Restructure codebase to use src directory

src/pages/api/users/register.ts

@@ -0,0 +1,65 @@
+import { setLoginSession } from '@/config/auth/session';
+import { NextApiRequest, NextApiResponse } from 'next';
+import { z } from 'zod';
+import ServerError from '@/config/util/ServerError';
+import { createRouter } from 'next-connect';
+import createNewUser from '@/services/User/createNewUser';
+import CreateUserValidationSchema from '@/services/User/schema/CreateUserValidationSchema';
+import NextConnectOptions from '@/config/nextConnect/NextConnectOptions';
+import findUserByUsername from '@/services/User/findUserByUsername';
+import findUserByEmail from '@/services/User/findUserByEmail';
+import validateRequest from '@/config/nextConnect/middleware/validateRequest';
+import APIResponseValidationSchema from '@/validation/APIResponseValidationSchema';
+
+import sendConfirmationEmail from '@/services/User/sendConfirmationEmail';
+
+interface RegisterUserRequest extends NextApiRequest {
+  body: z.infer<typeof CreateUserValidationSchema>;
+}
+
+const registerUser = async (req: RegisterUserRequest, res: NextApiResponse) => {
+  const [usernameTaken, emailTaken] = await Promise.all([
+    findUserByUsername(req.body.username),
+    findUserByEmail(req.body.email),
+  ]);
+
+  if (usernameTaken) {
+    throw new ServerError(
+      'Could not register a user with that username as it is already taken.',
+      409,
+    );
+  }
+
+  if (emailTaken) {
+    throw new ServerError(
+      'Could not register a user with that email as it is already taken.',
+      409,
+    );
+  }
+
+  const user = await createNewUser(req.body);
+
+  await setLoginSession(res, {
+    id: user.id,
+    username: user.username,
+  });
+
+  await sendConfirmationEmail(user);
+
+  res.status(200).json({
+    success: true,
+    statusCode: 200,
+    message: 'User registered successfully.',
+    payload: user,
+  });
+};
+
+const router = createRouter<
+  RegisterUserRequest,
+  NextApiResponse<z.infer<typeof APIResponseValidationSchema>>
+>();
+
+router.post(validateRequest({ bodySchema: CreateUserValidationSchema }), registerUser);
+
+const handler = router.handler(NextConnectOptions);
+export default handler;