namespace :album do
  desc "metadata handling for a given album"
  namespace :metadata do
    desc "generate metadata for an album in a given path"
    task :generate do
      puts ""
      print "Type the album path:   "
      path = STDIN.gets.chomp
      if File.directory?(path)
        puts "Title:"
        title = STDIN.gets.chomp
        unless title.nil?
          puts "Description (optional):"
          description = STDIN.gets.chomp
          puts "Author (optional):"
          author = STDIN.gets.chomp
          info = {"album" => {"title" => title, "description" => description, "author" => author}}
          File.open("#{path}/.info.yml", 'w+') {|f| f.write(info.to_yaml) }
        else
          puts "Title cannot be empty. Run the task again"  
        end
      else
        puts "Sorry but #{path.inspect} entered is not a folder. Run the task again"
      end
    end

    desc "retrieve metadata album based on path"
    task :check do
      puts ""
      print "Type the album path:   "
      path = STDIN.gets.chomp
      info_file = "#{path}/.info.yml"
      if File.directory?(path) && File.exists?(info_file)
        data = YAML.load_file(info_file)['album']
        puts "Title: #{data['title']}"
        puts "Description: #{data['description']}"
        puts "Author: #{data['author']}"
      else
        puts "Sorry but #{path.inspect} entered is not a folder. Run the task again"
      end
    end
  end
end