Created a simple invite system that notifies users via e-mail when a corporate uploads an Excel file with already registered students

src/pages/api/invites/index.ts

@@ -0,0 +1,79 @@
+// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
+import { sendEmail } from "@/email";
+import { app } from "@/firebase";
+import { Invite } from "@/interfaces/invite";
+import { Ticket } from "@/interfaces/ticket";
+import { User } from "@/interfaces/user";
+import { sessionOptions } from "@/lib/session";
+import {
+  collection,
+  doc,
+  getDoc,
+  getDocs,
+  getFirestore,
+  setDoc,
+} from "firebase/firestore";
+import { withIronSessionApiRoute } from "iron-session/next";
+import type { NextApiRequest, NextApiResponse } from "next";
+import ShortUniqueId from "short-unique-id";
+
+const db = getFirestore(app);
+
+export default withIronSessionApiRoute(handler, sessionOptions);
+
+async function handler(req: NextApiRequest, res: NextApiResponse) {
+  if (!req.session.user) {
+    res.status(401).json({ ok: false });
+    return;
+  }
+
+  if (req.method === "GET") await get(req, res);
+  if (req.method === "POST") await post(req, res);
+}
+
+async function get(req: NextApiRequest, res: NextApiResponse) {
+  const snapshot = await getDocs(collection(db, "invites"));
+
+  res.status(200).json(
+    snapshot.docs.map((doc) => ({
+      id: doc.id,
+      ...doc.data(),
+    })),
+  );
+}
+
+async function post(req: NextApiRequest, res: NextApiResponse) {
+  const body = req.body as Invite;
+
+  const shortUID = new ShortUniqueId();
+  await setDoc(doc(db, "invites", body.id || shortUID.randomUUID(8)), body);
+
+  res.status(200).json({ ok: true });
+
+  const invitedRef = await getDoc(doc(db, "users", body.to));
+  if (!invitedRef.exists()) return res.status(404).json({ ok: false });
+
+  const invitedByRef = await getDoc(doc(db, "users", body.from));
+  if (!invitedByRef.exists()) return res.status(404).json({ ok: false });
+
+  const invited = { ...invitedRef.data(), id: invitedRef.id } as User;
+  const invitedBy = { ...invitedByRef.data(), id: invitedByRef.id } as User;
+
+  try {
+    await sendEmail(
+      "receivedInvite",
+      {
+        name: invited.name,
+        corporateName:
+          invitedBy.type === "corporate"
+            ? invitedBy.corporateInformation?.companyInformation?.name ||
+              invitedBy.name
+            : invitedBy.name,
+      },
+      [invited.email],
+      "You have been invited to a group!",
+    );
+  } catch (e) {
+    console.log(e);
+  }
+}