1 files changed, 33 insertions, 0 deletions
diff --git a/src/frontend/gateways/Session.gateway.ts b/src/frontend/gateways/Session.gateway.ts
new file mode 100644
index 0000000..d5791b5
--- /dev/null
+++ b/src/frontend/gateways/Session.gateway.ts
@@ -0,0 +1,33 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+import { v4 } from 'uuid';
+
+interface ISession {
+  userId: string;
+  currencyCode: string;
+}
+
+const sessionKey = 'session';
+const defaultSession = {
+  userId: v4(),
+  currencyCode: 'USD',
+};
+
+const SessionGateway = () => ({
+  getSession(): ISession {
+    if (typeof window === 'undefined') return defaultSession;
+    const sessionString = localStorage.getItem(sessionKey);
+
+    if (!sessionString) localStorage.setItem(sessionKey, JSON.stringify(defaultSession));
+
+    return JSON.parse(sessionString || JSON.stringify(defaultSession)) as ISession;
+  },
+  setSessionValue<K extends keyof ISession>(key: K, value: ISession[K]) {
+    const session = this.getSession();
+
+    localStorage.setItem(sessionKey, JSON.stringify({ ...session, [key]: value }));
+  },
+});
+
+export default SessionGateway();