local TOKEN_IDS                 = {
  -- first row
  "p1", "0", "m1", "m2", "m3", "m4",
  -- second row
  "m5", "m6", "m7", "m8", "frost",
  -- third row
  "blue", "skull", "cultist", "tablet", "elder", "red"
}

local BUTTON_TOOLTIP = {
  -- first row
  "+1", "0", "-1", "-2", "-3", "-4",
  -- second row
  "-5", "-6", "-7", "-8", "Frost",
  -- third row
  "Elder Sign", "Skull", "Cultist", "Tablet", "Elder Thing", "Auto-fail"
}

local BUTTON_POSITION = {
  -- first row
  -1.90, -1.14, -0.38, 0.38, 1.14, 1.90,
  -- second row
  -1.90, -1.14, -0.38, 0.38, 1.90,
  -- third row
  -1.90, -1.14, -0.38, 0.38, 1.14, 1.90
}

-- common button parameters
local buttonParameters          = {}
buttonParameters.function_owner = self
buttonParameters.color          = { 0, 0, 0, 0 }
buttonParameters.width          = 300
buttonParameters.height         = 300

local name
local tokens = {}

function onLoad()
  -- create buttons for tokens
  for i = 1, #BUTTON_POSITION do
    local funcName = "buttonClick" .. i
    self.setVar(funcName, function(_, _, isRightClick) buttonClick(i, isRightClick) end)

    buttonParameters.click_function = funcName
    buttonParameters.tooltip        = BUTTON_TOOLTIP[i]
    buttonParameters.position       = { x = BUTTON_POSITION[i], y = 0, z = 0 }

    if i < 7 then
      buttonParameters.position.z = -0.778
    elseif i > 11 then
      buttonParameters.position.z = 0.755
    end

    self.createButton(buttonParameters)
  end
end

-- click function for buttons
function buttonClick(index, isRightClick)
  local tokenId = TOKEN_IDS[index]

  if isRightClick then
    Global.call("removeChaosToken", tokenId)
  else
    local tokens = {}
    local name = BUTTON_TOOLTIP[index]
    local chaosbag = Global.call("findChaosBag")

    for _, v in ipairs(chaosbag.getObjects()) do
      if v.name == name then table.insert(tokens, v.guid) end
    end

    -- spawn token (only 8 frost tokens allowed)
    if tokenId == "frost" and #tokens == 8 then
      printToAll("The maximum of 8 Frost tokens is already in the bag.", "Yellow")
      return
    end

    Global.call("spawnChaosToken", tokenId)
    printToAll("Adding " .. name .. " token (in bag: " .. #tokens + 1 .. ")", "White")
  end
end