module Execute


end


require 'rubygems'
require 'ostruct'

# dat execute progress
# dat execute                   < default Configfile

module Execute
  def dependency(name)
    puts "Checking for #{name}..."

    unless gem_installed?(name)
      puts "Installing #{name}..."
      system("gem install #{name}")
    else
      puts "#{name} is already installed."
    end

    require name
  rescue LoadError => e
    puts "Failed to load #{name}: #{e.message}"
  end

  def gem_installed?(name)
    Gem::Specification::find_all_by_name(name).any?
  end

  def postgres
    require 'setup/postgresql'
    puts 'installing postgres'
    Setup::PostgreSQL.install
  end

  def service(name)
    if block_given?
      context = OpenStruct.new
      output = yield context
      puts output
      puts "context: #{context}"
    else
      puts "No block provided"
    end
  end

  def user(name)
    puts "Creating user: #{name}"
  end

  def install(*packages) 
    packages.each do |pkg|
      puts "Installing #{pkg}"
    end
  end

  def self.file(options)
    puts "options: #{options}"
    dsl = Object.new
    dsl.extend(Execute)
    # Configfile
    path = File.join(Dir.pwd, options.name || "./Configfile")
    dsl.instance_eval(File.read(path), path)
    # Execute the config
  end
end