/**
 * 扫码初始化选项
 */
interface ScanConfigOptions {
  /**
   * 网页扫码canvas样式
   */
  webCanvasStyle?: string,
  /**
   * 微信JSSDK配置，配置后会自动初始化微信JSSDK
   */
  initWechatJssdk: {
    /**
     * 微信JSSDK配置API地址，调用接口会带上当前页面url作为参数
     */
    apiUrl: string,
    /**
     * 微信JSSDK配置SDK地址，默认为https://res.wx.qq.com/open/js/jweixin-1.6.0.js
     */
    sdkUrl?: string,
    /**
     * 微信JSSDK配置JS-API列表，默认追加["scanQRCode"]
     */
    jsApiList?: string[]
  }
}

/**
 * 扫码选项
 */
interface ScanResult {
  result: string,
  key: string
}

/** IScan */
interface IScan {
  /**
   * 配置SDK
   * @param options 配置选项
   */
  config(options?: ScanConfigOptions): Promise<any>;
  /**
   * 监听扫码状态
   * @param callback 监听回调
   */
  setStatusListener(callback: (status: "scanning" | "closed") => any): void;
  /**
   * 监听扫码结果
   * @param callback 监听回调
   * @param key 监听key
   * @param match 监听匹配
   * @param level 监听级别
   */
  onScanListener(callback: (result: ScanResult) => any, key: string, match: string, level: number): void;
  /**
   * 取消监听扫码结果
   * @param callback 监听回调
   */
  offScanListener(callback: (result: ScanResult) => any): void;
  /**
   * 获取扫码状态
   * @returns "scanning" | "closed"
   */
  getStatus(): "scanning" | "closed";
  /** 
   * 关闭扫码 
   */
  stopScan(): void;
  /** 
   * 开启扫码
   */
  startScan(): void;
  /**
   * 清除全部监听
   */
  clear(): void;

}

declare var IScan: IScan;

declare interface Window {
  IScan: IScan;
}