gistfile1.rb

# -*- coding: utf-8 -*- 
require 'rubygems' 
require 'sinatra' 
require 'json' 
 
get '/' do  
  text = JSON.parse(params[:json])['events'][0]['message']['text'] 
  NiseHarizon.say if NiseHarizon.yharian?(text) 
end 
 
class NiseHarizon 
 
  @@_mode = :normal 
 
  def self.yharian?(text) 
    pm, *messages = text.split.reverse 
    false unless pm.end_with?('.') || pm.end_with?('!') || pm.end_with?('?') 
    messages << pm.chop 
    if messages.all? {|s| /\A(?:_|____)\z/ =~ s } 
      @@_mode = :silent 
      return true 
    end 
    @@_mode = :normal 
    messages.all? {|s| /\A(?:y|hara)\z/ =~ s } 
  end 
 
  def self.say 
    words = %w[ y hara ] 
    ret = rand(10).times.map { words[rand(2)] } 
    if @@_mode == :silent 
      ret = ret.map {|w| '_' * w.length } 
    end 
    ret.join(' ') + %w[ . ! ? ][rand(3)] 
  end 
end