first runnable version

front/src/lib/session.ts

@@ -0,0 +1,46 @@
+import type { AuthSession } from './types';
+
+const SESSION_STORAGE_KEY = 'portal-session';
+export const SESSION_EVENT_NAME = 'portal-session-change';
+
+function notifySessionChanged() {
+  if (typeof window !== 'undefined') {
+    window.dispatchEvent(new Event(SESSION_EVENT_NAME));
+  }
+}
+
+export function readStoredSession(): AuthSession | null {
+  if (typeof localStorage === 'undefined') {
+    return null;
+  }
+
+  const rawValue = localStorage.getItem(SESSION_STORAGE_KEY);
+  if (!rawValue) {
+    return null;
+  }
+
+  try {
+    return JSON.parse(rawValue) as AuthSession;
+  } catch {
+    localStorage.removeItem(SESSION_STORAGE_KEY);
+    return null;
+  }
+}
+
+export function saveStoredSession(session: AuthSession) {
+  if (typeof localStorage === 'undefined') {
+    return;
+  }
+
+  localStorage.setItem(SESSION_STORAGE_KEY, JSON.stringify(session));
+  notifySessionChanged();
+}
+
+export function clearStoredSession() {
+  if (typeof localStorage === 'undefined') {
+    return;
+  }
+
+  localStorage.removeItem(SESSION_STORAGE_KEY);
+  notifySessionChanged();
+}