Creates a playlist for every artist in your library -- since the Roku app doesn't have browsing by artists.

create_playlists_from_artists_for_rdio

#!/usr/bin/env ruby
#
# Creates a playlist for every artist in your library -- since the
# Roku app doesn't have browsing by artists.  The following need to be
# in the ENV:
# 
#  export RDIO_KEY=...  
#  export RDIO_SECRET=...
#
# You can pass in the email or username as the first argument.  If not
# provided we use the current user.
#
# You have to install the rdio gem, too.
#

require 'rubygems'
require 'rdio'

def main(argv)

  # Use the first argument as the email or vanity name if available,
  # otherwise use the current user
  if argv.empty?
    user = Rdio::User.current
  else
    user = Rdio::User.find argv.shift
  end

  # Turn off the warning for not finding symbols...It's quite annoying
  Rdio::log_couldnt_find_symbols = false

  # Collect all the artists for this user
  artists = []
  start = 0
  count = 10
  while true
    all = user.artists_in_collection start,count
    break if not all or all.empty?
    artists += all
    puts "Found #{all.length} artists, have #{artists.length}"
    start += count
  end
  
  # Go over all the artists, create a new playlist for each
  artists.each do |artist|
    name = artist.name
    desc = artist.name + ' All'
    tracks = user.tracks_for_artist_in_collection artist
    pl = Rdio::Playlist.create name,desc,tracks
    next if not pl
    puts "Added '#{pl.name}' with #{tracks.length} tracks"
  end
  
end

main ARGV