[bugfix] fix poll vote count responses on client and fedi API vote creation (#2343)

* increment poll votes *before* enqueuing vote to client API worker

* increment vote counts before federating status update after vote in local poll

* improved vote count calculation during backend -> frontend model conversion

internal/processing/polls/vote.go

@@ -90,6 +90,11 @@ func (p *Processor) PollVote(ctx context.Context, requester *gtsmodel.Account, p
 		return nil, gtserror.NewErrorInternalError(err)
 	}
 
+	// Before enqueuing it, increment the poll
+	// vote counts on the copy attached to the
+	// PollVote (that we also later return).
+	poll.IncrementVotes(choices)
+
 	// Enqueue worker task to handle side-effects of user poll vote(s).
 	p.state.Workers.EnqueueClientAPI(ctx, messages.FromClientAPI{
 		APActivityType: ap.ActivityCreate,
@@ -98,11 +103,6 @@ func (p *Processor) PollVote(ctx context.Context, requester *gtsmodel.Account, p
 		OriginAccount:  requester,
 	})
 
-	// Before returning the converted poll model,
-	// increment the vote counts on our local copy
-	// to get latest, instead of another db query.
-	poll.IncrementVotes(choices)
-
 	// Return converted API model poll.
 	return p.toAPIPoll(ctx, requester, poll)
 }

internal/processing/workers/fromfediapi.go

@@ -233,6 +233,10 @@ func (p *fediAPI) CreatePollVote(ctx context.Context, fMsg messages.FromFediAPI)
 	p.surface.invalidateStatusFromTimelines(ctx, vote.Poll.StatusID)
 
 	if *status.Local {
+		// Before federating it, increment the
+		// poll vote counts on our local copy.
+		status.Poll.IncrementVotes(vote.Choices)
+
 		// These were poll votes in a local status, we need to
 		// federate the updated status model with latest vote counts.
 		if err := p.federate.UpdateStatus(ctx, status); err != nil {

internal/typeutils/internaltofrontend.go

@@ -1310,13 +1310,21 @@ func (c *Converter) PollToAPIPoll(ctx context.Context, requester *gtsmodel.Accou
 	}
 
 	var (
+		options     []apimodel.PollOption
 		totalVotes  int
 		totalVoters int
-		voteCounts  []int
 		ownChoices  []int
 		isAuthor    bool
 	)
 
+	// Preallocate a slice of frontend model poll choices.
+	options = make([]apimodel.PollOption, len(poll.Options))
+
+	// Add the titles to all of the options.
+	for i, title := range poll.Options {
+		options[i].Title = title
+	}
+
 	if requester != nil {
 		// Get vote by requester in poll (if any).
 		vote, err := c.state.DB.GetPollVoteBy(ctx,
@@ -1335,37 +1343,28 @@ func (c *Converter) PollToAPIPoll(ctx context.Context, requester *gtsmodel.Accou
 			// case that counts are hidden.
 			totalVotes = len(vote.Choices)
 			totalVoters = 1
+			for _, choice := range ownChoices {
+				options[choice].VotesCount++
+			}
 		}
 
 		// Check if requester is author of source status.
 		isAuthor = (requester.ID == poll.Status.AccountID)
 	}
 
-	// Preallocate a slice of frontend model poll choices.
-	options := make([]apimodel.PollOption, len(poll.Options))
-
-	// Add the titles to all of the options.
-	for i, title := range poll.Options {
-		options[i].Title = title
-	}
-
 	if isAuthor || !*poll.HideCounts {
 		// A remote status,
 		// the simple route!
 		//
 		// Pull cached remote values.
-		totalVoters = *poll.Voters
-		voteCounts = poll.Votes
-
-		// Accumulate total from all counts.
-		for _, count := range poll.Votes {
-			totalVotes += count
-		}
+		totalVoters = (*poll.Voters)
 
 		// When this is status author, or hide counts
-		// is disabled, set the counts known per vote.
-		for i, count := range voteCounts {
+		// is disabled, set the counts known per vote,
+		// and accumulate all the vote totals.
+		for i, count := range poll.Votes {
 			options[i].VotesCount = count
+			totalVotes += count
 		}
 	}
 
@@ -1373,7 +1372,7 @@ func (c *Converter) PollToAPIPoll(ctx context.Context, requester *gtsmodel.Accou
 		ID:          poll.ID,
 		ExpiresAt:   util.FormatISO8601(poll.ExpiresAt),
 		Expired:     poll.Closed(),
-		Multiple:    *poll.Multiple,
+		Multiple:    (*poll.Multiple),
 		VotesCount:  totalVotes,
 		VotersCount: totalVoters,
 		Voted:       (isAuthor || len(ownChoices) > 0),