Switch to tRPC (#173)

src/utils/auth.ts

@@ -0,0 +1,83 @@
+import {
+  IronSession,
+  IronSessionOptions,
+  sealData,
+  unsealData,
+} from "iron-session";
+import { withIronSessionApiRoute, withIronSessionSsr } from "iron-session/next";
+import { GetServerSideProps, NextApiHandler } from "next";
+
+import { prisma } from "~/prisma/db";
+import { randomid } from "./nanoid";
+
+const sessionOptions: IronSessionOptions = {
+  password: process.env.SECRET_PASSWORD,
+  cookieName: "rallly-session",
+  cookieOptions: {
+    secure: process.env.NODE_ENV === "production",
+  },
+  ttl: 0, // basically forever
+};
+
+export function withSessionRoute(handler: NextApiHandler) {
+  return withIronSessionApiRoute(handler, sessionOptions);
+}
+
+export function withSessionSsr(handler: GetServerSideProps) {
+  return withIronSessionSsr(handler, sessionOptions);
+}
+
+export const decryptToken = async <P extends Record<string, unknown>>(
+  token: string,
+): Promise<P> => {
+  return await unsealData(token, { password: sessionOptions.password });
+};
+
+export const createToken = async <T extends Record<string, unknown>>(
+  payload: T,
+) => {
+  return await sealData(payload, {
+    password: sessionOptions.password,
+    ttl: 60 * 15, // 15 minutes
+  });
+};
+
+export const createGuestUser = async (session: IronSession) => {
+  session.user = {
+    id: `user-${await randomid()}`,
+    isGuest: true,
+  };
+  await session.save();
+};
+
+// assigns participants and comments created by guests to a user
+// we could have multiple guests because a login might be triggered from one device
+// and opened in another one.
+export const mergeGuestsIntoUser = async (
+  userId: string,
+  guestIds: string[],
+) => {
+  await prisma.participant.updateMany({
+    where: {
+      guestId: {
+        in: guestIds,
+      },
+    },
+    data: {
+      guestId: null,
+      userId: userId,
+    },
+  });
+
+  await prisma.comment.updateMany({
+    where: {
+      guestId: {
+        in: guestIds,
+      },
+    },
+    data: {
+      guestId: null,
+      userId: userId,
+    },
+  });
+};