Remove orphans task

crabfit-backend/routes/taskCleanup.js

@@ -1,6 +1,10 @@
 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')}`);

crabfit-backend/routes/taskLegacyCleanup.js

@@ -1,6 +1,10 @@
 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 LEGACY cleanup task at ${dayjs().format('h:mma D MMM YYYY')}`);

crabfit-backend/routes/taskRemoveOrphans.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 orphan removal task at ${dayjs().format('h:mma D MMM YYYY')}`);
+
+	try {
+    // Fetch people that are older than 3 months
+    const peopleQuery = req.datastore.createQuery(req.types.person).filter('created', '<', threeMonthsAgo);
+		let oldPeople = (await req.datastore.runQuery(peopleQuery))[0];
+
+		if (oldPeople && oldPeople.length > 0) {
+      console.log(`Found ${oldPeople.length} people older than 3 months, checking for events`);
+
+      // Fetch events linked to the people discovered
+      let peopleWithoutEvents = 0;
+      await Promise.all(oldPeople.map(async (person) => {
+        let event = (await req.datastore.get(req.datastore.key([req.types.event, person.eventId])))[0];
+
+        if (!event) {
+          peopleWithoutEvents++;
+          await req.datastore.delete(person[req.datastore.KEY]);
+        }
+      }));
+
+      if (peopleWithoutEvents > 0) {
+        console.log(`Orphan removal successful: ${oldEventIds.length} events and ${peopleDiscovered} people removed`);
+        res.sendStatus(200);
+      } else {
+        console.log(`Found 0 people without events, ending orphan removal`);
+  			res.sendStatus(404);
+      }
+		} else {
+      console.log(`Found 0 people older than 3 months, ending orphan removal`);
+			res.sendStatus(404);
+		}
+	} catch (e) {
+		console.error(e);
+		res.sendStatus(404);
+	}
+};