add files listing

mobile/services/onboardingStorage.ts

@@ -0,0 +1,55 @@
+import { createMMKV } from 'react-native-mmkv';
+import { ONBOARDING_STEPS, CURRENT_ONBOARDING_VERSION, type OnboardingStep } from '../config/onboarding';
+import { safDirectory } from './safDirectory';
+
+const storage = createMMKV({ id: 'vaultdrop-onboarding' });
+
+const COMPLETED_VERSION_KEY = 'completed_version';
+const SEEN_STEPS_KEY = 'seen_steps';
+
+export const onboardingStorage = {
+  getCompletedVersion(): number | undefined {
+    const raw = storage.getNumber(COMPLETED_VERSION_KEY);
+    return raw != null ? raw : undefined;
+  },
+
+  setCompletedVersion(version: number) {
+    storage.set(COMPLETED_VERSION_KEY, version);
+  },
+
+  getSeenSteps(): string[] {
+    const raw = storage.getString(SEEN_STEPS_KEY);
+    if (!raw) return [];
+    return JSON.parse(raw) as string[];
+  },
+
+  markStepSeen(stepId: string) {
+    const seen = this.getSeenSteps();
+    if (!seen.includes(stepId)) {
+      seen.push(stepId);
+      storage.set(SEEN_STEPS_KEY, JSON.stringify(seen));
+    }
+  },
+
+  getPendingSteps(): OnboardingStep[] {
+    const lastVersion = this.getCompletedVersion();
+    const seenIds = this.getSeenSteps();
+    const folders = safDirectory.getAll();
+
+    return ONBOARDING_STEPS.filter((step) => {
+      if (lastVersion != null && step.version <= lastVersion) return false;
+      if (seenIds.includes(step.id)) return false;
+      if (step.condition === 'has_no_folders' && folders.length > 0) return false;
+      return true;
+    });
+  },
+
+  needsOnboarding(): boolean {
+    return this.getPendingSteps().length > 0;
+  },
+
+  reset() {
+    storage.remove(COMPLETED_VERSION_KEY);
+    storage.remove(SEEN_STEPS_KEY);
+  },
+};