package data

import (
	"context"
	"database/sql"
)

// GetStationName returns stations.name by station_id; empty string if not found/null.
func GetStationName(ctx context.Context, stationID string) (string, error) {
	const q = `SELECT COALESCE(name, '') FROM stations WHERE station_id = $1`
	var name sql.NullString
	err := DB().QueryRowContext(ctx, q, stationID).Scan(&name)
	if err != nil {
		if err == sql.ErrNoRows {
			return "", nil
		}
		return "", err
	}
	if name.Valid {
		return name.String, nil
	}
	return "", nil
}