From b8de0f054ba2a2d4bb48916d354a85b821db3e0c Mon Sep 17 00:00:00 2001
From: Christian <christian-pauly@posteo.de>
Date: Fri, 28 Jun 2019 10:32:33 +0000
Subject: [PATCH] [Room] Store prevBatch when requesting history

---
 lib/src/Room.dart       | 3 +++
 lib/src/Store.dart      | 6 ++++++
 test/Timeline_test.dart | 1 +
 3 files changed, 10 insertions(+)

diff --git a/lib/src/Room.dart b/lib/src/Room.dart
index 93bf366..be7291b 100644
--- a/lib/src/Room.dart
+++ b/lib/src/Room.dart
@@ -300,6 +300,9 @@ class Room {
 
     if (resp is ErrorResponse) return;
 
+    prev_batch = resp["end"];
+    client.store?.storeRoomPrevBatch(this);
+
     if (!(resp["chunk"] is List<dynamic> &&
         resp["chunk"].length > 0 &&
         resp["end"] is String)) return;
diff --git a/lib/src/Store.dart b/lib/src/Store.dart
index fdb436c..d66f047 100644
--- a/lib/src/Store.dart
+++ b/lib/src/Store.dart
@@ -149,6 +149,12 @@ class Store {
     return null;
   }
 
+  Future<void> storeRoomPrevBatch(Room room) async {
+    await _db.rawUpdate(
+        "UPDATE Rooms SET prev_batch=? WHERE id=?", [room.prev_batch, room.id]);
+    return null;
+  }
+
   /// Stores a RoomUpdate object in the database. Must be called inside of
   /// [transaction].
   Future<void> storeRoomUpdate(RoomUpdate roomUpdate) {
diff --git a/test/Timeline_test.dart b/test/Timeline_test.dart
index 0af61dd..f25383e 100644
--- a/test/Timeline_test.dart
+++ b/test/Timeline_test.dart
@@ -198,6 +198,7 @@ void main() {
       expect(timeline.events[6].id, "1143273582443PhrSn:example.org");
       expect(timeline.events[7].id, "2143273582443PhrSn:example.org");
       expect(timeline.events[8].id, "3143273582443PhrSn:example.org");
+      expect(room.prev_batch, "t47409-4357353_219380_26003_2265");
     });
   });
 }