【ラズパイDIY講座】ラズパイゼロで作る監視カメラ⑥〜Slackアプリから監視カメラ画像を取得してみる

            $ curl -sL install-node.now.sh/lts -o node.sh
$ chmod +x node.sh
$ sudo BASE_URL=https://unofficial-builds.nodejs.org/download/release ./node.sh
[sudo] password for *****: 
  Configuration
> Version:  v16.13.2 (resolved from lts)
> Prefix:   /usr/local
> Platform: linux
> Arch:     armv6l

> Tarball URL: https://unofficial-builds.nodejs.org/download/release/v16.13.2/node-v16.13.2-linux-armv6l.tar.gz
? Install Node.js v16.13.2 to /usr/local? [yN] y    
> Installing Node.js, please wait…
✓ Done

#👇後片付け
$ rm -rf node.sh

$ node --version
v16.13.2
        

            $ tree
.
├── package.json
└── index.js
        

            {
  "name": "slack-home-monitor",
  "version": "0.0.1",
  "description": "Home monitor app with Bolt-js",
  "main": "index.js",
  "author": "tacoskingdom",
  "license": "UNLICENSED",
  "dependencies": {
    "@slack/bolt": "^3.9.0"
  }
}
        

            $ npm install
        

            const { App } = require('@slack/bolt');
const child_process = require('child_process');
const fs = require("fs");

const app = new App({
    token: process.env.SLACK_BOT_TOKEN,
    appToken: process.env.SLACK_APP_TOKEN,
    socketMode: true,
});

const fileName = "./snap_tmp.jpg";

app.message('watch', async ({ message, client, logger }) => {
    try {
        //👇撮影日時を取得
        const timestamp = child_process.execSync(`TZ=JST-9 date "+%Y年%m月%d日%H:%M"`);
        //👇カメラから画像をキャプチャ
        child_process.execSync(`raspistill -w 480 -h 360 -vf -hf -q 10 -o snap_tmp.jpg`);
        //👇画像をチャンネルへ送信
        await client.files.upload({
            channels: message.channel,
            initial_comment: `${timestamp.toString()}`,
            file: fs.createReadStream(fileName)
        });
        //画像の後片付け
        child_process.execSync(`rm -rf snap_tmp.jpg`);
  } catch (error) {
    logger.error(error);
  }
});

(async () => {
    await app.start(process.env.PORT || 3000);
    console.log('⚡️ Bolt app is running!');
})();
        

            $ export SLACK_BOT_TOKEN=<ボットトークン>
$ export SLACK_APP_TOKEN=<アプリトークン>
        

            $ node index.js
⚡️ Bolt app is running!