slack-bot-tutorial-code

01-00-code.js

// 아래 코드는 공식 문서에서 발췌 한 후 아주 작은 수정을 했다.

const { RTMClient } = require('@slack/rtm-api');
const token = process.env.SLACK_BOT_TOKEN;
const rtm = new RTMClient(token);

// Listen for users who join a channel that the bot user is a member of
// See: https://api.slack.com/events/member_joined_channel
rtm.on('member_joined_channel', async event => {
  try {
    // Send a welcome message to the same channel where the new member just joined,
    // and mention the user.
    const reply = await rtm.sendMessage(
      `Welcome to the channel, <@${event.user}>`,
      event.channel
    );
    console.log('Message sent successfully', reply.ts);
  } catch (error) {
    console.log('An error occurred', error);
  }
});

(async () => {
  await rtm.start();
})();

01-01-code.ts

import * as debug from 'debug';

import {
  LogLevel,
  RTMClient,
  WebClient,
  WebAPICallResult
} from '@slack/client';

const log = debug('sb:server');

const SLACK_TOKEN: string = process.env.SLACK_TOKEN || 'token';

const rtm = new RTMClient(SLACK_TOKEN, { logLevel: LogLevel.ERROR });
const webClient = new WebClient(SLACK_TOKEN);

/*
 * rtm.on 으로 사용할 수 있는 event type은 다음 문서를 참고한다.
 * https://api.slack.com/events
 */

rtm.on('member_joined_channel', async event => {
  log(event);
  try {
    const welcomeMsg: WebAPICallResult & {
      ts?: string;
    } = await webClient.chat.postMessage({
      token: SLACK_TOKEN,
      channel: event.channel,
      text: `<@${event.user}> 님, 환영합니다.`
    });
    log(welcomeMsg);
  } catch (error) {
    log('An error occurred', error);
  }
});

(async () => {
  const start = await rtm.start();
  log('start: ', start);
})();