Latest teacher trials script

scripts/analytics/mongodb/queries/latestTeacherTrials.js

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+// Latest teacher trial requests
+
+// Usage:
+// mongo <address>:<port>/<database> <script file> -u <username> -p <password>
+
+var startDay = '2015-10-01';
+var endDay = '2016-10-01';
+print('Date range:', startDay, endDay);
+var userIDs = getTrialRequestApplicants(startDay, endDay);
+print('Trial request applicants found:', userIDs.length);
+var userEmails = getUserEmails(userIDs);
+print('User emails found:', userEmails.length);
+for (var i = 0; i < userEmails.length; i++) {
+  print(userEmails[i]);
+}
+
+function objectIdWithTimestamp(timestamp) {
+  // Convert string date to Date object (otherwise assume timestamp is a date)
+  if (typeof(timestamp) == 'string') timestamp = new Date(timestamp);
+  // Convert date object to hex seconds since Unix epoch
+  var hexSeconds = Math.floor(timestamp/1000).toString(16);
+  // Create an ObjectId with that hex timestamp
+  var constructedObjectId = ObjectId(hexSeconds + "0000000000000000");
+  return constructedObjectId
+}
+
+function getTrialRequestApplicants(startDay, endDay) {
+  var startObj = objectIdWithTimestamp(ISODate(startDay + "T00:00:00.000Z"));
+  var endObj = objectIdWithTimestamp(ISODate(endDay + "T00:00:00.000Z"))
+  var cursor = db['trial.requests'].find(
+    {$and:
+      [
+        {_id: {$gte: startObj}},
+        {_id: {$lt: endObj}}
+      ]
+    },
+    {applicant: 1}
+  );
+
+  var applicantIDs = [];
+  var orphanedTrialRequests = [];
+  while (cursor.hasNext()) {
+    var myDoc = cursor.next();
+    if (myDoc.applicant) {
+      applicantIDs.push(myDoc.applicant);
+    }
+    else {
+      orphanedTrialRequests.push(myDoc._id);
+    }
+  }
+
+  // May have orphaned trial requests due to previous external import of requests from Google form
+  if (orphanedTrialRequests.length > 0) {
+    cursor = db.prepaids.find({'properties.trialRequestID': {$in: orphanedTrialRequests}}, {creator: 1});
+    while (cursor.hasNext()) {
+      var myDoc = cursor.next();
+      if (myDoc.creator) {
+        applicantIDs.push(myDoc.creator);
+      }
+      else {
+        print('No creator!');
+        printjson(myDoc);
+        break;
+      }
+    }
+  }
+
+  return applicantIDs;
+}
+
+function getUserEmails(userIDs) {
+  var cursor = db['users'].find({_id: {$in: userIDs}}, {emailLower: 1});
+
+  var userEmails = [];
+  while (cursor.hasNext()) {
+    var myDoc = cursor.next();
+    if (myDoc.emailLower) {
+      userEmails.push(myDoc.emailLower);
+    }
+  }
+  userEmails.sort()
+  return userEmails;
+}