slack-emoji-generator-cli

emoji-generator-slack-app

This is an emoji generator app for slack.

Example

@botname [color] [bgColor] [line1] [line2(optional)]

Get Started

You need to be prepared to set environment variables.

SLACK_SIGNIN_SECRET=
SLACK_BOT_TOKEN=

Also, you need to have these settings.

Singing Secret

Bot Token

Required Permission - Bot Token Scopes

Event subscriptions - Request URL

If you want to try it out easily in a local environment, try using ngork.

go run main.go
ngrok http 9999

Please read a caution before using in production environment if you want this app in production environment.

API

/generator

• API for generatoring image.
• The following items are prepared as query parameters.
  • color
    • text color.
  • bgColor
    • Background color.
  • line1
    • First line text.
  • line2
    • Second line text.
    • Optional
• ex. http://localhost:9999/generator?color=red&bgColor=green&line1=foo&line2=bar

/slack/events

• API for slack events subscription.

Caution

There is a bug where images are posted multiple times.

References

• note.com - Goでheadless browserを用いた動的画像生成
• qiita.com - Go で Slack Bot を作る (2020年3月版)
• qiita.com - Go で Interactive な Slack Bot を作る (2020年5月版)
• dev.to - Slackで送った文字を画像で返すbot作った
• lab.syncer.jp - 複数行のテキストを描く方法
• Stackoverflow - Size to fit font on a canvas