feedback para user

src/app/api/register/route.ts

@@ -6,7 +6,15 @@ export async function POST(request: NextRequest, response: NextResponse) {
   try {
     const data = await request.json();
     const encryptedPassword = await bcrypt.hash(data.password, 1);
-    const user = await prisma.user.create({
+    const existingUser = await prisma.user.findUnique({
+      where: { email: data.email },
+    });
+
+    if (existingUser) {
+      return NextResponse.json({ error: "Usuário já existe" }, { status: 400 });
+    }
+
+    await prisma.user.create({
       data: {
         email: data.email,
         name: data.name,

src/app/login/page.tsx

@@ -5,6 +5,7 @@ import TextInput from "@/components/TextInput";
 import APICaller from "@/utils/APICaller";
 import { useRouter } from "next/navigation";
 import { useState } from "react";
+import toast from "react-hot-toast";
 
 export default function Login() {
   const [email, setEmail] = useState("");
@@ -22,6 +23,8 @@ export default function Login() {
       if (response.success) {
         localStorage.setItem("token", response.token);
         router.push("/");
+      } else {
+        toast.error("Usuário ou senha inválidos");
       }
     } catch (error) {
       console.error("Erro ao fazer login:", error);

src/app/register/page.tsx

@@ -26,6 +26,7 @@ export default function Register() {
         toast.success("Registrado com sucesso!");
         router.replace("/login");
       }
+      response.error && toast.error(response.error);
     } catch (error) {
       toast.error("Erro ao registrar!");
       console.error("Error ao registrar:", error);