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core: open chat on "new" unread items (contigous unread aread in the end) (#6724)
* core: open chat on "new" unread items (contigous unread aread in the end) * move * ui: match first unread logic with core --------- Co-authored-by: Evgeny @ SimpleX Chat <259188159+evgeny-simplex@users.noreply.github.com>
This commit is contained in:
Evgeny
co-authored by
Evgeny @ SimpleX Chat <259188159+evgeny-simplex@users.noreply.github.com>
Evgeny @ SimpleX Chat <259188159+evgeny-simplex@users.noreply.github.com>
parent
f0a3d163dd
commit
f51d8a5a87
@@ -351,6 +351,13 @@ struct ChatView: View {
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if let openAround = chatModel.openAroundItemId, let index = mergedItems.boxedValue.indexInParentItems[openAround] {
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scrollView.scrollToItem(index)
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} else if let viewedIdx = mergedItems.boxedValue.items.firstIndex(where: { !$0.hasUnread() }) {
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// scroll to first unread after last viewed item (items reversed: 0 = newest)
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if viewedIdx > 0 {
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scrollView.scrollToItem(viewedIdx - 1)
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} else {
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scrollView.scrollToBottom()
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}
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} else if let unreadIndex = mergedItems.boxedValue.items.lastIndex(where: { $0.hasUnread() }) {
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scrollView.scrollToItem(unreadIndex)
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} else {
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+11
-1
@@ -1753,7 +1753,17 @@ fun BoxScope.ChatItemsList(
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val hoveredItemId = remember { mutableStateOf(null as Long?) }
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val listState = rememberUpdatedState(rememberSaveable(chatInfo.id, searchValueIsEmpty.value, resetListState.value, saver = LazyListState.Saver) {
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val openAroundItemId = chatModel.openAroundItemId.value
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val index = mergedItems.value.indexInParentItems[openAroundItemId] ?: mergedItems.value.items.indexOfLast { it.hasUnread() }
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val index = mergedItems.value.indexInParentItems[openAroundItemId] ?: run {
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// scroll to first unread after last viewed item (items reversed: 0 = newest)
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val viewedIdx = mergedItems.value.items.indexOfFirst { !it.hasUnread() }
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if (viewedIdx > 0) {
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viewedIdx - 1
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} else if (viewedIdx < 0) {
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mergedItems.value.items.indexOfLast { it.hasUnread() }
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} else {
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0 // viewed is bottom item, scroll to bottom
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}
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}
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val reportsState = reportsListState
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if (openAroundItemId != null) {
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highlightedItems.value += openAroundItemId
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@@ -0,0 +1,199 @@
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# Initial chat open: jump to last unread block
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## Problem
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When opening a chat with unread messages, the app always scrolls to the oldest unread message (`minUnreadItemId`). For casual group members with hundreds of unreads, this forces them to scroll through the entire backlog to reach new messages.
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The bottom circle scrolls to the latest messages without marking all as read (by design — moderators use this to reply quickly, then return to the top circle to read sequentially). But the next time the chat opens, it jumps back to the oldest unread.
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Users want the initial open to skip old unreads and land on the "new" ones — messages that arrived after their last interaction.
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## Design
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Change `CPInitial` to use a different pivot for `getDirectChatAround'` / `getGroupChatAround'`.
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Currently the pivot is `minUnreadItemId` (absolute first unread). Instead, try `maxViewedItemId` (last non-unread item in sort order) first. If not found, fall back to `minUnreadItemId`. The `getAround'` function is unchanged — it always loads `CRBefore`/`CRAfter` around the pivot and includes it.
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**maxViewedItemId**: the last item in sort order that is not `CISRcvNew`.
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- "Viewed" means received read or sent — any `item_status != CISRcvNew`.
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### Why include works for both pivots
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`getDirectChatAround'` always includes the pivot in the result. When the pivot is maxViewed (a read item), including it adds one extra read item — harmless. The client scrolls to the first unread in the loaded items, which is the first item in `afterCIs` (the new unreads after the gap). The include/exclude distinction is unnecessary.
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### Sort order
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- Groups: `(item_ts, chat_item_id)`
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- Direct chats: `(created_at, chat_item_id)`
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### Cases
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Items in display order (left = oldest/top, right = newest/bottom). U = unread (`CISRcvNew`), R = not unread (read, sent, event).
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**Case 1: Unreads contiguous from bottom, no gap**
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```
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R...R U...U
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↑ maxViewed (last R) used as pivot
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```
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`afterCIs` = the unreads. Same as current behavior.
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**Case 2: Gap, then new unreads at bottom**
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```
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R...R U...U R...R U...U
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↑ maxViewed used as pivot
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```
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`afterCIs` = new unreads only. Skips old unreads. This is the desired improvement.
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**Case 3: Gap at bottom, no new unreads**
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```
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R...R U...U R...R
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↑ maxViewed used as pivot
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```
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`afterCIs` = empty. Items loaded are the latest. Old unreads reachable via top circle.
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**Case 4: All unread**
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```
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U...U
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```
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maxViewed = NULL. Fall back to `minUnreadItemId` as pivot. Current behavior.
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**Case 5: No unreads**
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`maxViewedItemId` returns some item but `minUnreadItemId` returns `Nothing` — no unreads exist. Handled by stats showing zero unreads. `getAround'` loads items around maxViewed, which are the latest items.
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Actually: maxViewed is always found when items exist (every chat has at least sent items or read items unless case 4). So the flow is: maxViewed found → load around it → stats show 0 unreads → client shows latest items.
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### No UI changes needed
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Only `CPInitial` backend logic changes. The top circle, unread counter, unread separator, and all pagination continue to use `minUnreadItemId` as before.
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### Out-of-order delivery
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A late-arriving group message with old `item_ts` but recent `created_at` sorts into the old unread block in display order and gets skipped on initial open. This is acceptable — the top circle still reaches it.
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### Notes (local chat)
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Notes (`getLocalChatInitial_`) have unread handling in code but it's dead — all items are sent, `CISRcvNew` never occurs. No change needed.
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### Open concern
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In case 2, `CRBefore(maxViewed)` loads items before the gap, which may include old unreads. The client's scroll logic finds the first unread in loaded items (`lastIndex(where: hasUnread)` in reversed list), which could be an old unread from `beforeCIs` rather than a new unread from `afterCIs`. To be validated during testing — if problematic, may need client-side adjustment or limiting `beforeCIs` count.
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## Implementation
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### Files to modify
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`src/Simplex/Chat/Store/Messages.hs` — all changes are here.
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### New functions
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#### Direct chats
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```haskell
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-- max viewed item: received read or sent (any item_status != CISRcvNew)
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getContactMaxViewedItemId_ :: DB.Connection -> User -> Contact -> IO (Maybe ChatItemId)
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```
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Query:
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```sql
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SELECT chat_item_id
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FROM chat_items
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WHERE user_id = ? AND contact_id = ? AND item_status != ?
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ORDER BY created_at DESC, chat_item_id DESC
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LIMIT 1
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```
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#### Groups
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```haskell
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-- max viewed item: received read or sent (any item_status != CISRcvNew)
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getGroupMaxViewedItemId_ :: DB.Connection -> User -> GroupInfo -> Maybe GroupChatScopeInfo -> Maybe MsgContentTag -> ExceptT StoreError IO (Maybe ChatItemId)
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```
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Mirrors `queryUnreadGroupItems` structure but with `item_status != ?` instead of `item_status = ?`. Handles the same 4-case scope/content filter dispatch. New function `queryViewedGroupItems`.
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Query (for the no-scope, no-content-filter case):
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```sql
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SELECT chat_item_id
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FROM chat_items
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WHERE user_id = ? AND group_id = ?
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AND group_scope_tag IS NULL AND group_scope_group_member_id IS NULL
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AND item_status != ?
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ORDER BY item_ts DESC, chat_item_id DESC
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LIMIT 1
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```
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### Modified functions
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#### `getDirectChatInitial_`
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Current:
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```haskell
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getDirectChatInitial_ db user ct contentFilter count = do
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liftIO (getContactMinUnreadId_ db user ct) >>= \case
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Just minUnreadItemId -> do
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unreadCount <- liftIO $ getContactUnreadCount_ db user ct
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let stats = emptyChatStats {unreadCount, minUnreadItemId}
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getDirectChatAround' db user ct contentFilter minUnreadItemId count "" stats
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Nothing -> (,Just $ NavigationInfo 0 0) <$> getDirectChatLast_ db user ct contentFilter count ""
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```
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New — only the pivot source changes, rest stays the same:
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```haskell
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getDirectChatInitial_ db user ct contentFilter count = do
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liftIO (getContactMaxViewedItemId_ db user ct >>= maybe (getContactMinUnreadId_ db user ct) (pure . Just)) >>= \case
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Just pivotId -> do
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unreadCount <- liftIO $ getContactUnreadCount_ db user ct
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minUnreadItemId <- fromMaybe 0 <$> liftIO (getContactMinUnreadId_ db user ct)
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let stats = emptyChatStats {unreadCount, minUnreadItemId}
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getDirectChatAround' db user ct contentFilter pivotId count "" stats
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Nothing -> (,Just $ NavigationInfo 0 0) <$> getDirectChatLast_ db user ct contentFilter count ""
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```
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#### `getGroupChatInitial_`
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Same minimal change — only the pivot source:
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```haskell
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getGroupChatInitial_ db user g scopeInfo_ contentFilter count = do
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(getGroupMaxViewedItemId_ db user g scopeInfo_ contentFilter >>= maybe (getGroupMinUnreadId_ db user g scopeInfo_ contentFilter) (pure . Just)) >>= \case
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Just pivotId -> do
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stats <- getGroupStats_ db user g scopeInfo_
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getGroupChatAround' db user g scopeInfo_ contentFilter pivotId count "" stats
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Nothing -> do
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stats <- liftIO $ getStats 0 (0, 0)
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(,Just $ NavigationInfo 0 0) <$> getGroupChatLast_ db user g scopeInfo_ contentFilter count "" stats
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where
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getStats minUnreadItemId (unreadCount, unreadMentions) = do
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reportsCount <- getGroupReportsCount_ db user g False
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pure ChatStats {unreadCount, unreadMentions, reportsCount, minUnreadItemId, unreadChat = False}
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```
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### Summary of all affected functions
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| Function | Change |
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|----------|--------|
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| `getDirectChatInitial_` | Try maxViewed first, fall back to minUnread, same `getAround'` call |
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| `getGroupChatInitial_` | Same |
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| **New:** `getContactMaxViewedItemId_` | MAX non-unread by (created_at DESC, id DESC) |
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| **New:** `getGroupMaxViewedItemId_` | MAX non-unread with scope/filter dispatch |
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| **New:** `queryViewedGroupItems` | Like `queryUnreadGroupItems` but `item_status != ?` |
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Nothing else changes. `getDirectChatAround'`, `getGroupChatAround'`, `getDirectChatAround_`, `getGroupChatAround_`, `getContactMinUnreadId_`, `getGroupMinUnreadId_`, `getContactStats_`, `getGroupStats_`, `getChatItemIDs`, `NavigationInfo` computation, mark-read operations, UI code — all unchanged.
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### Performance
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- `maxViewedItemId` query: scans backward from the largest sort key, skipping unread items. Fast when there are recent read/sent items (the common case). Worst case: all items are unread — returns `Nothing` and falls back to minUnread.
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- All other queries are existing code, same performance.
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- Queries run only during `CPInitial` (chat open). No writes.
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### Testing
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1. Open chat with unreads, no prior interaction → same as current (case 1/4)
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2. Open chat, jump to bottom (marks bottom screen read), close, reopen → lands on new unreads after the gap (case 2)
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3. Open chat, jump to bottom, reply, close, new messages arrive, reopen → lands on new messages (case 2)
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4. Open chat, jump to bottom, close, no new messages, reopen → loads around last viewed item at bottom (case 3)
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5. Open chat, read from top (marks first screen read), close, reopen → lands on next unread after first screen, same as current (case 1)
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6. Group with scope (member support chat) → same behavior with scope filter applied
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7. Group with content filter (reports) → same behavior with content filter applied
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@@ -1303,7 +1303,8 @@ getDirectChatInitial_ db user ct contentFilter count = do
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Just minUnreadItemId -> do
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unreadCount <- liftIO $ getContactUnreadCount_ db user ct
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let stats = emptyChatStats {unreadCount, minUnreadItemId}
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getDirectChatAround' db user ct contentFilter minUnreadItemId count "" stats
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pivotId <- liftIO $ fromMaybe minUnreadItemId <$> getContactMaxViewedItemId_ db user ct
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getDirectChatAround' db user ct contentFilter pivotId count "" stats
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Nothing -> (,Just $ NavigationInfo 0 0) <$> getDirectChatLast_ db user ct contentFilter count ""
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getContactStats_ :: DB.Connection -> User -> Contact -> IO ChatStats
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@@ -1326,6 +1327,21 @@ getContactMinUnreadId_ db User {userId} Contact {contactId} =
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|]
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(userId, contactId, CISRcvNew)
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-- max viewed item: received read or sent (any item_status != CISRcvNew)
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getContactMaxViewedItemId_ :: DB.Connection -> User -> Contact -> IO (Maybe ChatItemId)
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getContactMaxViewedItemId_ db User {userId} Contact {contactId} =
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fmap join . maybeFirstRow fromOnly $
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DB.query
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db
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[sql|
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SELECT chat_item_id
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FROM chat_items
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WHERE user_id = ? AND contact_id = ? AND item_status != ?
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ORDER BY created_at DESC, chat_item_id DESC
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LIMIT 1
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|]
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(userId, contactId, CISRcvNew)
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getContactUnreadCount_ :: DB.Connection -> User -> Contact -> IO Int
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getContactUnreadCount_ db User {userId} Contact {contactId} =
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fromOnly . head
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@@ -1633,7 +1649,8 @@ getGroupChatInitial_ db user g scopeInfo_ contentFilter count = do
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Just minUnreadItemId -> do
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unreadCounts <- getGroupUnreadCount_ db user g scopeInfo_ Nothing
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stats <- liftIO $ getStats minUnreadItemId unreadCounts
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getGroupChatAround' db user g scopeInfo_ contentFilter minUnreadItemId count "" stats
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pivotId <- fromMaybe minUnreadItemId <$> getGroupMaxViewedItemId_ db user g scopeInfo_ contentFilter
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getGroupChatAround' db user g scopeInfo_ contentFilter pivotId count "" stats
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Nothing -> do
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stats <- liftIO $ getStats 0 (0, 0)
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(,Just $ NavigationInfo 0 0) <$> getGroupChatLast_ db user g scopeInfo_ contentFilter count "" stats
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@@ -1652,14 +1669,23 @@ getGroupStats_ db user g scopeInfo_ = do
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getGroupMinUnreadId_ :: DB.Connection -> User -> GroupInfo -> Maybe GroupChatScopeInfo -> Maybe MsgContentTag -> ExceptT StoreError IO (Maybe ChatItemId)
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getGroupMinUnreadId_ db user g scopeInfo_ contentFilter =
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fmap join . maybeFirstRow fromOnly $
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queryUnreadGroupItems db user g scopeInfo_ contentFilter baseQuery orderLimit
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queryUnreadGroupItems db user g scopeInfo_ contentFilter " item_status = ? " baseQuery orderLimit
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where
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baseQuery = "SELECT chat_item_id FROM chat_items WHERE user_id = ? AND group_id = ? "
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orderLimit = " ORDER BY item_ts ASC, chat_item_id ASC LIMIT 1"
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-- max viewed item: received read or sent (any item_status != CISRcvNew)
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getGroupMaxViewedItemId_ :: DB.Connection -> User -> GroupInfo -> Maybe GroupChatScopeInfo -> Maybe MsgContentTag -> ExceptT StoreError IO (Maybe ChatItemId)
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getGroupMaxViewedItemId_ db user g scopeInfo_ contentFilter =
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fmap join . maybeFirstRow fromOnly $
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queryUnreadGroupItems db user g scopeInfo_ contentFilter " item_status != ? " baseQuery orderLimit
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where
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baseQuery = "SELECT chat_item_id FROM chat_items WHERE user_id = ? AND group_id = ? "
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orderLimit = " ORDER BY item_ts DESC, chat_item_id DESC LIMIT 1"
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getGroupUnreadCount_ :: DB.Connection -> User -> GroupInfo -> Maybe GroupChatScopeInfo -> Maybe MsgContentTag -> ExceptT StoreError IO (Int, Int)
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getGroupUnreadCount_ db user g scopeInfo_ contentFilter =
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head <$> queryUnreadGroupItems db user g scopeInfo_ contentFilter baseQuery ""
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head <$> queryUnreadGroupItems db user g scopeInfo_ contentFilter " item_status = ? " baseQuery ""
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where
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baseQuery = "SELECT COUNT(1), COALESCE(SUM(user_mention), 0) FROM chat_items WHERE user_id = ? AND group_id = ? "
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@@ -1671,26 +1697,26 @@ getGroupReportsCount_ db User {userId} GroupInfo {groupId} archived =
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"SELECT COUNT(1) FROM chat_items WHERE user_id = ? AND group_id = ? AND msg_content_tag = ? AND item_deleted = ? AND item_sent = 0"
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(userId, groupId, MCReport_, BI archived)
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queryUnreadGroupItems :: FromRow r => DB.Connection -> User -> GroupInfo -> Maybe GroupChatScopeInfo -> Maybe MsgContentTag -> Query -> Query -> ExceptT StoreError IO [r]
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queryUnreadGroupItems db User {userId} GroupInfo {groupId} scopeInfo_ contentFilter baseQuery orderLimit =
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queryUnreadGroupItems :: FromRow r => DB.Connection -> User -> GroupInfo -> Maybe GroupChatScopeInfo -> Maybe MsgContentTag -> Query -> Query -> Query -> ExceptT StoreError IO [r]
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queryUnreadGroupItems db User {userId} GroupInfo {groupId} scopeInfo_ contentFilter statusCond baseQuery orderLimit =
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case (scopeInfo_, contentFilter) of
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(Nothing, Nothing) ->
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liftIO $
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DB.query
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db
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(baseQuery <> " AND group_scope_tag IS NULL AND group_scope_group_member_id IS NULL AND item_status = ? " <> orderLimit)
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(baseQuery <> " AND group_scope_tag IS NULL AND group_scope_group_member_id IS NULL AND " <> statusCond <> orderLimit)
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(userId, groupId, CISRcvNew)
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(Nothing, Just mcTag) ->
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liftIO $
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DB.query
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db
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(baseQuery <> " AND msg_content_tag = ? AND item_status = ? " <> orderLimit)
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(baseQuery <> " AND msg_content_tag = ? AND " <> statusCond <> orderLimit)
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(userId, groupId, mcTag, CISRcvNew)
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(Just GCSIMemberSupport {groupMember_ = m}, Nothing) ->
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liftIO $
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DB.query
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db
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(baseQuery <> " AND group_scope_tag = ? AND group_scope_group_member_id IS NOT DISTINCT FROM ? AND item_status = ? " <> orderLimit)
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(baseQuery <> " AND group_scope_tag = ? AND group_scope_group_member_id IS NOT DISTINCT FROM ? AND " <> statusCond <> orderLimit)
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(userId, groupId, GCSTMemberSupport_, groupMemberId' <$> m, CISRcvNew)
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(Just _scope, Just _mcTag) ->
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throwError $ SEInternalError "group scope and content filter are not supported together"
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@@ -1197,10 +1197,6 @@ Query: UPDATE connections SET smp_agent_version = ? WHERE conn_id = ?
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Plan:
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SEARCH connections USING PRIMARY KEY (conn_id=?)
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Query: UPDATE deleted_snd_chunk_replicas SET delay = ?, retries = retries + 1, updated_at = ? WHERE deleted_snd_chunk_replica_id = ?
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Plan:
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SEARCH deleted_snd_chunk_replicas USING INTEGER PRIMARY KEY (rowid=?)
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Query: UPDATE messages SET msg_body = x'' WHERE conn_id = ? AND internal_id = ?
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Plan:
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SEARCH messages USING PRIMARY KEY (conn_id=? AND internal_id=?)
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@@ -1209,6 +1205,10 @@ Query: UPDATE ratchets SET ratchet_state = ? WHERE conn_id = ?
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Plan:
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SEARCH ratchets USING PRIMARY KEY (conn_id=?)
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Query: UPDATE rcv_file_chunk_replicas SET delay = ?, retries = retries + 1, updated_at = ? WHERE rcv_file_chunk_replica_id = ?
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Plan:
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SEARCH rcv_file_chunk_replicas USING INTEGER PRIMARY KEY (rowid=?)
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Query: UPDATE rcv_file_chunk_replicas SET received = 1, updated_at = ? WHERE rcv_file_chunk_replica_id = ?
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Plan:
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SEARCH rcv_file_chunk_replicas USING INTEGER PRIMARY KEY (rowid=?)
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|
||||
@@ -3133,6 +3133,16 @@ Query:
|
||||
Plan:
|
||||
SEARCH chat_items USING INDEX idx_chat_items_contact_id (contact_id=?)
|
||||
|
||||
Query:
|
||||
SELECT chat_item_id
|
||||
FROM chat_items
|
||||
WHERE user_id = ? AND contact_id = ? AND item_status != ?
|
||||
ORDER BY created_at DESC, chat_item_id DESC
|
||||
LIMIT 1
|
||||
|
||||
Plan:
|
||||
SEARCH chat_items USING INDEX idx_chat_items_contacts_created_at (user_id=? AND contact_id=?)
|
||||
|
||||
Query:
|
||||
SELECT chat_item_id
|
||||
FROM chat_items
|
||||
@@ -4733,6 +4743,14 @@ Query:
|
||||
Plan:
|
||||
SEARCH protocol_servers USING INTEGER PRIMARY KEY (rowid=?)
|
||||
|
||||
Query:
|
||||
UPDATE rcv_files
|
||||
SET to_receive = 1, user_approved_relays = ?, updated_at = ?
|
||||
WHERE file_id = ?
|
||||
|
||||
Plan:
|
||||
SEARCH rcv_files USING INTEGER PRIMARY KEY (rowid=?)
|
||||
|
||||
Query:
|
||||
UPDATE remote_controllers
|
||||
SET ctrl_device_name = ?, dh_priv_key = ?, prev_dh_priv_key = dh_priv_key
|
||||
@@ -6043,7 +6061,7 @@ Query: SELECT COUNT(1) FROM groups WHERE user_id = ? AND chat_item_ttl > 0
|
||||
Plan:
|
||||
SEARCH groups USING INDEX idx_groups_chat_ts (user_id=?)
|
||||
|
||||
Query: SELECT COUNT(1), COALESCE(SUM(user_mention), 0) FROM chat_items WHERE user_id = ? AND group_id = ? AND group_scope_tag IS NULL AND group_scope_group_member_id IS NULL AND item_status = ?
|
||||
Query: SELECT COUNT(1), COALESCE(SUM(user_mention), 0) FROM chat_items WHERE user_id = ? AND group_id = ? AND group_scope_tag IS NULL AND group_scope_group_member_id IS NULL AND item_status = ?
|
||||
Plan:
|
||||
SEARCH chat_items USING COVERING INDEX idx_chat_items_group_scope_stats_all (user_id=? AND group_id=? AND group_scope_tag=? AND group_scope_group_member_id=? AND item_status=?)
|
||||
|
||||
@@ -6085,7 +6103,11 @@ Query: SELECT chat_item_id FROM chat_items WHERE user_id = ? AND contact_id = ?
|
||||
Plan:
|
||||
SEARCH chat_items USING INDEX idx_chat_items_direct_shared_msg_id (user_id=? AND contact_id=? AND shared_msg_id=?)
|
||||
|
||||
Query: SELECT chat_item_id FROM chat_items WHERE user_id = ? AND group_id = ? AND group_scope_tag IS NULL AND group_scope_group_member_id IS NULL AND item_status = ? ORDER BY item_ts ASC, chat_item_id ASC LIMIT 1
|
||||
Query: SELECT chat_item_id FROM chat_items WHERE user_id = ? AND group_id = ? AND group_scope_tag IS NULL AND group_scope_group_member_id IS NULL AND item_status != ? ORDER BY item_ts DESC, chat_item_id DESC LIMIT 1
|
||||
Plan:
|
||||
SEARCH chat_items USING INDEX idx_chat_items_group_scope_item_ts (user_id=? AND group_id=? AND group_scope_tag=? AND group_scope_group_member_id=?)
|
||||
|
||||
Query: SELECT chat_item_id FROM chat_items WHERE user_id = ? AND group_id = ? AND group_scope_tag IS NULL AND group_scope_group_member_id IS NULL AND item_status = ? ORDER BY item_ts ASC, chat_item_id ASC LIMIT 1
|
||||
Plan:
|
||||
SEARCH chat_items USING COVERING INDEX idx_chat_items_group_scope_item_status (user_id=? AND group_id=? AND group_scope_tag=? AND group_scope_group_member_id=? AND item_status=?)
|
||||
|
||||
|
||||
Reference in New Issue
Block a user