Refactored a bunch of shit

src/pages/api/auth/signup.ts

@@ -7,6 +7,7 @@ import {
   siteSettings,
 } from "../../../db/schema";
 import { hashPassword, createSession } from "../../../lib/auth";
+import { isValidEmail, MAX_LENGTHS } from "../../../lib/validation";
 import { eq, count, sql } from "drizzle-orm";
 import { nanoid } from "nanoid";
 
@@ -37,6 +38,18 @@ export const POST: APIRoute = async ({ request, cookies, redirect }) => {
     return redirect("/signup?error=missing_fields");
   }
 
+  if (!isValidEmail(email)) {
+    return redirect("/signup?error=invalid_email");
+  }
+
+  if (name.length > MAX_LENGTHS.name) {
+    return redirect("/signup?error=name_too_long");
+  }
+
+  if (password.length > MAX_LENGTHS.password) {
+    return redirect("/signup?error=password_too_long");
+  }
+
   if (password.length < 8) {
     return redirect("/signup?error=password_too_short");
   }
@@ -47,7 +60,7 @@ export const POST: APIRoute = async ({ request, cookies, redirect }) => {
     .where(eq(users.email, email))
     .get();
   if (existingUser) {
-    return redirect("/signup?error=user_exists");
+    return redirect("/login?registered=true");
   }
 
   const passwordHash = await hashPassword(password);