MM-35392 Load thread unreads for other teams on app load (#17944)

* Add ability to include thread unreads in team unreads api response

* Do not include GMs/DMs in team unreads for threads

* Fix bad merge

app/team.go

@@ -1654,7 +1654,7 @@ func (a *App) FindTeamByName(name string) bool {
 	return true
 }
 
-func (a *App) GetTeamsUnreadForUser(excludeTeamId string, userID string) ([]*model.TeamUnread, *model.AppError) {
+func (a *App) GetTeamsUnreadForUser(excludeTeamId string, userID string, includeCollapsedThreads bool) ([]*model.TeamUnread, *model.AppError) {
 	data, err := a.Srv().Store.Team().GetChannelUnreadsForAllTeams(excludeTeamId, userID)
 	if err != nil {
 		return nil, model.NewAppError("GetTeamsUnreadForUser", "app.team.get_unread.app_error", nil, err.Error(), http.StatusInternalServerError)
@@ -1681,17 +1681,29 @@ func (a *App) GetTeamsUnreadForUser(excludeTeamId string, userID string) ([]*mod
 			membersMap[id] = unreads(data[i], mu)
 		} else {
 			membersMap[id] = unreads(data[i], &model.TeamUnread{
-				MsgCount:         0,
-				MentionCount:     0,
-				MentionCountRoot: 0,
-				MsgCountRoot:     0,
-				TeamId:           id,
+				MsgCount:           0,
+				MentionCount:       0,
+				MentionCountRoot:   0,
+				MsgCountRoot:       0,
+				ThreadCount:        0,
+				ThreadMentionCount: 0,
+				TeamId:             id,
 			})
 		}
 	}
 
-	for _, val := range membersMap {
-		members = append(members, val)
+	includeCollapsedThreads = includeCollapsedThreads && *a.Config().ServiceSettings.CollapsedThreads != model.COLLAPSED_THREADS_DISABLED
+
+	for _, member := range membersMap {
+		if includeCollapsedThreads {
+			data, err := a.Srv().Store.Thread().GetThreadsForUser(userID, member.TeamId, model.GetUserThreadsOpts{TotalsOnly: true, TeamOnly: true})
+			if err != nil {
+				return nil, model.NewAppError("GetTeamsUnreadForUser", "app.team.get_unread.app_error", nil, err.Error(), http.StatusInternalServerError)
+			}
+			member.ThreadCount = data.TotalUnreadThreads
+			member.ThreadMentionCount = data.TotalUnreadMentions
+		}
+		members = append(members, member)
 	}
 
 	return members, nil