[MM-43917] Cloud Freemium limits API: messages/posts (#20152)

* WIP - Add api and app funcs

* Add test cases

* Add utils testcases

* Exclude deleted posts

* Add doc for func

* Move api from cloud to usage

* Allow api access to authenticated users

* Change int to int64

* Fix lint issue

* Simplify err check

Co-authored-by: Ashish Bhate <ashish.bhate@mattermost.com>

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>
Co-authored-by: Ashish Bhate <ashish.bhate@mattermost.com>

store/sqlstore/post_store.go

@@ -2128,25 +2128,29 @@ func (s *SqlPostStore) AnalyticsPostCountsByDay(options *model.AnalyticsPostCoun
 	return rows, nil
 }
 
-func (s *SqlPostStore) AnalyticsPostCount(teamId string, mustHaveFile bool, mustHaveHashtag bool) (int64, error) {
+func (s *SqlPostStore) AnalyticsPostCount(options *model.PostCountOptions) (int64, error) {
 	query := s.getQueryBuilder().
 		Select("COUNT(p.Id) AS Value").
 		From("Posts p")
 
-	if teamId != "" {
+	if options.TeamId != "" {
 		query = query.
 			Join("Channels c ON (c.Id = p.ChannelId)").
-			Where(sq.Eq{"c.TeamId": teamId})
+			Where(sq.Eq{"c.TeamId": options.TeamId})
 	}
 
-	if mustHaveFile {
+	if options.MustHaveFile {
 		query = query.Where(sq.Or{sq.NotEq{"p.FileIds": "[]"}, sq.NotEq{"p.Filenames": "[]"}})
 	}
 
-	if mustHaveHashtag {
+	if options.MustHaveHashtag {
 		query = query.Where(sq.NotEq{"p.Hashtags": ""})
 	}
 
+	if options.ExcludeDeleted {
+		query = query.Where(sq.Eq{"p.DeleteAt": 0})
+	}
+
 	queryString, args, err := query.ToSql()
 	if err != nil {
 		return 0, errors.Wrap(err, "post_tosql")