package membership

import (
	"context"
	"io"
)

// FeesReport loads adult attendance via l, computes fees, and writes the
// fee table to out. Returns ErrIOPending until a real loader is injected in M4.
func FeesReport(ctx context.Context, l AttendanceLoader, out io.Writer) error {
	members, sortedMonths, err := l.LoadAdults(ctx)
	if err != nil {
		return err
	}
	printFeesTable(out, members, sortedMonths)
	return nil
}