gistfile1.rb

class LyricsController < ApplicationController
  def find
    already_have = Song.find_by_song_and_artist(params[:song], params[:artist])
    
    unless already_have.nil?
      logger.info "Already has #{params[:song]} by #{params[:artist]}"
      already_have.increment!(:total_plays)
      render :text => already_have.lyrics, :content_type => "text/text"
    else
      require 'open-uri'
      notice = "We have updated our lyric database.\nPlease email our support if you have any comments.\nThis notice will go away 10/17.\n\n"
      
      artist = wiki_slug(params[:artist])
      song = wiki_slug(params[:song])
      url = "http://lyrics.wikia.com/#{artist}:#{song}"
      logger.info "Request to: #{url}"
      doc = Nokogiri::HTML(open(url))
      
      grabbed = parse_lyrics(doc.css('div#bodyContent div.lyricbox').first.to_s)
      lyric = Song.find_by_artist_and_song(artist, song)
    
      unless lyric.nil?
        lyric.increment!(:total_plays)
        render :text => "#{notice}#{lyric.lyrics}", :content_type => "text/text"
      else
        unless grabbed.blank?
          lyric = Song.new({
            :artist => artist,
            :song => song,
            :lyrics => grabbed
          }).save
          
          render :text => "#{notice}#{grabbed}", :content_type => "text/text"
        else
          render :text => "Not found", :content_type => "text/text"
        end
      end
    end
  end
  
  private
  
  def wiki_slug(string)
    string.split(' ').select {|w| w.capitalize! || w }.join(' ').gsub(' ', '_')
  end
  
  def parse_lyrics(string)
    string.gsub(/<div class="lyricbox">/, '').gsub(/<\/div>/, '').gsub(/<p>/, '').gsub(/<\/p>/, '').gsub(/<br>/, "\n").gsub(/<\/?[^>]*>/, '').gsub(/Send "(.*)" Ringtone to your Cell/, '').lstrip.rstrip
  end
end