opalでbotkitを使った最小限slack bot

下準備

• botkit

> npm init
> npm install botkit --save

• opal

> gem install opal

ソース

• app.rb

require 'opal'
require 'native'

`const Botkit = require('botkit');`

token="[APIトークン]"

controller = Native(`Botkit.slackbot()`)

controller.spawn({ "token" => token }).startRTM do |err|
    if err
        exit
    end
end

controller.hears('hi', ['direct_message', 'direct_mention', 'mention'], Proc.new do |bot, msg|
    Native(`bot`).reply(msg, 'hi')
end)

~

実行

> opal -c app.rb > app.js
> node app.js