-- PRIVATE METHODS


function IconController:_updateSelectionGroup(clearAll)
	if IconController._navigationEnabled then
		guiService:RemoveSelectionGroup("TopbarPlusIcons")
	end
	if clearAll then
		guiService.CoreGuiNavigationEnabled = IconController._originalCoreGuiNavigationEnabled
		guiService.GuiNavigationEnabled = IconController._originalGuiNavigationEnabled
		IconController._navigationEnabled = nil
	elseif IconController.controllerModeEnabled then
		local icons = IconController.getIcons()
		local iconContainers = {}
		for i, otherIcon in pairs(icons) do
			local featureName = otherIcon.joinedFeatureName
			if not featureName or otherIcon._parentIcon[otherIcon.joinedFeatureName.."Open"] == true then
				table.insert(iconContainers, otherIcon.instances.iconButton)
			end
		end
		guiService:AddSelectionTuple("TopbarPlusIcons", table.unpack(iconContainers))
		if not IconController._navigationEnabled then
			IconController._originalCoreGuiNavigationEnabled = guiService.CoreGuiNavigationEnabled
			IconController._originalGuiNavigationEnabled = guiService.GuiNavigationEnabled
			guiService.CoreGuiNavigationEnabled = false
			guiService.GuiNavigationEnabled = true
			IconController._navigationEnabled = true
		end
	end
end

local function getScaleMultiplier()
	if guiService:IsTenFootInterface() then
		return 3
	else
		return 1.3
	end
end

function IconController._setControllerSelectedObject(object)
	local startId = (IconController._controllerSetCount and IconController._controllerSetCount + 1) or 0
	IconController._controllerSetCount = startId
	guiService.SelectedObject = object
	delay(0.1, function() -- blame the roblox guiservice its a piece of doo doo
		local finalId = IconController._controllerSetCount
		if startId == finalId then
			guiService.SelectedObject = object
		end
	end)
end

function IconController._enableControllerMode(bool)
	local indicator = TopbarPlusGui.Indicator
	local controllerOptionIcon = IconController.getIcon("_TopbarControllerOption")
	if IconController.controllerModeEnabled == bool then
		return
	end
	IconController.controllerModeEnabled = bool
	if bool then
		TopbarPlusGui.TopbarContainer.Position = UDim2.new(0,0,0,5)
		TopbarPlusGui.TopbarContainer.Visible = false
		local scaleMultiplier = getScaleMultiplier()
		indicator.Position = UDim2.new(0.5,0,0,5)
		indicator.Size = UDim2.new(0, 18*scaleMultiplier, 0, 18*scaleMultiplier)
		indicator.Image = "rbxassetid://5278151556"
		indicator.Visible = checkTopbarEnabled()
		indicator.Position = UDim2.new(0.5,0,0,5)
	else
		TopbarPlusGui.TopbarContainer.Position = UDim2.new(0,0,0,0)
		TopbarPlusGui.TopbarContainer.Visible = checkTopbarEnabled()
		indicator.Visible = false
		IconController._setControllerSelectedObject(nil)
	end
	for icon, _ in pairs(topbarIcons) do
		IconController._enableControllerModeForIcon(icon, bool)
	end
end

function IconController._enableControllerModeForIcon(icon, bool)
	local parentIcon = icon._parentIcon
	local featureName = icon.joinedFeatureName
	if parentIcon then
		icon:leave()
	end
	if bool then
		local scaleMultiplier = getScaleMultiplier()
		local currentSizeDeselected = icon:get("iconSize", "deselected")
		local currentSizeSelected = icon:get("iconSize", "selected")
		icon:set("iconSize", UDim2.new(0, currentSizeDeselected.X.Offset*scaleMultiplier, 0, currentSizeDeselected.Y.Offset*scaleMultiplier), "deselected", "controllerMode")
		icon:set("iconSize", UDim2.new(0, currentSizeSelected.X.Offset*scaleMultiplier, 0, currentSizeSelected.Y.Offset*scaleMultiplier), "selected", "controllerMode")
		icon:set("alignment", "mid", "deselected", "controllerMode")
		icon:set("alignment", "mid", "selected", "controllerMode")
	else
		local states = {"deselected", "selected"}
		for _, toggleState in pairs(states) do
			local _, previousAlignment = icon:get("alignment", toggleState, "controllerMode")
			if previousAlignment then
				icon:set("alignment", previousAlignment, toggleState)
			end
			local currentSize, previousSize = icon:get("iconSize", toggleState, "controllerMode")
			if previousSize then
				icon:set("iconSize", previousSize, toggleState)
			end
		end
	end
	if parentIcon then
		icon:join(parentIcon, featureName)
	end
end