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import Taro from "@tarojs/taro";
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/** 创建跳转页面选择辅助函数 */
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export const createChooseHelperEvents = <T, F extends Record<string | number, any>>({url, name}: {
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  /** url 参数 */
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  url: string;
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  /** 监听器名称 */
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  name: string;
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}): {
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  /** 选择页面函数 */
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  choose: (data: T) => void;
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  /** 跳转到选择页面函数 */
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  toChoose: (params: F) => Promise<T>;
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} => {
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  return {
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    choose: (data) => {
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      const pages = Taro.getCurrentPages();
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      const currentPage = pages[pages.length - 1];
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      const eventChannel = currentPage.getOpenerEventChannel();
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      eventChannel.emit(name, data);
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    },
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    toChoose: (params: Record<string | number, any>) => {
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      return new Promise<T>((resolve, reject) => {
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        Taro.navigateTo({
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          url: `${url}?${jsonToUrlParams(params)}`,
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          events: {
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            [name]: (data: T) => {
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              data ? resolve(data) : reject();
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            }
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          }
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        });
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      });
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    }
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  };
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};
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// jsonToUrlParams 实现省略

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export const dishedOrderChooseHelper = createChooseHelperEvents<
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  PreOrder.PreOrderAddProductDTO[],
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  {}
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>({
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  url: '/pages/placeAnOrder/subPages/dishesOrder/index',
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  name: 'chooseDishesOrder'
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});
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// 获取数据的调用方（父界面）
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const data = await dishedOrderChooseHelper.toChoose({});
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// dishesOrder子界面中
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dishedOrderChooseHelper.choose(selectData);