feat: backend for sending event reminders 📆

CONTRIBUTORS.yml

@@ -48,6 +48,7 @@
 - poughe
 - katlj
 - rafa1510
+- imnotrafa
 - Meron-b
 - gxsoto
 - mcdev92

packages/core/src/modules/event/use-cases/send-event-reminder.ts

@@ -0,0 +1,43 @@
+import { db } from '@oyster/db';
+import { type Event } from '@oyster/types';
+import { listEventAttendees } from '@/member-profile.server';
+import { sendEmail } from '@/modules/notification/use-cases/send-email';
+import { StudentActivatedEmail } from '@oyster/email-templates';
+export async function eventReminder(input: Event) {
+
+  //selects students who are undergrad
+  let RegisteredStudentIDs: string[] = [];
+  const eventAttendees = await listEventAttendees({
+    select: ['eventAttendees.studentId', 'students.email'],
+    where: {
+      eventId: input.id,
+    },
+  });
+
+  //extract student id for the event attendee
+  eventAttendees.forEach((attendee) => {
+    if (attendee.studentId) {
+      RegisteredStudentIDs.push(attendee.studentId);
+    }
+  });
+
+  //filter down to just the undergrads that are not register for the event
+  const unregisteredStudents = await db
+    .selectFrom('students')
+    .select(['students.email', 'students.firstName'])
+    .where('educationLevel', '=', 'undergraduate')
+    .where('id', 'not in', RegisteredStudentIDs)
+    .execute();
+
+  //Must change the name of the email template being used based on the prupose of the function
+  //TODO: create an email tenplate for event reminders
+  unregisteredStudents.forEach((student) => {
+    sendEmail({
+      name: 'application-accepted',
+      to: student.email,
+      data: {
+        firstName: student.firstName,
+      },
+    });
+  });
+}