/**
 * Tiny shared clipboard for canvas node copy/paste.
 *
 * Both the context menu (right-click Copy/Paste) and the keyboard shortcuts
 * hook (Ctrl/Cmd+C / Ctrl/Cmd+V) read and write this single module-level
 * store, so copying a node via one entry point and pasting via the other
 * behaves consistently instead of each maintaining its own clipboard.
 *
 * Deliberately not React state -- nothing in the UI needs to re-render
 * reactively when the clipboard changes; consumers just read the current
 * value at the moment they need it (on paste, or when a menu opens).
 */
let clipboardNodeId: string | null = null;

/** Returns the id of the node currently on the clipboard, or null if empty. */
export function getClipboardNodeId(): string | null {
  return clipboardNodeId;
}

/** Sets (or clears, with `null`) the node id on the clipboard. */
export function setClipboardNodeId(nodeId: string | null): void {
  clipboardNodeId = nodeId;
}