Aperture Science OS System - Error Handler

--this program searchs for errors, checks what Program sent the Error, and displays what Actions the User can take to fix the Error, or bypass it
local w, h = term.getSize()

function Search()
local event, id, success, reason = os.pullEvent("task_complete")
if success == true then
  Search()
else
  ErrorDetected(id, reason)
end
end

function ErrorDetected(id, reason)
term.clear()
print("error has occured in "..id)
print(id.."-"..reason)
print("please choose which action to commence")
print("1 - Shutdown")
print("2 - return to menu")
print("3 - start Scan")

while true do
  local event, key = os.pullEvent("key")
  if key == keys.one then
    shell.switchTab(1,shell.run("ShutdownPrompt"))
    break
  elseif key == keys.two then
    shell.switchTab(1,shell.run("ApertureOS_Base"))
    break
  elseif key == keys.three then
    shell.switchTab(1,shell.run("ShutdownPrompt"))
    break
  end
end
end

Search()