import { stripText } from '../../../utils/counting/countingText';
import type { CountingView } from '../../../utils/counting/countingSelector';

/**
 * The appointments toolbar's count, INCLUDING at zero.
 *
 * Spencer, 2026-08-25: "Zero is information as opposed to not displaying and wondering if something is
 * broken." The receptionist overview was changed for exactly this - its board and rail state their zeroes
 * rather than deleting themselves. This page had not been.
 *
 * A clinician filtering to their own name and seeing no rows AND no count cannot tell "you have nothing
 * today" from "this did not load", and the line that would settle it is the one that was removed.
 *
 * WHY THIS DOES NOT CHANGE `stripText`, WHICH IS THE OBVIOUS PLACE
 *
 * That helper answers a different question - "is there anything I have not seen?" - and returning nothing
 * at zero is deliberate there: a permanent "0 unread" becomes wallpaper, which is the rule it was written
 * under. This line answers "how many rows are on this screen", and zero is a real answer to that.
 * -> Two different questions, two different treatments of zero. Changing the shared helper would trade
 * one ruling for the other on every surface that uses it.
 *
 * THE CANCELLED SUFFIX IS UNCHANGED and cannot appear at zero: it counts rows inside the same view, so a
 * total of none has none of them either. It is passed in rather than derived so this stays pure.
 */
export function appointmentCountText(view: CountingView, cancelledCount: number): string {
    if (view.total === 0) return '0 appointments';

    return stripText(view, 'appointment')
        + (cancelledCount > 0 ? ` · ${cancelledCount} cancelled` : '');
}