local conversion

site/src/lib/localstore.ts

@@ -0,0 +1,89 @@
+/**
+ * IndexedDB helper for local activity storage.
+ *
+ * Activities converted on-device are written here. The service worker (sw.js)
+ * reads from the same database and merges local activities into the feed.
+ */
+
+const DB_NAME    = 'bincio';
+const DB_VERSION = 1;
+const STORE      = 'files';
+
+function openDB(): Promise<IDBDatabase> {
+  return new Promise((resolve, reject) => {
+    const req = indexedDB.open(DB_NAME, DB_VERSION);
+    req.onupgradeneeded = e =>
+      (e.target as IDBOpenDBRequest).result.createObjectStore(STORE, { keyPath: 'path' });
+    req.onsuccess = e => resolve((e.target as IDBOpenDBRequest).result);
+    req.onerror   = e => reject((e.target as IDBOpenDBRequest).error);
+  });
+}
+
+async function idbPut(path: string, data: unknown): Promise<void> {
+  const db = await openDB();
+  return new Promise((resolve, reject) => {
+    const tx = db.transaction(STORE, 'readwrite');
+    tx.objectStore(STORE).put({ path, data });
+    tx.oncomplete = () => resolve();
+    tx.onerror    = e => reject((e.target as IDBTransaction).error);
+  });
+}
+
+async function idbGet<T>(path: string): Promise<T | null> {
+  const db = await openDB();
+  return new Promise((resolve, reject) => {
+    const req = db.transaction(STORE, 'readonly').objectStore(STORE).get(path);
+    req.onsuccess = e => resolve((e.target as IDBRequest).result?.data ?? null);
+    req.onerror   = e => reject((e.target as IDBRequest).error);
+  });
+}
+
+// ── Public API ────────────────────────────────────────────────────────────────
+
+/** Save a converted activity to IndexedDB and update the local summary index. */
+export async function saveActivityLocally(
+  detail:  Record<string, unknown>,
+  geojson: Record<string, unknown> | null,
+): Promise<void> {
+  const id = detail.id as string;
+
+  await idbPut(`/data/activities/${id}.json`, detail);
+  if (geojson) {
+    await idbPut(`/data/activities/${id}.geojson`, geojson);
+  }
+
+  // Maintain a flat list of local summaries (read by the service worker)
+  const existing = (await idbGet<ActivitySummary[]>('/data/local-index')) ?? [];
+  const summary  = toSummary(detail);
+  const idx = existing.findIndex(a => a.id === id);
+  if (idx >= 0) existing[idx] = summary; else existing.push(summary);
+  await idbPut('/data/local-index', existing);
+}
+
+/** Return all locally-stored activity summaries. */
+export async function listLocalActivities(): Promise<ActivitySummary[]> {
+  return (await idbGet<ActivitySummary[]>('/data/local-index')) ?? [];
+}
+
+/** Return true if at least one activity is stored locally. */
+export async function hasLocalActivities(): Promise<boolean> {
+  const list = await listLocalActivities();
+  return list.length > 0;
+}
+
+// ── Helpers ───────────────────────────────────────────────────────────────────
+
+type ActivitySummary = Record<string, unknown>;
+
+const SUMMARY_KEYS = [
+  'id', 'title', 'sport', 'sub_sport', 'started_at', 'distance_m',
+  'duration_s', 'moving_time_s', 'elevation_gain_m', 'avg_speed_kmh',
+  'avg_hr_bpm', 'avg_cadence_rpm', 'avg_power_w', 'privacy',
+  'detail_url', 'track_url', 'preview_coords',
+] as const;
+
+function toSummary(detail: Record<string, unknown>): ActivitySummary {
+  return Object.fromEntries(
+    SUMMARY_KEYS.filter(k => k in detail).map(k => [k, detail[k]])
+  );
+}