feat: add sync mode setting — summaries only vs full data download

mobile/db/sync.ts

@@ -1,7 +1,7 @@
 import type { SQLiteDatabase } from 'expo-sqlite';
 import { getSetting, upsertRemoteActivity } from './queries';
 
-export type SyncResult = { synced: number; total: number; error?: string };
+export type SyncResult = { synced: number; total: number; fetched?: number; error?: string };
 
 export async function syncFeed(db: SQLiteDatabase): Promise<SyncResult> {
   const instanceUrl = (await getSetting(db, 'instance_url'))?.replace(/\/$/, '');
@@ -30,6 +30,8 @@ export async function syncFeed(db: SQLiteDatabase): Promise<SyncResult> {
   const data: { activities?: RemoteSummary[] } = await resp.json();
   const activities = data.activities ?? [];
 
+  const syncMode = (await getSetting(db, 'sync_mode')) ?? 'summaries';
+
   let synced = 0;
   for (const a of activities) {
     const detailJson = JSON.stringify({
@@ -48,7 +50,46 @@ export async function syncFeed(db: SQLiteDatabase): Promise<SyncResult> {
     if (changed) synced++;
   }
 
-  return { synced, total: activities.length };
+  if (syncMode !== 'full') {
+    return { synced, total: activities.length };
+  }
+
+  // Full mode: fetch geojson + timeseries for any activity missing them
+  const headers = { Authorization: `Bearer ${token}` };
+  let fetched = 0;
+  for (const a of activities) {
+    const row = db.getFirstSync<{ g: number; t: number }>(
+      'SELECT (geojson IS NOT NULL) as g, (timeseries_json IS NOT NULL) as t FROM activities WHERE id = ?',
+      [a.id],
+    );
+    if (row?.g && row?.t) continue;
+
+    let gj: string | null = null;
+    let ts: string | null = null;
+    try {
+      if (!row?.g) {
+        const r = await fetch(`${instanceUrl}/api/activity/${a.id}/geojson`, { headers });
+        if (r.ok) gj = await r.text();
+      }
+      if (!row?.t) {
+        const r = await fetch(`${instanceUrl}/api/activity/${a.id}/timeseries`, { headers });
+        if (r.ok) ts = await r.text();
+      }
+    } catch {}
+
+    if (gj !== null || ts !== null) {
+      await db.runAsync(
+        `UPDATE activities SET
+           geojson        = COALESCE(geojson,        ?),
+           timeseries_json = COALESCE(timeseries_json, ?)
+         WHERE id = ? AND origin = 'remote'`,
+        [gj, ts, a.id],
+      );
+      fetched++;
+    }
+  }
+
+  return { synced, total: activities.length, fetched };
 }
 
 type RemoteSummary = {