Initial WatchLink scaffold

src/lib/user-actions.ts

@@ -0,0 +1,59 @@
+"use server";
+
+import { compare, hash } from "bcryptjs";
+import { redirect } from "next/navigation";
+import { prisma } from "./prisma";
+import { setSession } from "./session";
+
+function normalizeUsername(value: FormDataEntryValue | null) {
+  return String(value || "")
+    .trim()
+    .toLowerCase()
+    .replace(/[^a-z0-9_-]/g, "");
+}
+
+export async function registerUser(formData: FormData) {
+  const username = normalizeUsername(formData.get("username"));
+  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.");
+  }
+
+  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"
+        }
+      }
+    }
+  });
+
+  await setSession(user.id);
+  redirect("/dashboard");
+}
+
+export async function loginUser(formData: FormData) {
+  const username = normalizeUsername(formData.get("username"));
+  const password = String(formData.get("password") || "");
+
+  const user = await prisma.user.findUnique({ where: { username } });
+  if (!user) {
+    throw new Error("Invalid username or password.");
+  }
+
+  const ok = await compare(password, user.passwordHash);
+  if (!ok) {
+    throw new Error("Invalid username or password.");
+  }
+
+  await setSession(user.id);
+  redirect("/dashboard");
+}