Not sure what happened here...

frontend/src/api/client.ts

@@ -26,3 +26,53 @@ export async function fetchTimetable(from_date: string, to_date: string, day_sta
 export async function fetchWakeSleepTimes(from_date: string, to_date: string, wakeup_ref: string, bedtime_ref: string): Promise<any> {
   return fetchStats('wake-sleep-times', from_date, to_date, { wakeup_ref, bedtime_ref });
 }
+
+// Session API functions
+export async function fetchActiveSession(): Promise<SleepSessionRead | null> {
+  const response = await fetch(`${BASE_URL}/api/sessions/active`);
+  if (!response.ok) return null;
+  return response.json();
+}
+
+export async function fetchSessions(): Promise<SessionListResponse> {
+  const response = await fetch(`${BASE_URL}/api/sessions`);
+  if (!response.ok) throw new Error('Failed to fetch sessions');
+  return response.json();
+}
+
+export async function createSession(payload: SleepSessionCreate): Promise<SleepSessionRead> {
+  const response = await fetch(`${BASE_URL}/api/sessions`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify(payload),
+  });
+  if (!response.ok) throw new Error('Failed to create session');
+  return response.json();
+}
+
+export async function endSession(sessionId: number, payload: SleepSessionUpdate): Promise<SleepSessionRead> {
+  const response = await fetch(`${BASE_URL}/api/sessions/${sessionId}/end`, {
+    method: 'PATCH',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify(payload),
+  });
+  if (!response.ok) throw new Error('Failed to end session');
+  return response.json();
+}
+
+export async function deleteSession(sessionId: number): Promise<void> {
+  const response = await fetch(`${BASE_URL}/api/sessions/${sessionId}`, {
+    method: 'DELETE',
+  });
+  if (!response.ok) throw new Error('Failed to delete session');
+}
+
+export async function updateSession(sessionId: number, payload: SleepSessionUpdate): Promise<SleepSessionRead> {
+  const response = await fetch(`${BASE_URL}/api/sessions/${sessionId}`, {
+    method: 'PATCH',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify(payload),
+  });
+  if (!response.ok) throw new Error('Failed to update session');
+  return response.json();
+}