line-bot.rb

require 'sinatra'
require 'json'

get '/send' do
  text = params[:text]
  send(text) unless text.nil?
  'OK'
end

post '/callback' do
  logger.info(request.body.read)
end

def send(text)
  uri = URI('https://trialbot-api.line.me/v1/events')
  Net::HTTP.start(uri.host, uri.port, use_ssl: true) do |http|
    headers = {
      'Content-Type' => 'application/json',
      'X-Line-ChannelID' => ENV['LINE_CHANNEL_ID'],
      'X-Line-ChannelSecret' => ENV['LINE_CHANNEL_SECRET'],
      'X-Line-Trusted-User-With-ACL' => ENV['LINE_MID']
    }
    req = Net::HTTP::Post.new(uri.path, headers)
    req.body = {
      to: [ENV['TARGET_MID']],
      toChannel: 1_383_378_250,
      eventType: '138311608800106203',
      content: {
        contentType: 1,
        toType: 1,
        text: text
      }
    }.to_json
    http.request(req) do |res|
      logger.info(res.body)
    end
  end
end