export const KEYBOARD_HELP_PADDING_X = 1;

type ThemeLike = {
  fg: (color: string, text: string) => string;
};

export function formatKeyboardHelp(theme: ThemeLike, helpText: string): string {
  const trimmed = helpText.trim();
  if (trimmed.length === 0) return "";

  const entries = trimmed
    .split(" • ")
    .map((entry) => entry.trim())
    .filter(Boolean);

  return entries
    .map((entry) => {
      const splitIdx = entry.indexOf(" ");
      if (splitIdx === -1) {
        return theme.fg("muted", entry);
      }

      const key = entry.slice(0, splitIdx);
      const action = entry.slice(splitIdx + 1);
      return `${theme.fg("muted", key)} ${theme.fg("dim", action)}`;
    })
    .join(theme.fg("dim", " • "));
}