local Luan = require "luan:Luan.luan"
local error = Luan.error
local String = require "luan:String.luan"
local trim = String.trim or error()
local regex = String.regex or error()
local contains = String.contains or error()
local Table = require "luan:Table.luan"
local concat = Table.concat or error()
local Http = require "luan:http/Http.luan"
local Logging = require "luan:logging/Logging.luan"
local logger = Logging.logger "error_log.js"


local bad_agents = {
	[[Version/14\.]]
}
local bad_agents_ptn = regex(concat(bad_agents,"|"))

local function priority(err)
	local agent = Http.request.headers["user-agent"]
	if agent~=nil and bad_agents_ptn.matches(agent) then return "info" end
	return "error"
end

return function()
	local err = Http.request.parameters.err
	if err == nil then
		return  -- stupid bots
	end
	local call = priority(err)
	logger[call](trim(err).."\n"..trim(Http.request.raw_head).."\n")
end