Cleanup tasks

crabfit-backend/routes/taskCleanup.js

@@ -0,0 +1,46 @@
+const dayjs = require('dayjs');
+
+module.exports = async (req, res) => {
+  if (req.header('X-Appengine-Cron') === undefined) {
+    return res.status(400).send('This task can only be run from a cron job');
+  }
+
+  const threeMonthsAgo = dayjs().subtract(3, 'month').unix();
+
+  console.log('Running cleanup task at', dayjs().format('h:mma D MMM YYYY'));
+
+	try {
+    // Fetch events that haven't been visited in over 3 months
+    const eventQuery = req.datastore.createQuery(req.types.event).filter('visited', '<', threeMonthsAgo);
+		let oldEvents = (await req.datastore.runQuery(eventQuery))[0];
+
+		if (oldEvents && oldEvents.length > 0) {
+      let oldEventIds = oldEvents.map(e => e[req.datastore.KEY].name);
+      console.log('Found', oldEventIds.length, 'events to remove');
+
+      // Fetch availabilities linked to the events discovered
+      let peopleDiscovered = 0;
+      await Promise.all(oldEventIds.map(async (eventId) => {
+        const peopleQuery = req.datastore.createQuery(req.types.person).filter('eventId', eventId);
+    		let oldPeople = (await req.datastore.runQuery(peopleQuery))[0];
+
+        if (oldPeople && oldPeople.length > 0) {
+          peopleDiscovered += oldPeople.length;
+          await req.datastore.delete(oldPeople.map(person => person[req.datastore.KEY]));
+        }
+      }));
+
+      await req.datastore.delete(oldEvents.map(event => event[req.datastore.KEY]));
+
+      console.log('Cleanup successful:', oldEventIds.length, 'events and', peopleDiscovered, 'people removed');
+
+			res.sendStatus(200);
+		} else {
+      console.log('Found', 0, 'events to remove, ending cleanup');
+			res.sendStatus(404);
+		}
+	} catch (e) {
+		console.error(e);
+		res.sendStatus(404);
+	}
+};