update

backend/app/main.py

@@ -5,7 +5,7 @@ from fastapi import FastAPI, Header, HTTPException
 from pydantic import BaseModel
 
 from . import db
-from .config import BASE_COLLECTIONS, COLLECTIONS, SYNC_TOKEN
+from .config import BASE_COLLECTIONS, COLLECTIONS, FILES_PAGE_BYTES, SYNC_TOKEN
 
 logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)s %(message)s")
 log = logging.getLogger("app")
@@ -68,11 +68,19 @@ def sync(body: SyncIn, authorization: str = Header(default="")):
                 else:
                     rejected[collection].append(stored)
         out = {}
+        cursor = db.cursor(conn)
         for collection in body.requested:
-            changed = db.since(conn, collection, body.since)
+            if collection == "files":
+                # Dateien sind groß: nur ein Paket, der Stand bleibt beim letzten gelieferten Eintrag
+                changed, last, more = db.since_paged(conn, collection, body.since, FILES_PAGE_BYTES)
+                if more:
+                    out["more"] = True
+                    cursor = min(cursor, last)
+            else:
+                changed = db.since(conn, collection, body.since)
             ids = {item["id"] for item in changed}
             out[collection] = changed + [item for item in rejected[collection] if item["id"] not in ids]
-        out["cursor"] = db.cursor(conn)
+        out["cursor"] = cursor
     if accepted:
         log.info("sync: %d Einträge übernommen", accepted)
     return out