add clear lineup/availabilities, availability reminders

src/controllers/eventlineup.js

@@ -164,4 +164,33 @@ const processPostedEventLineupEntries = (body, eventLineupEntries, eventLineup)
     }
   })
   return {newEventLineupEntries, eventLineupEntries, deleteEventLineupEntries}
+}
+
+exports.submitDeleteEventLineupEntries = async (req,res) => {
+  await Promise.all(req.promises);
+  const {event_lineup, event_lineup_entries} = req
+  let event_id
+  let memberIds
+
+  if (!req.body || ! (req.body.event_id && req.body.memberIds)) {
+    res.status(400).send('Malformed post')
+  } else if (req.params.event_id != req.body.event_id) {
+    // Load actual event. Do I want this to be an error? probably
+    res.status(400).send('Event ID parameter does not match the POST body');
+    return
+  } else {
+    event_id = req.body.event_id
+    memberIds = req.body.memberIds
+  }
+
+  const deletion_promises = []
+
+  event_lineup_entries.filter(entry =>memberIds.includes(entry.memberId.toString())).forEach( entry => {
+    const promise = teamsnap.deleteEventLineupEntry(entry, teamsnapCallback)
+    deletion_promises.push(promise)
+  })
+
+  await Promise.all(deletion_promises)
+  .then(res.status(202).send('OK'))
+
 }