Lua script for loading and executing files from URLs in FICSIT Network

FIN-load-from-url.lua

-- All the scripts that should be loaded.
-- Put then in load order
local URLs = {
  "https://gist.githubusercontent.com/ruliana/b48dcbaa1ddd92882e9a3cca36d6777f/raw/819bb7ebbd530a1d94601549fd6ae819ecea1cf4/FIN-item-flow-measurement.lua"
}

local card = computer.getPCIDevices(findClass("FINInternetCard"))[1]
if not card then
  error("Internet card not found")
end

function getFromInternet(scriptURL)
  local req = card:request(scriptURL, "GET", "")

  print(string.format("Requesting \"%s\"", scriptURL))
  local status, libdata = req:await()
  if status ~= 200 then
    error(string.format("Error %d on GET \"%s\"", status, scriptURL))
  end
  print("Done!")
  return libdata
end

for _, scriptURL in ipairs(URLs) do
  local libdata = getFromInternet(scriptURL)

  filesystem.initFileSystem("/dev")
  filesystem.makeFileSystem("tmpfs", "tmp")
  filesystem.mount("/dev/tmp","/")
  local file = filesystem.open("main.lua", "+a")
  file:write(libdata)
  file:close()
end

-- load the library from the file system and run it
local json = filesystem.doFile("main.lua")