export const IMAGE_GENERATOR_DRAFT_VERSION = 1;

export function serializeImageGeneratorDraft<Value>(value: Value): string {
  return JSON.stringify({ version: IMAGE_GENERATOR_DRAFT_VERSION, value });
}

export function parseImageGeneratorDraft<Value>(
  serialized: string,
  parse: (value: unknown) => Value | null,
): Value | null {
  try {
    const envelope = JSON.parse(serialized) as {
      version?: unknown;
      value?: unknown;
    };
    if (envelope.version !== IMAGE_GENERATOR_DRAFT_VERSION) return null;
    return parse(envelope.value);
  } catch {
    return null;
  }
}