshot((snapshot) => { | |
snapshot.docChanges().forEach((change) => { | |
if (change.type === 'added') { | |
document.body.scrollIntoView(false) | |
cb(change.doc.data()) | |
} | |
}) | |
}) | |
} | |
const addMessage = (message) => { | |
const messages = document.querySelector('#messages') | |
const str = ` | |
<div id=${message.id}> | |
<h3> | |
${message.user} - ${new Date(message.created_at).toISOString()} | |
</h3> | |
<p>${message.message}</p> | |
</div> | |
` | |
messages.insertAdjacentHTML('beforeend', str) | |
} | |
const form = document.querySelector('#form') | |
const inputText = document.querySelector('#message') | |
form.addEventListener('submit', (e) => { | |
e.preventDefault() | |
const message = inputText.value | |
if (message) { | |
set({ | |
message, | |
user: 'vanillajs', | |
created_at: new Date().getTime() | |
}) | |
inputText.value = '' | |
} else { | |
throw new Error('empty message') | |
} | |
}) | |
realtimeQuery((message) => { | |
console.log('new message', message) | |
addMessage(message) | |
}) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment