generate

#!/usr/bin/env ruby

require 'fileutils'

PROJECTS_DIR = File.dirname(__FILE__)

def write_solution(project_dir)
  solution = File.join(project_dir, 'solution')
  File.open(solution, 'w') { |io| io << "\#!/usr/bin/env ruby" }
  FileUtils.chmod(0755, solution)
end

def write_rakefile(project_dir)
  rakefile = <<-EOF
require 'rake'
require 'rake/testtask'

Rake::TestTask.new(:default) { |t| t.pattern = 'test_solution.rb' }
EOF

  File.open(File.join(project_dir, 'Rakefile'), 'w') { |io| io << rakefile }
end

def write_test(project_dir)
  test = <<-'EOF';
require 'test/unit'

class TestSolution < Test::Unit::TestCase

  INPUT =
  OUTPUT =

  SOLUTION = File.join(File.dirname(__FILE__), "solution")

  def test_solution
    results = `#{SOLUTION} #{INPUT}`.chomp
    raise "error!" unless $?.success?

    assert_equal(results.to_i, OUTPUT)
  end

end
EOF

  File.open(File.join(project_dir, 'test_solution.rb'), 'w') do |io|
    io << test
  end
end

project = ARGV
project_dir = File.join(PROJECTS_DIR, project)

FileUtils.mkdir_p(project_dir)
write_solution(project_dir)
write_rakefile(project_dir)
write_test(project_dir)

puts "Project created: #{project}"