feat(chat): догрузка сообщений

2026-06-22 22:03:56 +07:00
parent c945301350
commit ea5bf8cb9e
3 changed files with 211 additions and 16 deletions
@@ -0,0 +1,35 @@
+import '../../backend/modules/messages.dart';
+
+class CachedChatMessages {
+  final List<CachedMessage> messages;
+  final bool reachedStart;
+
+  const CachedChatMessages(this.messages, this.reachedStart);
+}
+
+class MessageSessionCache {
+  static final Map<String, CachedChatMessages> _store = {};
+
+  static String _key(int accountId, int chatId) => '$accountId:$chatId';
+
+  static CachedChatMessages? get(int accountId, int chatId) =>
+      _store[_key(accountId, chatId)];
+
+  static void save(
+    int accountId,
+    int chatId,
+    List<CachedMessage> messages, {
+    required bool reachedStart,
+  }) {
+    if (messages.isEmpty) return;
+    _store[_key(accountId, chatId)] = CachedChatMessages(
+      List<CachedMessage>.of(messages),
+      reachedStart,
+    );
+  }
+
+  static void remove(int accountId, int chatId) =>
+      _store.remove(_key(accountId, chatId));
+
+  static void clearAll() => _store.clear();
+}