last.fm loved tracks

last.fm-loved-tracks.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'net/http'
require 'rexml/document'
require 'rss/maker'

# data source
# http://www.lastfm.se/api/show?service=329
user = ""
key = ""
url = "http://ws.audioscrobbler.com/2.0/?method=user.getlovedtracks&user=#{user}&api_key=#{key}"

# get the XML data as a string
xml_data = Net::HTTP.get_response(URI.parse(url)).body

# extract event information
doc = REXML::Document.new(xml_data)
titles = []
artists = []
dates = []
urls = []

doc.elements.each('lfm/lovedtracks/track/name') do |ele|
  titles << ele.text
end
doc.elements.each('lfm/lovedtracks/track/date') do |ele|
  dates << ele.text
end
doc.elements.each('lfm/lovedtracks/track/artist/name') do |ele|
   artists << ele.text
end
doc.elements.each('lfm/lovedtracks/track/url') do |ele|
   urls << "http://" + ele.text
end

# Create RSS feed
version = "2.0" # ["0.9", "1.0", "2.0"]
destination = "feed.xml" # local file to write

content = RSS::Maker.make(version) do |m|
  m.channel.title = "Tracks loved by #{user} at Last.fm"
  m.channel.link = "http://www.last.fm/user/#{user}"
  m.channel.description = "Tracks loved by #{user} at Last.fm"
  m.items.do_sort = true # sort items by date

  # loop through tracks
  titles.each_with_index do |title, idx|
     i = m.items.new_item
     i.title = "#{artists[idx]} - #{title}"
     i.link = urls[idx]
     i.date = Time.parse(dates[idx])
  end    
end

File.open(destination,"w") do |f|
f.write(content)
end