local skynet = require "skynet"
local skynet_error = skynet.error
local string_format = string.format
local table_insert = table.insert
local os_date = os.date
local os_time = os.time

local const_header = { "(T)|", "(D)|", "(I)|", "(W)|", "(E)|", "(F)|", "(TS)" }
local header = const_header
local function print(level, fmt, ...)
  skynet_error(
      os_date("[%m/%d %X]", os_time()),
      header[level],
      string_format(fmt, ...))
end

local logger = {}
function logger.label(name)
  if name then
    header = {}
    for _, v in ipairs(const_header) do
      table_insert(header, v..name)
    end
  else
    header = const_header
  end
end

function logger.test(fmt, ...) print(7, fmt, ...) end
-- function logger.test(fmt, ...)  end
function logger.trace(fmt, ...) print(1, fmt, ...) end
function logger.debug(fmt, ...) print(2, fmt, ...) end
function logger.info(fmt, ...) print(3, fmt, ...) end
function logger.warn(fmt, ...) print(4, fmt, ...) end
function logger.error(fmt, ...) print(5, fmt, ...) end
function logger.fatal(fmt, ...) print(6, fmt, ...) end
return logger