Update

backend/maintenance/state.js

@@ -0,0 +1,63 @@
+import { getJsonSetting, setJsonSetting } from '../db/settings.js';
+
+const MAINTENANCE_KEY = 'maintenance_mode';
+
+const DEFAULT_STATE = {
+  active: false,
+  message: null,
+  activatedAt: null,
+  updatedAt: null,
+  extra: null
+};
+
+let maintenanceState = loadState();
+
+function loadState() {
+  const saved = getJsonSetting(MAINTENANCE_KEY, null);
+  if (!saved) {
+    const initial = { ...DEFAULT_STATE, updatedAt: new Date().toISOString() };
+    setJsonSetting(MAINTENANCE_KEY, initial);
+    return initial;
+  }
+  return {
+    ...DEFAULT_STATE,
+    ...saved
+  };
+}
+
+function persistState(state) {
+  maintenanceState = {
+    ...DEFAULT_STATE,
+    ...state,
+    updatedAt: new Date().toISOString()
+  };
+  setJsonSetting(MAINTENANCE_KEY, maintenanceState);
+  return maintenanceState;
+}
+
+export function getMaintenanceState() {
+  return { ...maintenanceState };
+}
+
+export function isMaintenanceModeActive() {
+  return Boolean(maintenanceState?.active);
+}
+
+export function activateMaintenanceMode({ message = null, extra = null } = {}) {
+  const now = new Date().toISOString();
+  return persistState({
+    active: true,
+    message,
+    extra,
+    activatedAt: now
+  });
+}
+
+export function deactivateMaintenanceMode({ message = null } = {}) {
+  return persistState({
+    active: false,
+    message,
+    extra: null,
+    activatedAt: null
+  });
+}