Redesign WatchLink application UI

src/lib/user-actions.ts

@@ -2,8 +2,9 @@
 
 import { compare, hash } from "bcryptjs";
 import { redirect } from "next/navigation";
+import { Prisma, type User } from "@prisma/client";
 import { prisma } from "./prisma";
-import { setSession } from "./session";
+import { clearSession, setSession } from "./session";
 
 function normalizeUsername(value: FormDataEntryValue | null) {
   return String(value || "")
@@ -17,24 +18,33 @@ export async function registerUser(formData: FormData) {
   const password = String(formData.get("password") || "");
 
   if (!username || password.length < 10) {
-    throw new Error("Username is required and password must be at least 10 characters.");
+    redirect("/register?error=invalid");
   }
 
   const passwordHash = await hash(password, 12);
-  const user = await prisma.user.create({
-    data: {
-      username,
-      displayName: username,
-      passwordHash,
-      ownedRooms: {
-        create: {
-          slug: `@${username}`,
-          name: `${username}'s room`,
-          visibility: "FRIENDS"
+  let user: User;
+
+  try {
+    user = await prisma.user.create({
+      data: {
+        username,
+        displayName: username,
+        passwordHash,
+        ownedRooms: {
+          create: {
+            slug: `@${username}`,
+            name: `${username}'s room`,
+            visibility: "FRIENDS"
+          }
         }
       }
+    });
+  } catch (error) {
+    if (error instanceof Prisma.PrismaClientKnownRequestError && error.code === "P2002") {
+      redirect("/register?error=username");
     }
-  });
+    throw error;
+  }
 
   await setSession(user.id);
   redirect("/dashboard");
@@ -46,14 +56,19 @@ export async function loginUser(formData: FormData) {
 
   const user = await prisma.user.findUnique({ where: { username } });
   if (!user) {
-    throw new Error("Invalid username or password.");
+    redirect("/login?error=credentials");
   }
 
   const ok = await compare(password, user.passwordHash);
   if (!ok) {
-    throw new Error("Invalid username or password.");
+    redirect("/login?error=credentials");
   }
 
   await setSession(user.id);
   redirect("/dashboard");
 }
+
+export async function logoutUser() {
+  await clearSession();
+  redirect("/login");
+}