class Rage::TextFormatter

def call(severity, timestamp, _, message)
  tags, context = Fiber[:__rage_logger_tags] || [], Fiber[:__rage_logger_context] || {}
  if !context.empty?
    context_msg = ""
    context.each { |k, v| context_msg << "#{k}=#{v} " }
  end
  if (final = Fiber[:__rage_logger_final])
    params, env = final[:params], final[:env]
    tags = tags.map { |tag| "[#{tag}]" }.join
    if params && params[:controller]
      return "#{tags} timestamp=#{timestamp} pid=#{@pid} level=info method=#{env["REQUEST_METHOD"]} path=#{env["PATH_INFO"]} controller=#{Rage::Router::Util.path_to_name(params[:controller])} action=#{params[:action]} #{context_msg}status=#{final[:response][0]} duration=#{final[:duration]}\n"
    else
      # no controller/action keys are written if there are no params
      return "#{tags} timestamp=#{timestamp} pid=#{@pid} level=info method=#{env["REQUEST_METHOD"]} path=#{env["PATH_INFO"]} #{context_msg}status=#{final[:response][0]} duration=#{final[:duration]}\n"
    end
  end
  if tags.length == 1
    tags_msg = "[#{tags[0]}] timestamp=#{timestamp} pid=#{@pid} level=#{severity}"
  elsif tags.length == 2
    tags_msg = "[#{tags[0]}][#{tags[1]}] timestamp=#{timestamp} pid=#{@pid} level=#{severity}"
  elsif tags.length == 0
    tags_msg = "timestamp=#{timestamp} pid=#{@pid} level=#{severity}"
  else
    tags_msg = "[#{tags[0]}][#{tags[1]}]"
    i = 2
    while i < tags.length
      tags_msg << "[#{tags[i]}]"
      i += 1
    end
    tags_msg << " timestamp=#{timestamp} pid=#{@pid} level=#{severity}"
  end
  "#{tags_msg} #{context_msg}message=#{message}\n"
end

def initialize
  @pid = Process.pid
  Iodine.on_state(:on_start) do
    @pid = Process.pid
  end
end