hoge

bot.rb

require 'slack-ruby-bot'
require 'natto'
require "active_record"

ActiveRecord::Base.establish_connection(
  adapter:   'sqlite3',
  database:  'onsyadb'
)
class Intro < ActiveRecord::Base # for ActiveRecord
end
class Onsya < SlackRubyBot::Bot
  match /御社/ do |client, data, match|
    words = []
    Intro.all.each {|intro| words.concat(Natto::MeCab.new('-O wakati').parse(intro.content).split(' ')) }
    words.unshift "BEGIN"
    words.push "END"
    nodes = words.each_cons(3).to_a
    node = nodes.select{|n|n[1] == "私"}.sample
    markov_text = node[1]+node[2]
    loop do
       node = nodes.select{|w| node[1] == w[0] && node[2] == w[1] }.sample
       break if(markov_text.count("。")==3 || node.nil?)
       markov_text << node.last
    end
    message = "生成しました！「#{markov_text}」"
    client.say(channel: data.channel, text: markov_text)
  end
end

Onsya.run

Gemfile

# A sample Gemfile
source "https://rubygems.org"

# gem "rails"
gem 'slack-ruby-bot'
gem 'natto'
gem 'activerecord'
gem 'sqlite3'

onsyadb