local lfs = require("lfs")

local modpath = "/etc/haproxy/mods"

local compile = {}
local lua_version = "5.3"
local user = "haproxy"
local group = "haproxy"
local libs = {"-ljansson", "-lmaxminddb"}

function compile.check(module)
  local sourcepath = modpath.."/"..module..".c"
  local binpath = modpath.."/"..module..".so"

  local binexists = io.open(binpath)

  if not binexists or (binexists and lfs.attributes(sourcepath).change > lfs.attributes(binpath).change ) then
    local cmd = "cc -I/usr/include/ -I/usr/include/lua" .. lua_version .. "/ -fPIC -shared -o " .. binpath .. " " .. sourcepath .. " " ..table.concat(libs," ")
    local res = io.popen(cmd)
    local aa = res:read("a*")
    io.popen("chown "..user..":"..group.." "..binpath)
    io.popen("chmod 600 "..binpath)
  end
end

return compile