const tcol = Deno.consoleSize().columns;

export const spacer = (n: number, char: string) =>
  Array(Math.floor(n)).fill(char).join("");

export function breakline(open: string, title: string, close: string) {
  const line = liner(spacer((tcol - title.length - 2) / 2, "─"));
  return [line([open]), title, line([, close])];
}

export const liner = (sep: string) =>
(
  [open = "", close = ""]: [open?: string, close?: string],
  s = open || close,
) => open + sep.slice(0, -s.length) + close;

export const header = (title: string) => breakline("┌─", title, "─┐");

export const footer = (title: string) => breakline("└─", title, "─┘");