一人暮らしの寂しさを紛らわす彼女(bot)を作った話 ref: http://qiita.com/lapis_zero09/items/cdde08576abbcbedad4d

file0.txt

$ ruby -v
ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-linux]

file1.txt

$ gem install twitter
$ gem install tweetstream
$ gem install docomoru

file2.txt

$ mkdir bot
$ cd bot
$ touch　twcon.rb

file4.txt

$ irb
irb(main):001:0> require './twcon.rb'
=> true
irb(main):002:0> eve = Eve.new
=> ~省略~
irb(main):003:0> eve.say("test", "")
=> #<Twitter::Tweet id=705644033196994561>
(↑こんな感じのが出たら成功)
irb(main):004:0>

file5.txt

$ touch　main.rb

file7.txt

$ touch　~/bot/r-recipe.rb

main.rb

require './r-recipe.rb'
~省略~
begin
  eve.timeline.userstream{|status|
    contents=status.text
    next if(contents=~/^RT/)

    id=status.user.screen_name
    id='@' + id + ' '

    # reply_answer
    if(contents=~/@lapis_ko/)&&(status.user.screen_name!='lapis_ko')
      postmatch=$'

      # 料理推薦
      if(contents=~/飯/)
        food=RecommendRecipe.new
        if(contents=~/:|：/)
          eve.say(id+food.call("#{$'}"), status.id)
        else
          eve.say(id+"ご飯にする？\n"+food.call("なんでもいい")+"食べたいものがあれば「ご飯:食べたいもの」で指定してね！", status.id)
        end

      # 会話
      else
        postmatch.gsub!(/\s|[　]|\?|\？/, "")
        # QandA
        if(postmatch=~/誰|何処|だれ|どこ|何時|いつ|どうやって|どうして|何故|なぜ|どの|何|なに|どれ|は$/)
          eve.say(id+eve.docomoru_create_knowledge(postmatch), status.id)
        # 会話
        else
          eve.say(id+eve.docomoru_create_dialogue(postmatch), status.id)
        end

      end

      next
    end

    # メンション以外の名前に反応
    if(contents=~/eve|Eve|イヴ|イブ|いぶ/)&&(status.user.screen_name!='lapis_ko')
      called_name=['なに?', '呼んだ?','どうしたの?']
      eve.say(id+called_name.sample, status.id)
      next
    end

    # 料理推薦
    if(contents=~/飯|お腹すいた/)&&(status.user.screen_name!='lapis_ko')
      food=RecommendRecipe.new
      eve.say(id+"ご飯にする？\n"+food.call("なんでもいい")+"食べたいものがあれば「ご飯:食べたいもの」で指定してね！", status.id)
      next
    end

    #zero09がつぶやいたらリプライ
~省略~

r-recipe.rb

# coding: utf-8
require 'open-uri'
require 'json'
require 'yaml'
#nattoかMeCabどっちでもいい
require 'natto'
# require 'MeCab'

class RecommendRecipe
    keys=YAML.load_file('./config.yml')
    RECIPE_CATEGORY_URL="https://app.rakuten.co.jp/services/api/Recipe/CategoryList/20121121?format=json&elements=categoryName%2CcategoryId%2CparentCategoryId&categoryType=medium&applicationId=#{keys['rakuten_api_id']}"
    RECIPES_URL="https://app.rakuten.co.jp/services/api/Recipe/CategoryRanking/20121121?format=json&formatVersion=2&applicationId=#{keys['rakuten_api_id']}&categoryId="

  def call(food)
    hearing(food)
  end

  private

  def hearing(food)
    results = recipe_categories
    if(food=='なんでもいい')
      recipe_category_id = results[results.keys.sample]
      recipe = choose_recipe(recipe_category_id)
      return "#{food}なら、#{recipe['recipeTitle']} とかはどう？ #{recipe['recipeUrl']}"+' <Supported by RWS>'
    else
      recipe_category_id = results.fetch(food, nil)
      if(recipe_category_id.nil?)

        words=[]

        #require 'MeCab'の場合
        # mc=MeCab::Tagger.new()
        # n=mc.parseToNode(food)
        # while(n)
        #   if(n.feature.split(',')[0]=="名詞")
        #     words.push(n.surface)
        #   elsif(words.size>0)
        #     food=words.join("")
        #     break
        #   end
        #   n=n.next
        # end

        #require 'natto'の場合
        nt=Natto::MeCab.new
        nt.parse(food){|n|
          if(n.feature.split(',')[0]=="名詞")
            words.push(n.surface)
          elsif(words.size>0)
            food=words.join("")
            break
          end
        }
        recipe_category_id = results.fetch(food, nil)
        if(recipe_category_id.nil?)
          return "#{food}だとわからないからもうちょっと詳しく教えて(漢字⇆ひらがなにするといいかも)"
        else
          recipe = choose_recipe(recipe_category_id)
          return "#{food}だと、#{recipe['recipeTitle']} とかはどう？ #{recipe['recipeUrl']}"+' <Supported by RWS>'
        end


      else
        recipe = choose_recipe(recipe_category_id)
        return "#{food}だと、#{recipe['recipeTitle']} とかはどう？ #{recipe['recipeUrl']}"+' <Supported by RWS>'
      end
    end
  end

  def recipe_categories
    response=open(RECIPE_CATEGORY_URL).read
    results=JSON.parse(response.force_encoding('UTF-8'))
    return results["result"]["medium"].map{|result| [result['categoryName'], "#{result['parentCategoryId']}-#{result['categoryId']}"]}.to_h
  end

  def choose_recipe(recipe_category_id)
    response=open("#{RECIPES_URL}#{recipe_category_id}").read
    results=JSON.parse(response.force_encoding('UTF-8'))
    return results['result'][Random.rand(1 .. results['result'].count-1)]
  end
end

twcon.rb

# coding:utf-8
require 'yaml'
require 'twitter'
require 'tweetstream'
require 'docomoru'

class Eve
  # 外部から参照できるメンバ変数
  attr_accessor :client, :timeline

  def initialize
    keys=YAML.load_file('./config.yml')

    # restAPI初期化
    @client=Twitter::REST::Client.new{|config|
      config.consumer_key=keys["api_key"]
      config.consumer_secret=keys["api_secret"]
      config.access_token=keys["access_token"]
      config.access_token_secret=keys["access_token_secret"]
    }

    # StreamAPI初期化
    TweetStream.configure{|config|
      config.consumer_key=keys["api_key"]
      config.consumer_secret=keys["api_secret"]
      config.oauth_token=keys["access_token"]
      config.oauth_token_secret=keys["access_token_secret"]
      config.auth_method=:oauth
    }
    @timeline=TweetStream::Client.new

    # docomoAPI初期化
    @docomoru=Docomoru::Client.new(api_key: keys["docomo_api_key"])
  end

  # 引数を投稿するメソッド
  def say(words, id)
    @client.update(words, :in_reply_to_status_id => id)
  end

  # 会話を生成する(docomoru)
  def docomoru_create_dialogue(str)
    response=@docomoru.create_dialogue(str)
    return response.body["utt"]
  end

  # QandA(docomoru)
  def docomoru_create_knowledge(str)
    response=@docomoru.create_knowledge(str)
    if(response.body["code"]=="E020010")
      return response.body["message"]["textForDisplay"]
    else
      if(response.body["answers"][0]["linkUrl"]==nil)
        return response.body["message"]["textForDisplay"]
      else
        return response.body["message"]["textForDisplay"]+"<"+response.body["answers"][0]["linkUrl"]+">"
      end
    end
  end
end