abstract class ReportsRepository {
  Future<Duration> getTotalDuration(
    DateTime from,
    DateTime to, {
    int? projectId,
  });

  Future<Map<int, Duration>> getDurationByProject(DateTime from, DateTime to);

  /// Returns duration per weekday index (1=Mon … 7=Sun, SQLite strftime %w: 0=Sun)
  Future<Map<int, Duration>> getDurationByWeekday(DateTime weekStart);

  /// Returns duration per day-of-month
  Future<Map<int, Duration>> getDurationByDay(DateTime monthStart);
}