/** Platform-aware keybinding helpers.
 *
 * On macOS the "action" modifier is Cmd (key.meta in Ink), on other platforms
 * it is Ctrl. Ctrl+C is ALWAYS the interrupt key regardless of platform — it
 * must never be remapped to copy.
 */

export const isMac = process.platform === 'darwin'

/** True when the platform action-modifier is pressed (Cmd on macOS, Ctrl elsewhere). */
export const isActionMod = (key: { ctrl: boolean; meta: boolean }): boolean => (isMac ? key.meta : key.ctrl)

/** Match action-modifier + a single character (case-insensitive). */
export const isAction = (key: { ctrl: boolean; meta: boolean }, ch: string, target: string): boolean =>
  isActionMod(key) && ch.toLowerCase() === target