module GetHappy

# File lib/get_happy/engine.rb, line 40
def ensure_user_data!
  unless File.directory?(COLLECTION_DIR)
    FileUtils.mkdir_p(COLLECTION_DIR)
  end

  File.open(COLLECTION, "w") do |file|
    file.write [].to_yaml
  end unless File.file?(COLLECTION) 
end

# File lib/get_happy/engine.rb, line 27
def get_collection
  ensure_user_data!
  YAML::load_file(COLLECTION)
end

# File lib/get_happy/engine.rb, line 32
def get_playlist(id)
  url = "http://gdata.youtube.com/feeds/api/playlists/#{id}?v=2&alt=json"
  request = Net::HTTP.get_response(URI.parse(url))
  success = request.is_a? Net::HTTPSuccess
  data   = JSON.parse(request.body, :symbolize_names => true) if success
  success ? data[:feed][:entry].map {|e| e[:link].first[:href]} : []
end

# File lib/get_happy/engine.rb, line 23
def seed
  write_collection get_collection + @urls
end

# File lib/get_happy/engine.rb, line 16
def write_collection(collection)
  collection = collection.compact.uniq
  File.open(COLLECTION, "w") do |file|
    file.write collection.to_yaml
  end 
end