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 have to install the rdio gem, too.
#

require 'rubygems'
require 'rdio'

def main(args)

  # Save all the argument, because we use gets for the PIN
  argv = []
  argv << args.shift while not args.empty?

  # Always use the current user because we could pass other arguments
  user = Rdio::User.current

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

  
  artists = []

  
  if argv.empty?
    #
    # Collect all the artists for this user for no args
    #
    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
  else
    #
    # Otherwise, we assume the arguments are artist URLs
    #
    argv.each do |arg|
      all = []
      begin
        artist = Rdio::Artist.from_url arg
        all << artist if artist
      rescue Exception => e
        puts "Couldn't get artist #{arg} from url"
        puts e
      end
      if all.empty?
        begin
          artist = Rdio::Artist.from_short_code arg
          all << artist if artist
        rescue Exception => e
          puts "Couldn't get artist #{arg} from short code"
          puts e
        end
      end
      if all.empty?
        begin
          all = Rdio::Artist.search arg,nil,['name']
        rescue Exception => e
          puts e
        end
      end
      artists += all
      puts "Found #{all.length} artists, have #{artists.length}"
    end
  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