Further optimize getConversationMessageStats

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Fedor Indutny 2023-01-17 16:44:22 -08:00 committed by GitHub
parent 1c22fe653c
commit efc54e44c4
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@ -2735,35 +2735,44 @@ function getLastConversationPreview({
conversationId: string;
includeStoryReplies: boolean;
}): MessageType | undefined {
type Row = Readonly<{
json: string;
received_at: number;
sent_at: number;
}>;
const db = getInstance();
const row = prepare(
db,
`
SELECT json FROM messages
const queryTemplate = (extraClause: string): string => {
return `
SELECT json, received_at, sent_at FROM messages
INDEXED BY messages_preview
WHERE
conversationId IS $conversationId AND
shouldAffectPreview IS 1 AND
isGroupLeaveEventFromOther IS 0 AND
${includeStoryReplies ? '' : 'storyId IS NULL AND'}
(
expiresAt IS NULL
OR
expiresAt > $now
)
${extraClause}
ORDER BY received_at DESC, sent_at DESC
LIMIT 1
`;
};
const row: Row | undefined = prepare(
db,
`
SELECT * FROM (${queryTemplate('expiresAt IS NULL')})
UNION ALL
SELECT * FROM (${queryTemplate('expiresAt > $now')})
ORDER BY received_at DESC, sent_at DESC
LIMIT 1;
`
`
).get({
conversationId,
now: Date.now(),
});
if (!row) {
return undefined;
}
return jsonToObject(row.json);
return row ? jsonToObject(row.json) : undefined;
}
async function getConversationMessageStats({