local phaseNames = {
  "I. Mythos Phase",
  "II. Investigation Phase",
  "III. Enemy Phase",
  "IV. Upkeep Phase"
}
local phaseImages = {
  "http://cloud-3.steamusercontent.com/ugc/933819604050849085/9E22AFD7B0157140FC177DBCCBCB1D61D6A0329F/",
  "http://cloud-3.steamusercontent.com/ugc/933819604050885611/845B5AA915F30492B5F34864698B9C3627FA5763/",
  "http://cloud-3.steamusercontent.com/ugc/982233321870235122/492996D07ABF6DDA4B605A3013C4892839DCF1F3/",
  "http://cloud-3.steamusercontent.com/ugc/982233321870237261/C287CAED2423970F33E72D6C7415CBEC6794C533/"
}

function onSave()
  return JSON.encode({
    phaseId = phaseId,
    broadcastChange = broadcastChange
  })
end

function onLoad(savedData)
  if savedData and savedData ~= "" then
    local loadedData = JSON.decode(savedData)
    phaseId = loadedData.phaseId
    broadcastChange = loadedData.broadcastChange
  else
    phaseId = 1
    broadcastChange = false
  end

  self.createButton(
    {
      tooltip = "change phase",
      click_function = 'changeState',
      function_owner = self,
      width = 600,
      height = 600
    })

  self.addContextMenuItem("toggle broadcasting", updateBroadcast)
end

function updateBroadcast()
  for _, tracker in ipairs(getObjectsWithTag("LinkedPhaseTracker")) do
    tracker.setVar("broadcastChange", not broadcastChange)
  end
  broadcastToAll("Broadcasting phase changes has been " .. (broadcastChange and "enabled." or "disabled."))
end

function changeState(_, _, isRightClick)
  -- get newId for all trackers
  local newId = phaseId + (isRightClick and -1 or 1)
  if newId == 0 then
    newId = 4
  elseif newId == 5 then
    newId = 1
  end

  -- broadcast if option is enabled
  if broadcastChange then
    broadcastToAll(phaseNames[newId])
  end

  -- manipulate data and then respawn
  local data = self.getData()
  data["CustomImage"]["ImageURL"] = phaseImages[newId]
  data["CustomImage"]["ImageSecondaryURL"] = phaseImages[newId]
  data["LuaScriptState"] = "{\"broadcastChange\":" .. tostring(broadcastChange) .. ",\"phaseId\":" .. newId .. "}"

  -- update all trackers with tag
  for _, tracker in ipairs(getObjectsWithTag("LinkedPhaseTracker")) do
    local pos = tracker.getPosition()
    local rot = tracker.getRotation()
    local scale = tracker.getScale()
    tracker.destruct()
    spawnObjectData(
      {
        data = data,
        position = pos,
        rotation = rot,
        scale = scale
      }
    )
  end
end