import type { SortState } from "./types";

export function sortRows<T>(rows: readonly T[], sort: SortState | undefined, value: (row: T, key: string) => string): T[] {
  if (!sort) return [...rows];
  const copy = [...rows];
  copy.sort((a, b) => value(a, sort.key).localeCompare(value(b, sort.key)) * sort.dir);
  return copy;
}

export function nextSort(current: SortState | undefined, key: string): SortState {
  if (current?.key === key) return { key, dir: current.dir === 1 ? -1 : 1 };
  return { key, dir: 1 };
}