fix_: code review

protocol/messenger_mailserver.go

@@ -815,10 +815,11 @@ loop:
 				// If time range is greater than 24 hours, limit the range: to - (to-24h)
 				from := w.from
 				to := w.to
-				nextWorkTo := to
+
+				exceeds24h := false
 				if batch.To-batch.From > uint32(oneDayDuration.Seconds()) {
 					from = to - uint32(oneDayDuration.Seconds())
-					nextWorkTo = from
+					exceeds24h = true
 				}
 
 				cursor, envelopesCount, err := messageRequester.SendMessagesRequestForTopics(queryCtx, storenodeID, from, to, w.cursor, w.pubsubTopic, w.contentTopics, w.limit, true, processEnvelopes)
@@ -843,21 +844,31 @@ loop:
 
 				// Check the cursor after calling `shouldProcessNextPage`.
 				// The app might use process the fetched envelopes in the callback for own needs.
-				if cursor == nil {
+				// If from/to does not exceed 24h and no cursor was returned, we have already
+				// requested the entire time range
+				if cursor == nil && !exceeds24h {
 					return
 				}
 
 				logger.Debug("processBatch producer - creating work (cursor)")
 
-				workWg.Add(1)
-				workCh <- work{
+				newWork := work{
 					pubsubTopic:   w.pubsubTopic,
 					contentTopics: w.contentTopics,
 					cursor:        cursor,
 					limit:         nextPageLimit,
 					from:          w.from,
-					to:            nextWorkTo,
+					to:            w.to,
 				}
+
+				// If from/to has exceeded the 24h, but there are no more records within the current
+				// 24h range, then we update the `to` for the new work to not include it.
+				if cursor == nil && exceeds24h {
+					newWork.to = from
+				}
+
+				workWg.Add(1)
+				workCh <- newWork
 			}(w)
 		case err := <-errCh:
 			logger.Debug("processBatch - received error", zap.Error(err))