bot.rb

require 'json'
require 'open-uri'
require 'net/http'
require 'slack-ruby-client'

API_BASE = ENV['API_BASE']
SLACK_TOKEN = ENV['SLACK_TOKEN']
Slack.configure { |config| config.token = SLACK_TOKEN }
client = Slack::RealTime::Client.new

def aircon(work: false, mode: :auto, temp: 0)
  url = URI.parse(File.join(API_BASE, 'aircon'))
  req = Net::HTTP::Put.new(url.path)
  data = { mode: mode, temp: temp }
  data[:work] = '1' if work
  req.set_form_data(data)
  res = Net::HTTP.new(url.host, url.port).start { |http| http.request(req) }
  return res.code.to_i
end

client.on :hello do
  puts "Successfully connected, welcome '#{client.self.name}' to the '#{client.team.name}' team at https://#{client.team.domain}.slack.com."
end

client.on :message do |data|
  puts data
  next unless data.type == 'message'
  next if data.subtype == 'bot_message' # skip messages from bots
  next if data.user == client.self.id # skip self messages
  next unless data.reply_to.nil? || data.text =~ /<@#{client.self.id}>/ # skip replies

  if data.channel.start_with?('D')
    # DM
    case data.text
    when /気温|温度|何度/
      temp = open(File.join(API_BASE, '/env')) { |f| JSON.parse(f.read)['temp'].to_f }
      msg = [
        '寒い……寒いです……。', # -7
        'ちょっと寒いです。', # 7-16
        'ちょうどいい感じです。', # 17-26
        '暑いですよ……。', # 27-
      ]
      index = [[((temp + 3) / 10).to_i, 0].max, msg.count - 1].min
      client.message(channel: data.channel, text: "#{'%.1f' % temp}度だそうです。#{msg[index]}")
    when /エアコン|[冷暖]房|除湿|ドライ/
      mdic = { auto: '自動', cool: '冷房', heat: '暖房', dry: 'ドライ' }
      mode = case data.text
             when /冷房/ then :cool
             when /暖房/ then :heat
             when /除湿|ドライ/ then :dry
             else :auto
             end
      temp = data.text.match(/-?\d+(?=度)/) || { auto: 0, cool: 28, heat: 21, dry: 0 }[mode]
      res = case data.text
            when /つけ|オン|入れ|on/i
              comments = %w(しょうがないですね。)# 仕方ないですね……。 あまりこき使わないでください。)
              client.message(channel: data.channel, text: "#{comments.sample}#{temp}度の#{mdic[mode]}でエアコンつけておきますよ。")
              aircon(work: true, mode: mode, temp: temp)
            when /消し|切っ|オフ|止め|off/i
              client.message(channel: data.channel, text:  'わかりました。切っておきますね。')
              aircon(work: false, mode: mode, temp: temp)
            else nil
            end
      next if res.nil?
      client.message(channel: data.channel, text: 'あれ？リモコンが動かないみたいです。') unless res == 200
    end
  end
end

client.on :close do
  puts "Client is about to disconnect"
end

client.on :closed do
  puts "Client has disconnected successfully!"
end

client.start!