MM-43956: Adds post counts by duration. (#20131)

* MM-43956: Adds post counts by day.

* MM-43956: Test data cleanup. Switch from Unix to UnixMilli.

* MM-43956: Changes from selecting date data types to strings in SQL.

* MM-43956: Fixes date format key.

* MM-43956: Adds missing user id scope for 'my' top channels graph.

* MM-43956: Adds the ability to group post counts by hour.

* MM-43956: Require enterprise or professional license. Reject guests.

* MM-43956: Adds license for tests.

* MM-43956: Renames function.

* MM-43956: Omits future hours from post counts by hour.

* MM-43956: Adjust API response grouping to users timezone.

* MM-43956: Adds translation.

* MM-43956: Adds user's timezone to the data tier for the grouping by day and hour.

* MM-43956: Fixes layers.

* MM-43956: Lint fix.

* MM-43956: Fix store layers.

* MM-43956: Switches to default name for time package; changes parameter names to avoid naming conflict.

* MM-43956: Updates mocks.

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

store/sqlstore/channel_store.go

@@ -4297,3 +4297,53 @@ func (s SqlChannelStore) GetTopChannelsForUserSince(userID string, teamID string
 
 	return model.GetTopChannelListWithPagination(channels, limit), nil
 }
+
+func (s SqlChannelStore) PostCountsByDuration(channelIDs []string, sinceUnixMillis int64, userID *string, duration model.PostCountGrouping, atLocation *time.Location) ([]*model.DurationPostCount, error) {
+	var unixSelect string
+	var propsQuery string
+	loc := atLocation.String()
+	if loc == "Local" {
+		loc = "UTC"
+	}
+	if s.DriverName() == model.DatabaseDriverMysql {
+		if duration == model.PostsByDay {
+			unixSelect = `DATE_FORMAT(CONVERT_TZ(FROM_UNIXTIME(Posts.CreateAt / 1000), 'GMT', '` + loc + `'),'%Y-%m-%d') AS duration`
+		} else {
+			unixSelect = `DATE_FORMAT(CONVERT_TZ(FROM_UNIXTIME(Posts.CreateAt / 1000), 'GMT', '` + loc + `'),'%Y-%m-%dT%H') AS duration`
+		}
+		propsQuery = `(JSON_EXTRACT(Posts.Props, '$.from_bot') IS NULL OR JSON_EXTRACT(Posts.Props, '$.from_bot') = 'false')`
+	} else if s.DriverName() == model.DatabaseDriverPostgres {
+		if duration == model.PostsByDay {
+			unixSelect = fmt.Sprintf(`TO_CHAR(TO_TIMESTAMP(Posts.CreateAt / 1000) AT TIME ZONE '%s', 'YYYY-MM-DD') AS duration`, loc)
+		} else {
+			unixSelect = fmt.Sprintf(`TO_CHAR(TO_TIMESTAMP(Posts.CreateAt / 1000) AT TIME ZONE '%s', 'YYYY-MM-DD"T"HH24') AS duration`, loc)
+		}
+		propsQuery = `(Posts.Props ->> 'from_bot' IS NULL OR Posts.Props ->> 'from_bot' = 'false')`
+	}
+	query := sq.
+		Select("Posts.ChannelId AS channelid", unixSelect, "count(Posts.Id) AS postcount").
+		From("Posts").
+		LeftJoin("Channels ON Posts.ChannelId = Channels.Id").
+		Where(sq.And{
+			sq.Eq{"Posts.DeleteAt": 0},
+			sq.Gt{"Posts.CreateAt": sinceUnixMillis},
+			sq.Eq{"Posts.Type": ""},
+			sq.Eq{"Channels.Id": channelIDs},
+		}).
+		Where(propsQuery).
+		GroupBy("channelid", "duration").
+		OrderBy("channelid", "duration")
+	if userID != nil && model.IsValidId(*userID) {
+		query = query.Where(sq.And{sq.Eq{"Posts.UserId": *userID}})
+	}
+	queryString, args, err := query.ToSql()
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to parse query")
+	}
+	dailyPostCounts := make([]*model.DurationPostCount, 0)
+	if err := s.GetReplicaX().Select(&dailyPostCounts, queryString, args...); err != nil {
+		return nil, errors.Wrap(err, "failed to get post counts by duration")
+	}
+
+	return dailyPostCounts, nil
+}