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refactor(chat): replace message sync with soft resync scheduling

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Remove useMessageSync hook from App initialization
Introduce scheduleSoftResync to respect cooldowns before resyncs
Preserve hasMoreAbove handling and totalAvailableMessages for loading older messages
This commit is contained in:
Bohdan Triapitsyn
2026-01-29 01:12:00 +02:00
parent 9064e8e73f
commit bc28fa9ac8
4 changed files with 125 additions and 317 deletions
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packages/ui/src/stores/messageStore.ts
+28 -8
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@@ -398,6 +398,10 @@ export const useMessageStore = create<MessageStore>()(
const revertMessageId = getSessionRevertMessageId(sessionId);
const messagesWithoutReverted = filterRevertedMessages(allMessages, revertMessageId);
// If we fetched more than we keep (usually via buffer), there are older messages above.
// This intentionally ignores watermark filtering so "Load older" can remain available.
const hasMoreAbove = messagesWithoutReverted.length > targetLimit;
const watermark = get().sessionMemoryState.get(sessionId)?.trimmedHeadMaxId;
const afterWatermark = watermark
@@ -485,8 +489,8 @@ export const useMessageStore = create<MessageStore>()(
isStreaming: false,
lastAccessedAt: Date.now(),
backgroundMessageCount: 0,
totalAvailableMessages: allMessages.length,
hasMoreAbove: allMessages.length > messagesToKeep.length,
totalAvailableMessages: previousMemoryState?.totalAvailableMessages,
hasMoreAbove,
trimmedHeadMaxId: previousMemoryState?.trimmedHeadMaxId,
streamingCooldownUntil: undefined,
});
@@ -2257,6 +2261,9 @@ export const useMessageStore = create<MessageStore>()(
const updatedMemoryState = {
...memoryState,
viewportAnchor: anchor - start,
// If we trimmed older messages out of the in-memory window,
// keep "Load older" available even if the last fetch didn't exceed its limit.
hasMoreAbove: Boolean(memoryState.hasMoreAbove) || start > 0,
trimmedHeadMaxId: computeMaxTrimmedHeadId(removedOlder, memoryState.trimmedHeadMaxId),
};
newMemoryState.set(sessionId, updatedMemoryState);
@@ -2402,11 +2409,18 @@ export const useMessageStore = create<MessageStore>()(
return;
}
if (memoryState.totalAvailableMessages && currentMessages.length >= memoryState.totalAvailableMessages) {
return;
}
const memLimits = getMemoryLimits();
// OpenCode may default to "last N" when limit is omitted.
// For "Load older" we progressively increase the tail window.
const desiredLimit = Math.max(
currentMessages.length + memLimits.VIEWPORT_MESSAGES + memLimits.FETCH_BUFFER,
memLimits.HISTORICAL_MESSAGES + memLimits.FETCH_BUFFER,
);
const allMessages = await executeWithSessionDirectory(sessionId, () => opencodeClient.getSessionMessages(sessionId));
const allMessages = await executeWithSessionDirectory(
sessionId,
() => opencodeClient.getSessionMessages(sessionId, desiredLimit)
);
if (direction === "up" && currentMessages.length > 0) {
const dedupedMessages = dedupeMessagesById(allMessages);
@@ -2430,7 +2444,10 @@ export const useMessageStore = create<MessageStore>()(
...memoryState,
viewportAnchor: memoryState.viewportAnchor + addedCount,
hasMoreAbove: indexInAll - loadCount > 0,
totalAvailableMessages: dedupedMessages.length,
totalAvailableMessages: Math.max(
memoryState.totalAvailableMessages ?? 0,
dedupedMessages.length
),
});
return {
@@ -2444,7 +2461,10 @@ export const useMessageStore = create<MessageStore>()(
newMemoryState.set(sessionId, {
...memoryState,
hasMoreAbove: false,
totalAvailableMessages: dedupedMessages.length,
totalAvailableMessages: Math.max(
memoryState.totalAvailableMessages ?? 0,
dedupedMessages.length
),
});
return { sessionMemoryState: newMemoryState };
});