local unicode = require("unicode")
local component = require("component")
local computer = require("computer")

local libcomputer = {
    address = computer.address,
    tmpAddress = computer.tmpAddress,
    shutdown = function() coroutine.yield("COMPUTER_SHUTDOWN") end,
    pushSignal = computer.pushSignal,
    pullSignal = computer.pullSignal,
    getDeviceInfo = computer.getDeviceInfo,
    freeMemory = computer.freeMemory,
    totalMemory = computer.totalMemory,
    uptime = computer.uptime,
    energy = computer.energy,
    maxEnergy = computer.maxEnergy,
    users = computer.users,
    addUser = function() end,
    removeUser = function() end,
    beep = computer.beep,
    getProgramLocations = computer.getProgramLocations,
    getArchitecture = computer.getArchitecture,
    getArchitectures = computer.getArchitectures,
    setArchitecture = function() end
}

local sandbox = {
    assert = assert,
    error = error, -- todo
    _G = nil,
    getmetatable = getmetatable,
    next = next,
    pairs = pairs,
    pcall = pcall,
    rawequal = rawequal,
    rawget = rawget,
    rawlen = rawlen,
    rawset = rawset,
    select = select,
    setmetatable = setmetatable,
    tonumber = tonumber,
    tostring = tostring,
    type = type,
    _VERSION = _VERSION,
    xpcall = xpcall,
    coroutine = coroutine,
    string = string,
    table = table,
    math = math,
    bit32 = bit32,
    os = {
        clock = os.clock,
        date = os.date,
        difftime = os.difftime,
        execute = nil,
        exit = nil,
        remove = nil,
        rename = nil,
        time = os.time,
        tmpname = nil
    },
    debug = debug,
    utf8 = utf8,
    checkArg = checkArg,
    component = libcomponent,
    computer = libcomputer,
    unicode = unicode
}