From 20bff8b713044ab8fa8c2382a32316c9a1b4bcbf Mon Sep 17 00:00:00 2001
From: Dan Ballard <dan@mindstab.net>
Date: Fri, 3 Dec 2021 17:15:47 -0800
Subject: [PATCH] messagecache stub

---
 lib/models/messagecache.dart | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 lib/models/messagecache.dart

diff --git a/lib/models/messagecache.dart b/lib/models/messagecache.dart
new file mode 100644
index 00000000..5b697c38
--- /dev/null
+++ b/lib/models/messagecache.dart
@@ -0,0 +1,26 @@
+import 'dart:collection';
+
+import 'package:cwtch/widgets/messagerow.dart';
+import 'package:flutter/material.dart';
+
+int MinCacheSize = 20;
+
+class MessageCache extends ChangeNotifier {
+  final String profile;
+
+  Queue<MessageRowState> cacheByIndex = Queue();
+  Map<int, MessageRowState> cacheById = Map();
+
+  MessageCache(this.profile) {}
+
+  // So we internall need to fetch by N (new libcwtch API)
+  // then double store by index and id to support both calls
+  // monitor activeConversation for unlimited growth and when
+  // change to not active convo, trigger a shrink
+  // bonus: dont prune cache by id messages refed in core list
+
+  GetMessageByIndex(conversationIdentifier, index);
+
+  GetMessageById(conversationIdentifier, index);
+
+}