Implement authentication using Passport.js

services/user/createNewUser.ts

@@ -0,0 +1,49 @@
+import findUserByUsername from '@/services/user/findUserByUsername';
+import { hashPassword } from '@/config/auth/passwordFns';
+import DBClient from '@/prisma/DBClient';
+import { z } from 'zod';
+import ServerError from '@/config/util/ServerError';
+import CreateUserValidationSchema from './schema/CreateUserValidationSchema';
+
+const createNewUser = async ({
+  email,
+  password,
+  firstName,
+  lastName,
+  dateOfBirth,
+  username,
+}: z.infer<typeof CreateUserValidationSchema>) => {
+  const userExists = await findUserByUsername(username);
+
+  if (userExists) {
+    throw new ServerError(
+      "Could not register a user with that username as it's already taken.",
+      409,
+    );
+  }
+
+  const hash = await hashPassword(password);
+  const user = DBClient.instance.user.create({
+    data: {
+      username,
+      email,
+      hash,
+      firstName,
+      lastName,
+      dateOfBirth: new Date(dateOfBirth),
+    },
+    select: {
+      id: true,
+      username: true,
+      email: true,
+      firstName: true,
+      lastName: true,
+      dateOfBirth: true,
+      createdAt: true,
+    },
+  });
+
+  return user;
+};
+
+export default createNewUser;