reactor = {}
capacitorBank = {}

local function init()
  --TODO: Search peripheral.getNames() to discover the names automatically.
  reactor = peripheral.wrap("BigReactors-Reactor_0")
  if reactor == nil
    print("Can't find a reactor!")
    return false
  end

  -- could be handy later
  --reactor.setAllControlRodLevels(90)

  capacitorBank = peripheral.wrap("bottom")
  if capacitorBank == nil
    print("Can't find a capacitor bank!")
    return false
  end

  return true
end

local function maybeTogglePower()
  local charge = capacitorBank.getEnergyStored() / capacitorBank.getMaxEnergyStored()
  if charge < 0.2 then
    reactor.setActive(true)
  elseif charge > 0.8 then
    reactor.setActive(false)
  end
end


if !init() then return end

while true do
  maybeTogglePower()
  os.sleep(3)
end