class Cucumber::Cli::Main

def configuration
  return @configuration if @configuration

  @configuration = Configuration.new(@out_stream, @error_stream)
  @configuration.parse!(@args)
  @configuration
end

def each_lib
  requires = configuration.files_to_require
  verbose_log("Ruby files required:")
  verbose_log(requires.map{|lib| "  * #{lib}"}.join("\n"))
  requires.each do |lib|
    begin
      yield lib
    rescue LoadError => e
      e.message << "\nFailed to load #{lib}"
      raise e
    end
  end
  verbose_log("\n")
end

def enable_diffing
  if configuration.diff_enabled?
    begin
      require 'spec/expectations'
      begin
        require 'spec/runner/differs/default' # RSpec >=1.2.4
      rescue ::LoadError
        require 'spec/expectations/differs/default' # RSpec <=1.2.3
      end
      options = OpenStruct.new(:diff_format => :unified, :context_lines => 3)
      ::Spec::Expectations.differ = ::Spec::Expectations::Differs::Default.new(options)
    rescue ::LoadError => ignore
    end
  end
end

def execute(args)
  new(args).execute!(@step_mother)
end

def execute!(step_mother)
  trap_interrupt
  if configuration.drb?
    begin
      return DRbClient.run(@args, @error_stream, @out_stream)
    rescue DRbClientError => e
      @error_stream.puts "WARNING: #{e.message} Running features locally:"
      configuration.parse!(@args)
    end
  end
  step_mother.options = configuration.options
  # Feature files must be loaded before files are required.
  # This is because i18n step methods are only aliased when
  # features are loaded. If we swap the order, the requires
  # will fail.
  features = load_plain_text_features
  require_files
  enable_diffing
  visitor = configuration.build_formatter_broadcaster(step_mother)
  step_mother.visitor = visitor # Needed to support World#announce
  visitor.visit_features(features)
  failure = if configuration.wip?
    step_mother.scenarios(:passed).any?
  else
    step_mother.scenarios(:failed).any? || 
    (configuration.strict? && step_mother.steps(:undefined).any?)
  end
end

def initialize(args, out_stream = STDOUT, error_stream = STDERR)
  @args         = args
  @out_stream   = out_stream == STDOUT ? Formatter::ColorIO.new : out_stream
  @error_stream = error_stream
end

def load_files
  each_lib{|lib| load(lib)}
end

def load_plain_text_features
  features = Ast::Features.new
  verbose_log("Features:")
  configuration.feature_files.each do |f|
    feature_file = FeatureFile.new(f)
    feature = feature_file.parse(configuration.options)
    if feature
      features.add_feature(feature)
      verbose_log("  * #{f}")
    end
  end
  verbose_log("\n"*2)
  features
end

def require_files
  each_lib{|lib| require lib}
end

def step_mother
  @step_mother
end

def step_mother=(step_mother)
  @step_mother = step_mother
  @step_mother.extend(StepMother)
  @step_mother.snippet_generator = StepDefinition
end

def trap_interrupt
  trap('INT') do
    $cucumber_interrupted = true
  end
end

def verbose_log(string)
  @out_stream.puts(string) if configuration.verbose?
end