New getRecentStoryReplies function to clean up replies in multiple convos

ts/sql/Server.ts

@@ -93,6 +93,7 @@ import type {
   GetAllStoriesResultType,
   GetConversationRangeCenteredOnMessageResultType,
   GetKnownMessageAttachmentsResultType,
+  GetRecentStoryRepliesOptionsType,
   GetUnreadByConversationAndMarkReadResultType,
   IdentityKeyIdType,
   StoredIdentityKeyType,
@@ -251,6 +252,7 @@ const dataInterface: ServerInterface = {
 
   getMessageCount,
   getStoryCount,
+  getRecentStoryReplies,
   saveMessage,
   saveMessages,
   removeMessage,
@@ -2530,6 +2532,53 @@ enum AdjacentDirection {
   Newer = 'Newer',
 }
 
+async function getRecentStoryReplies(
+  storyId: string,
+  options?: GetRecentStoryRepliesOptionsType
+): Promise<Array<MessageTypeUnhydrated>> {
+  return getRecentStoryRepliesSync(storyId, options);
+}
+
+// This function needs to pull story replies from all conversations, because when we send
+//   a story to one or more distribution lists, each reply to it will be in the sender's
+//   1:1 conversation with us.
+function getRecentStoryRepliesSync(
+  storyId: string,
+  {
+    limit = 100,
+    messageId,
+    receivedAt = Number.MAX_VALUE,
+    sentAt = Number.MAX_VALUE,
+  }: GetRecentStoryRepliesOptionsType = {}
+): Array<MessageTypeUnhydrated> {
+  const db = getInstance();
+  const timeFilters = {
+    first: sqlFragment`received_at = ${receivedAt} AND sent_at < ${sentAt}`,
+    second: sqlFragment`received_at < ${receivedAt}`,
+  };
+
+  const createQuery = (timeFilter: QueryFragment): QueryFragment => sqlFragment`
+    SELECT json FROM messages WHERE
+      (${messageId} IS NULL OR id IS NOT ${messageId}) AND
+      isStory IS 0 AND
+      storyId IS ${storyId} AND
+      (
+        ${timeFilter}
+      )
+      ORDER BY received_at DESC, sent_at DESC
+  `;
+
+  const template = sqlFragment`
+    SELECT first.json FROM (${createQuery(timeFilters.first)}) as first
+    UNION ALL
+    SELECT second.json FROM (${createQuery(timeFilters.second)}) as second
+  `;
+
+  const [query, params] = sql`${template} LIMIT ${limit}`;
+
+  return db.prepare(query).all(params);
+}
+
 function getAdjacentMessagesByConversationSync(
   direction: AdjacentDirection,
   {