Update README.md

README.md

@@ -37,6 +37,38 @@
 # How to install:
 * Download the project and connect it to your firebase.
 * It would be better if your project is (Blaze plan) because the project uses functions and you need to upload this code.
+```
+const functions = require("firebase-functions");
+const admin = require('firebase-admin');
+admin.initializeApp(functions.config().firestore);
+exports.scheduledFunction = functions.pubsub.schedule('every 30 minutes').onRun((context) => {
+    // current time in miilis
+    const timeMillis = admin.firestore.Timestamp.now().toMillis();
+    console.log(timeMillis);
+    admin.firestore().collection('Stories').where('expiryDate', '<=', timeMillis).get()
+        .then((snapshot) => {
+            snapshot.docs.forEach((data) => {
+                console.log("Name: " + data.get('username'));
+                console.log("ID: " + data.get('id'));
+                console.log("UID: " + data.get('uid'));
+                admin.firestore().collection('Stories').doc(data.id).delete();
+            });
+        }).catch((error) => {
+            console.log("Error: " + error);
+        });
+
+    return null;
+});
+exports.onStoryUpload = functions.firestore.document('Stories/{storyID}')
+    .onCreate((snapshot, context) => {
+        var data = snapshot.data();
+        const timeMillis = admin.firestore.Timestamp.now().toMillis();
+        const expiryDate = timeMillis + (24 * 60 * 60 * 1000);
+        admin.firestore().collection('Stories').doc(data.id).update({
+            "expiryDate": expiryDate,
+        });
+    });
+```
 * If your plan is spark the project will work fine **except that the users stories will be always available not only for 24 hours**.
 
 # Technologies & Open-source libraries