Gmod Lua server restart prevent

reboot_prevent.lua

local config = {
    ['commandName'] = 'reboot_prevent',
    ['timer'] = 10,
    ['iterations'] = 5
}

if SERVER then
    local timerIteration = 1

    function launchReboot(time)
        timer.Simple(time, function ()
            PrintMessage(4, 'Server is restarting')
            RunConsoleCommand('_restart')
        end)
        timer.Create('rebootTimer', config['iterations'], (time / config['iterations']) - 1, function ()
            local remaining = time - (timerIteration * config['iterations'])
            PrintMessage(4, 'Server will restart in ' .. remaining .. ' seconds.')
            timerIteration = timerIteration + 1
        end)
    end
end

-- SHARED CODE --
concommand.Add(config['commandName'], function(ply, cmd, args)
    if not (ply:IsAdmin()) then return false end

    if SERVER then launchReboot(config['timer']) end
end)