interface ScanData {
  code: string;
  state: number;
  type: number;
  message?: string;
}

export interface BridgeEventMap {
  scan: CustomEvent<{code: number, data?: ScanData, message?: string}>;
}

export class Bridge extends EventTarget {
  public static getInstance(): Bridge;

  public static print(): Promise<void>;
  public static print(params: { url?: string }): Promise<void>;

  public static scan(params?: { timeout?: number; signal?: AbortSignal }): Promise<ScanData>;

  /**
   * 监听扫码事件
   * @param type 事件类型 'scan'
   * @param listener 事件回调，参数为 ScanEvent
   * @param options
   */
  addEventListener<T extends keyof BridgeEventMap>(type: T, listener: (event: BridgeEventMap[T]) => void, options?: boolean | AddEventListenerOptions): () => void;
  removeEventListener<T extends keyof BridgeEventMap>(type: T, listener: (event: BridgeEventMap[T]) => void, options?: boolean | AddEventListenerOptions): () => void;
}