class Ougai::Formatters::Readable

def call(severity, time, progname, data)
  msg = data.delete(:msg)
  strs = ["[#{time.iso8601(3)}] #{colored_level(severity)}: #{msg}"]
  if data.key?(:err)
    err = data.delete(:err)
    err_str = "  #{err[:name]} (#{err[:message]}):"
    err_str += "\n    " + err[:stack] if err.key?(:stack)
    strs.push(err_str)
  end
  unless data.empty?
    strs.push(data.ai)
  end
  strs.join("\n") + "\n"
end

def colored_level(severity)
  case severity
  when 'INFO'
    color = '0;36'
  when 'WARN'
    color = '0;33'
  when 'ERROR'
    color = '0;31'
  when 'FATAL'
    color = '0;35'
  else # DEBUG
    color = '0;37'
  end
  "\e[#{color}m#{severity}\e[0m"
end

def initialize(app_name = nil, hostname = nil)
  super(app_name, hostname)
  @trace_indent = 4
  load_dependency
end

def load_dependency
  require 'awesome_print'
rescue LoadError
  puts 'You must install the awesome_print gem to use this output.'
  raise
end