以加签方式发送钉钉 bot 消息，独立文件不需要 npm i

dingbot.js

'use strict';

/*

// usage:

const dingbot = require('./dingbot');

const token = '50cb6e954c89afa14fb97754eafd886d658fcda27d05015a26b474e7bd2f0a59';
const secret = 'SEC5a3ecf88f2b3eb50db30ecfc00f53033ac909c99bf7f88fd612bda89d7f3a9dc';
const content = 'foo bar ' + Date.now()

dingbot(content, token, secret);

 */

const crypto = require('crypto');
const https = require('https');

const dingbot = (content, token, secret) => {

	const body = {
		msgtype: 'text',
		text: {
			content,
		}
	};

	const ts = Date.now();
	const signature= `${ts}\n${secret}`;
	const crypt = crypto.createHmac('sha256', secret).update(signature);
	const hash = encodeURIComponent(crypt.digest('base64'));
	const query = `?access_token=${token}&timestamp=${ts}&sign=${hash}`;

	const s = JSON.stringify(body);

	const option = {
		hostname: 'oapi.dingtalk.com',
		path: `/robot/send${query}`,
		method: 'POST',
		headers: {
			'Content-Type': 'application/json',
			'Content-Length': Buffer.byteLength(s),
		},
	};

	const req = https.request(option);
	req.write(s);
	req.end();
}
module.exports = dingbot;