Add leaderboard for all tracks and track calendar

server/internal/races/leaderboard.go

@@ -451,3 +451,47 @@ func (s *PgStore) GetDriverLeaderboardProfile(ctx context.Context, driverID stri
 	}
 	return &entry, nil
 }
+
+// TrackCalendarInfo holds the basic details of a scheduled track.
+type TrackCalendarInfo struct {
+	ID        int
+	TrackID   string
+	TrackName string
+	StartAt   time.Time
+	EndAt     time.Time
+}
+
+// TrackCalendarLeaderboard holds the leaderboard summary for a track calendar event.
+type TrackCalendarLeaderboard struct {
+	TrackID       string
+	TrackName     string
+	StartAt       time.Time
+	EndAt         time.Time
+	Status        string // finished, active, planned
+	Podium        []LeaderboardEntry
+	CurrentDriver *LeaderboardEntry
+}
+
+// GetCalendarLeaderboardTracks returns all track calendar entries joined with their track names, sorted chronologically.
+func (s *PgStore) GetCalendarLeaderboardTracks(ctx context.Context) ([]TrackCalendarInfo, error) {
+	rows, err := s.pool.Query(ctx, `
+		SELECT tc.id, tc.track_id, t.name, tc.start_at, tc.end_at
+		FROM track_calendar tc
+		JOIN tracks t ON tc.track_id = t.id
+		ORDER BY tc.start_at DESC
+	`)
+	if err != nil {
+		return nil, fmt.Errorf("query calendar tracks: %w", err)
+	}
+	defer rows.Close()
+
+	var out []TrackCalendarInfo
+	for rows.Next() {
+		var info TrackCalendarInfo
+		if err := rows.Scan(&info.ID, &info.TrackID, &info.TrackName, &info.StartAt, &info.EndAt); err != nil {
+			return nil, fmt.Errorf("scan calendar track: %w", err)
+		}
+		out = append(out, info)
+	}
+	return out, nil
+}