yixin_controller.rb

#encoding: utf-8

require "net/http"
require "json"
require "xmlsimple"
class YixinController < ApplicationController

  layout nil
  skip_before_filter :verify_authenticity_token

  def index
    get_index if request.get?
    post_index if request.post?
  end

  def get_index
    @ts=params['timestamp']
    @n=params['nonce']
    @s=params['signature']
    if is_yixin(@ts,@n,@s)
      render :text=>params['echostr']
    end
  end

  def post_index 
    @ts=params['timestamp']
    @n=params['nonce']
    @s=params['signature']
    halt unless is_yixin(@ts,@n,@s)
    infos=XmlSimple.xml_in(request.body)
    @to_user,@from_user = infos['FromUserName'].first,infos['ToUserName'].first
    case infos['MsgType'].first
    when 'text'
      content=infos['Content'].first
      text_handler(content)
    when 'event'
      event_handler(infos)
    when "image"
      text_reply("This is a image")
    else
      text_reply("What do you say?")
    end
  end

  private 

  def is_yixin(ts,n,s)
    return false if ts.nil?
    hsh={'token'=>'20090327','timestamp'=>ts,'nonce'=>n}
    raw_string = hsh.values.sort.join()
    raw_string.gsub!(/[^0-9]/, "")
    signature = Digest::SHA1.hexdigest(raw_string)
    s==signature ? true : false
  end


  def event_handler(src)
    @event=src['Event'].first
    @key=src['EventKey'].first
    @pic_base="http://dl.sdedu.net/new_see/" 
    if @event=="subscribe"
      subscribe_handler
    elsif @event=="unsubscribe"
      unsubscribe_handler
    else
      click_handler(@key)
    end
  end


  def subscribe_handler
    text_reply("hello my friend,welcome to dljy")
  end

  def unsubscribe_handler
    text_reply("goodbye my friend,see you again")
  end

  def click_handler(key)
    case key
    when "festival_qa"
      headers["Content-Type"]="text/xml"
      render "yixin/festival_qa", :layout=>nil
    when /news/
      cat=key.split("/")[1]
      @articles=Article.checked.cat(cat,5)
      headers["Content-Type"]="text/xml"
      render "yixin/news",layout: nil
    else
      text_reply("I am not ready for you click")
    end
  end

  def text_handler(key)
    if key=="a"
      text_reply("This is a")
    elsif key=="help"
      text_reply("这是帮助文本，不过我也帮不了你，我不还知道怎么帮助你。随便点点看看吧。")
    else
      text_reply("你说的是什么？我看不懂，回复help获得帮助。")
    end
  end

  def text_reply(content)
    timei=Time.now.to_i
    #to_user,from_user = src['FromUserName'].first,src['ToUserName'].first
    text_tpl="<xml> <ToUserName>#{@to_user}</ToUserName> <FromUserName>#{@from_user}</FromUserName> <CreateTime>#{timei}</CreateTime> <MsgType>text</MsgType> <Content>#{content}</Content> </xml> "
    render :text=>text_tpl, :content_type=>"text/xml"
  end

  def news_reply
  end

  def music_reply
  end

end