last_fm_stats.rb

# http://chartkick.com/

require 'lastfm-client'
#require 'ap'
#require 'pry'
#require 'json'

LastFM.api_key = ''
LastFM.client_name = 'stats'

last_fm_user = 'roman_blanco'

recent_tracks = []
recent_tracks_pages_count = LastFM::User.get_recent_tracks(
  :user => last_fm_user
)["recenttracks"]["@attr"]["totalPages"].to_i

print "pages to load:  "
recent_tracks_pages_count.times { print '.' }
print "\npages loaded:   "
recent_tracks_pages_count.times do |page|
  next if page.zero?
  next unless page == 1 # FIXME debug mode
  tracks_on_page = LastFM::User.get_recent_tracks(
    :user => last_fm_user,
    :page => page
  )
  recent_tracks.push(*tracks_on_page["recenttracks"]["track"])
  print '.'
end
puts ''
recent_tracks.each_with_index do |track, index|
  track['info'] = LastFM::Track.get_info(
    {
      :artist => track["artist"]["#text"],
      :track => track["name"]
    }
  )
  print "loading tracks details: #{index + 1} / #{recent_tracks.count}\r"
  $stdout.flush
end

#File.open('stats_2', 'w+') { |file| file.write(recent_tracks) }
#binding.pry

# tags by date
recent_tracks.map do |track|
  {
    :date => track["date"]["uts"],
    :tags => track["info"]["track"]["toptags"]["tag"]
  }
end

# most listened artist
recent_tracks.map { |track|
  track["artist"]["#text"]
}.inject(Hash.new(0)) { |total, e|
  total[e] += 1 ; total
}.sort_by(&:last).reverse.to_h

# dates of scrobbled tracks
recent_tracks.map { |track| DateTime.parse(track["date"]["#text"]) }