wx-gzh/lib/code.ts

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/*
 * @Description: 生成二维码图片
 * @Author: chtao
 * @Email: 1763615252@qq.com
 * @Date: 2020-07-26 19:22:26
 * @LastEditTime: 2020-08-02 19:44:05
 * @LastEditors: chtao
 * @FilePath: \wx-gzh\lib\code.ts
 */

import WeChat from '..';
import { post } from '../utils';

/**
 * 生成带参数的临时二维码图片
 * @param accessToken token
 * @param time 过期时间  默认为最大值 2592000(s) 30 天
 */
export async function getQRCode(this: WeChat, time: number = 2592000) {
  const scene_id = Math.random().toString(36).substr(2, 10);

  const data = {
    expire_seconds: time,
    action_name: 'QR_STR_SCENE',
    action_info: { scene: { scene_str: scene_id } },
  };

  const result: any = await post(
    `https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=${this.accessToken}`,
    data
  );

  return {
    url:
      'https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=' +
      result.ticket +
      '&t=' +
      new Date().getTime(),
    scene_id,
  };
}