class Journey::Router

# File lib/journey/router.rb, line 46
def initialize routes, options
  @options       = options
  @params_key    = options[:parameters_key]
  @request_class = options[:request_class] || NullReq
  @routes        = routes
end

# File lib/journey/router.rb, line 53
def call env
  env['PATH_INFO'] = Utils.normalize_path env['PATH_INFO']

  find_routes(env).each do |match, parameters, route|
    script_name, path_info, set_params = env.values_at('SCRIPT_NAME',
                                                       'PATH_INFO',
                                                       @params_key)

    unless route.path.anchored
      env['SCRIPT_NAME'] = (script_name.to_s + match.to_s).chomp('/')
      env['PATH_INFO']   = Utils.normalize_path(match.post_match)
    end

    env[@params_key] = (set_params || {}).merge parameters

    status, headers, body = route.app.call(env)

    if 'pass' == headers['X-Cascade']
      env['SCRIPT_NAME'] = script_name
      env['PATH_INFO']   = path_info
      env[@params_key]   = set_params
      next
    end

    return [status, headers, body]
  end

  return [404, {'X-Cascade' => 'pass'}, ['Not Found']]
end

# File lib/journey/router.rb, line 83
def recognize req
  find_routes(req.env).each do |match, parameters, route|
    unless route.path.anchored
      req.env['SCRIPT_NAME'] = match.to_s
      req.env['PATH_INFO']   = match.post_match.sub(/^([^\/])/, '/\1')
    end

    yield(route, nil, parameters)
  end
end

# File lib/journey/router.rb, line 94
def visualizer
  tt     = GTG::Builder.new(ast).transition_table
  groups = partitioned_routes.first.map(&:ast).group_by { |a| a.to_s }
  asts   = groups.values.map { |v| v.first }
  tt.visualizer asts
end