added team rosters to season_league overview

internal/db/teamroster.go

@@ -75,6 +75,26 @@ func GetTeamRoster(ctx context.Context, tx bun.Tx, seasonShortName, leagueShortN
 	return twr, nil
 }
 
+// GetManagersByTeam returns a map of teamID -> manager Player for all teams in a season/league
+func GetManagersByTeam(ctx context.Context, tx bun.Tx, seasonID, leagueID int) (map[int]*Player, error) {
+	rosters := []*TeamRoster{}
+	err := tx.NewSelect().
+		Model(&rosters).
+		Where("tr.season_id = ?", seasonID).
+		Where("tr.league_id = ?", leagueID).
+		Where("tr.is_manager = true").
+		Relation("Player").
+		Scan(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "tx.NewSelect")
+	}
+	result := make(map[int]*Player, len(rosters))
+	for _, r := range rosters {
+		result[r.TeamID] = r.Player
+	}
+	return result, nil
+}
+
 func AddPlayerToTeam(ctx context.Context, tx bun.Tx, seasonID, leagueID, teamID, playerID int, manager bool, audit *AuditMeta) error {
 	season, err := GetByID[Season](tx, seasonID).Get(ctx)
 	if err != nil {