export type ContextMenuInvocation = 'menu' | 'press';

export interface ContextMenuKey {
  key: string;
  shiftKey?: boolean;
  altKey?: boolean;
  ctrlKey?: boolean;
  metaKey?: boolean;
  repeat?: boolean;
}

/** The cross-platform subset ContextMenu consumes from a key-down event. */
export interface ContextMenuKeyDownEvent {
  nativeEvent: ContextMenuKey;
  preventDefault: () => void;
  isDefaultPrevented: () => boolean;
}

/** Resolve a screen-reader/switch action to the same paths touch users have. */
export function contextMenuAccessibilityInvocation(
  actionName: string,
  hasPrimaryAction: boolean,
  disabled: boolean
): ContextMenuInvocation | undefined {
  if (disabled) return undefined;
  if (actionName === 'showMenu') return 'menu';
  if (actionName === 'activate') return hasPrimaryAction ? 'press' : 'menu';
  return undefined;
}

/** Resolve web/hardware keys without stealing modified shortcuts or repeats. */
export function contextMenuKeyInvocation(
  event: ContextMenuKey,
  hasPrimaryAction: boolean,
  disabled: boolean
): ContextMenuInvocation | undefined {
  if (disabled || event.repeat) return undefined;
  if (event.key === 'ContextMenu' || (event.key === 'F10' && event.shiftKey)) return 'menu';
  if (event.altKey || event.ctrlKey || event.metaKey) return undefined;
  if (event.key === 'Enter' || event.key === ' ') {
    return hasPrimaryAction ? 'press' : 'menu';
  }
  return undefined;
}