local zone = nil
local CHAOS_TOKEN_NAMES = {
  "Elder Sign",
  "+1",
  "0",
  "-1",
  "-2",
  "-3",
  "-4",
  "-5",
  "-6",
  "-7",
  "-8",
  "Skull",
  "Cultist",
  "Tablet",
  "Elder Thing",
  "Auto-fail",
  "Bless",
  "Curse",
  "Frost"
}

-- general code
function onSave()
  return JSON.encode(zone and zone.getGUID() or nil)
end

function onLoad(savedData)
  if savedData ~= "" and savedData ~= nil then
    zone = getObjectFromGUID(JSON.decode(savedData))
  end
  setMenu(zone == nil)
end

-- context menu functions
function enable()
  local scale = self.getScale()

  zone = spawnObject({
    type = "ScriptingTrigger",
    position = self.getPosition() + Vector(0, 2.5 + 0.11, 0),
    rotation = self.getRotation(),
    scale = { scale.x * 2, 5, scale.z * 2 }
  })

  setMenu(false)
end

function disable()
  if zone ~= nil then zone.destruct() end
  setMenu(true)
end

-- core functions
function setMenu(isEnabled)
  self.clearContextMenu()
  if isEnabled then
    self.addContextMenuItem("Enable", enable)
  else
    self.addContextMenuItem("Disable", disable)
  end
end

function onObjectEnterScriptingZone(entering, object)
  if zone ~= entering or object == self or object.type == "Deck" or object.type == "Card" then
    return
  end

  local name = object.getName()
  for _, entry in ipairs(CHAOS_TOKEN_NAMES) do
    if entry == name then return end
  end

  object.destruct()
end

function onPickUp()
  disable()
end