advance

lib/auth/clientAuth.ts

@@ -0,0 +1,36 @@
+import { DEMO_AUTH_EMAIL_COOKIE, DEMO_AUTH_ROLE_COOKIE } from "@/lib/auth/demoAuth";
+
+export type ClientAuthSnapshot = {
+  userId: string;
+  userEmail: string | null;
+  isAuthed: boolean;
+  isTeacher: boolean;
+};
+
+const readCookieMap = (): Map<string, string> =>
+  new Map(
+    document.cookie
+      .split(";")
+      .map((entry) => entry.trim())
+      .filter(Boolean)
+      .map((entry) => {
+        const [key, ...rest] = entry.split("=");
+        return [key, decodeURIComponent(rest.join("="))] as const;
+      }),
+  );
+
+export const readDemoClientAuth = (): ClientAuthSnapshot => {
+  if (typeof document === "undefined") {
+    return { userId: "guest", userEmail: null, isAuthed: false, isTeacher: false };
+  }
+
+  const cookies = readCookieMap();
+  const userEmail = cookies.get(DEMO_AUTH_EMAIL_COOKIE) ?? null;
+  const role = cookies.get(DEMO_AUTH_ROLE_COOKIE) ?? "";
+  return {
+    userId: userEmail ?? "guest",
+    userEmail,
+    isAuthed: Boolean(userEmail),
+    isTeacher: role === "teacher",
+  };
+};