artists_played_by_a_programmes_brand.rb

gistfile1.rb

require 'open-uri'
require 'json'
require 'date'
require 'pp'

brand_pids = ['b0100rp6', 'b0072lb2', 'b006tmr6', 'b01mrh21', 'b006wr19']
brand_pids.each do |brand_pid|
  now = Time.now

  url = "http://www.bbc.co.uk/programmes/#{brand_pid}/episodes/#{now.year}/#{now.month}.json"
  begin
    data = JSON.parse open(url).read
  rescue
    puts "oops! #{url}"
    next
  end

  episodes = data['broadcasts'].
    select { |b| Time.parse(b['start']) < now }[0...10].
    map { |b| b['programme'] }

  artists = {}
  artist_count = Hash.new(0)

  episodes.map do |episode|
    url = "http://www.bbc.co.uk/programmes/#{episode['pid']}/segments.json"
    segment_events_data = JSON.parse open(url).read
    segment_events_data['segment_events'].each do |segment_event|
      artist = segment_event['segment']['primary_contributor'] if segment_event['segment']['primary_contributor']
      if artist['musicbrainz_gid']
        artists[artist['musicbrainz_gid']] ||= artist
        artist_count[artist['musicbrainz_gid']] += 1
      end
    end
  end
  
  puts "*[#{episodes.first['programme']['title']}|http://www.bbc.co.uk/programmes/#{episodes.first['programme']['pid']}]*"
  puts "||artist||count||"
  artist_count.
    sort { |a,b| b.last <=> a.last }[0...10].
    map { |a| [artists[a.first], a.last] }.
    each { |a| puts "|[#{a.first['name']}|http://www.bbc.co.uk/music/artists/#{a.first['musicbrainz_gid']}]|#{a.last}|" }
  puts ""
end