Lastfm scrobbling backend ready

app/controllers/last_fm_controller.rb

@@ -1,4 +1,5 @@
 require 'open-uri'
+require 'lastfm'
 
 class LastFmController < ApplicationController
   
@@ -9,7 +10,10 @@ class LastFmController < ApplicationController
     unless params[:sid].nil? or params[:token].nil?
       session = Session.find_by_key(params[:sid])
       unless session.nil?
-        session.user.lastfm_token = params[:token]
+        lastfm = Lastfm.new(@@api_key, @@secret)
+        lastfm.session = lastfm.auth.get_session(params[:token])
+        session.user.lastfm_key = lastfm.session['key']
+        session.user.lastfm_username = lastfm.session['name']
         session.user.save
         render :text => '<script>window.close();</script>'
       else
@@ -21,52 +25,45 @@ class LastFmController < ApplicationController
   end
   
   def getinfo
-    #return unless authorized?
+    return unless authorized?
     @res = {}
     
-    user = User.find_by_vkid(1217744)#params[:mid])
-    @res[:connected] = false
-    @res[:lastfm_login_url] = 'http://www.last.fm/api/auth?api_key='+ @@api_key +'&cb=http://localhost/lastfm/connect/?sid='+ user.session.key
-    
-    unless user.lastfm_token.nil?
-      lastfm_response = auth_query({:method => 'auth.getSession', :token => user.lastfm_token})
-      render :json => lastfm_response
-      return
-      if lastfm_response
-        user.lastfm_token = lastfm_response[1]
-        user.save
-        @res[:connected] = true
-        @res[:username] = lastfm_response[0];
-      end
-    end
-    
-    render :json => @res
-  end
-  
-  private
-  
-  def auth_query params
-    url = 'http://ws.audioscrobbler.com/2.0/?'
-    params[:api_key] = @@api_key
-    params.each do |k, v|
-      url << k.to_s << '=' << v << '&'
-    end
-    url << 'api_sig=' << get_signature(params)
-    begin
-      open(url).read.match(/<name>(.*?)<\/name>.*?<key>(.*?)<\/key>/m)
-    rescue
-      false
+    user = User.find_by_vkid(params[:mid])
+    unless user.lastfm_key.nil?
+      render :json => {
+        :connected => true,
+        :username => user.lastfm_username
+      }
+    else
+      render :json => {
+        :connected => false,
+        :lastfm_login_url => 'http://www.last.fm/api/auth?api_key='+ @@api_key +'&cb=http://localhost/lastfm/connect/?sid='+ user.session.key
+      }
     end
   end
   
-  def get_signature params
-    params = params.to_a.sort! { |a, b| a[0] <=> b[0] }
-    params = Hash[params]
-    str = '';
-    params.each do |k, v|
-      str << k.to_s << v
-    end
-    Digest::MD5.hexdigest(str + @@secret)
+  def listening
+    return unless authorized?
+    return if params[:artist].nil? or params[:track].nil?
+    
+    user = User.find_by_vkid(params[:mid])
+    return unless user.lastfm_key.nil?
+    
+    lastfm = Lastfm.new(@@api_key, @@secret)
+    lastfm.session = user.lastfm_key
+    lastfm.update_now_playing(params[:artist], params[:track])
+  end
+  
+  def scrobble
+    return unless authorized?
+    return if params[:artist].nil? or params[:track].nil?
+    
+    user = User.find_by_vkid(params[:mid])
+    return unless user.lastfm_key.nil?
+    
+    lastfm = Lastfm.new(@@api_key, @@secret)
+    lastfm.session = user.lastfm_key
+    lastfm.scrobble(params[:artist], params[:track])
   end
   
 end