cells = {}
for _, v in pairs(peripheral.getNames()) do
  t = peripheral.getType(v)
  if t == "BigReactors-Reactor" then
    reactor = peripheral.wrap(v)
  elseif t == "BigReactors-Turbine" then
    turbine = peripheral.wrap(v)
  elseif t == "tile_thermalexpansion_cell_resonant_name" then
    table.insert(cells, peripheral.wrap(v))
  end
end

maxEnergy = 1*1000*1000 + table.getn(cells)*80*1000*1000
targetRotorSpeed = 4500
thresholdOff = 90
thresholdOn  = 10

function getEnergyStored()
  e = turbine.getEnergyStored()
  for _, c in pairs(cells) do
    e = e + c.getEnergyStored()
  end
  return e
end

lastEnergy = getEnergyStored()

function updateReactor()
  energy = getEnergyStored()
  energyPC = math.floor(energy/maxEnergy*10000)/100

  if energyPC >= thresholdOff then
    activate = false
  elseif energyPC < thresholdOn then
    activate = true
  else
    activate = reactor.getActive()
  end

  reactor.setActive(activate)

  write("Power ")
  write(energyPC)
  write("%")

  if activate then
    write(" - ON")
  else
    write(" - OFF")
  end

  underspeed = turbine.getRotorSpeed() < targetRotorSpeed * 0.99
  turbine.setInductorEngaged(not underspeed)
  if (active and underspeed) then
    write(" - spinning up")
  end
  if energy < lastEnergy then
    write(" - draining")
  elseif energy > lastEnergy then
    write(" - charging")
  end

  write("\n")
  lastEnergy = energy
end

function update()
  while true do
    term.clear()
    term.setCursorPos(1,1)
    print("[Hit Enter to exit]")
    updateReactor()
    sleep(1)
  end
end

function waitForUser()
  repeat
    local event,key = os.pullEvent("key")
  until key == keys.enter

  reactor.setActive(false)
  print("When you're done, please relaunch startup")
end

parallel.waitForAny(update, waitForUser)