UITool = UITool or {
	---@type table<PlayerKey, UTexture2D> 头像
	PlayerHeadPicture = {};
}

--- 设置
---@param widget UUserWidget
---@param offset float
function UITool.SetWidgetToRightBorder(widget, offset)
	if not widget then
		return
	end
	local slot = WidgetLayoutLibrary.SlotAsCanvasSlot(widget)
	slot:SetAnchors({ Minimum = { X = 1, Y = 0 }, Maximum = { X = 1, Y = 0 } })
	slot:SetAlignment({ X = 1, Y = 0 })
	local offsets = slot:GetOffsets()
	slot:SetOffsets({ Left = offset, Right = offsets.Right, Bottom = offsets.Bottom, Top = offsets.Top })
end

--- 为防止被清除做出的全局处理
function UITool.BindButtonClicked(TargetButton, Func, Obj)
	TargetButton.OnClicked:Add(Func, Obj)
end

--- 直接绑定按键点击打开WidgetManager的页面
function UITool.ButtonOnClickShowPanel(TargetButton, UIType)
	TargetButton.OnClicked:Add(
			function()
				WidgetManager:ShowPanel(UIType, false)
			end
	)
end

--- 绑定UI文本
function UITool.TextBlockBindingPropertyText(TargetTextBlock, Func, Obj)
    TargetTextBlock:BindingProperty("Text", Func, Obj)
end

function UITool.TextBlockBindingProperty(TargetWidget, PropertyName, Func, Obj)
    TargetWidget:BindingProperty(PropertyName, Func, Obj)
end

function UITool.SetBrushFromTexture(InImage, InIcon)
	InImage:SetBrushFromTexture(InIcon);
end

---@field IsSucceedFun:fun(Callback:fun(Texture:UTexture2DDynamic),DelegateWrapper:UObject)
function UITool.DownloadImage(ImageURL, IsSucceedFun)
	local ResHandle = AsyncTaskDownloadImage.DownloadImage(ImageURL)
	if type(IsSucceedFun) == "function" then
		ResHandle.OnSuccess:Add(IsSucceedFun)
		ResHandle.OnFail:Add(IsSucceedFun)
	end
end

--- 异步加载图片，成功后设置到UIImageObj，若该UIImageObj重复加载，则会判断设置时间决定是否设置
---@param UIImageObj UImage
---@param ResPath string
function UITool.AsyncLoadTextureToUIImage(UIImageObj, ResPath)
	if UITool.ImageObjUpdateTime == nil then
		-- {Obj = float, ...}
		UITool.ImageObjUpdateTime = {}
	end
	
	local BeginLoadTime = KismetSystemLibrary.GetGameTimeInSeconds(UGCGameSystem.GameState)
	local CallBackFunc = function(TextureObj)
		if UE.IsValid(TextureObj) then
			if UITool.ImageObjUpdateTime[UIImageObj] == nil
					or UITool.ImageObjUpdateTime[UIImageObj] < BeginLoadTime
			then
				UITool.ImageObjUpdateTime[UIImageObj] = BeginLoadTime
				UIImageObj:SetBrushFromTexture(TextureObj);
			end
		end
	end
	
	FileTool.AsyncLoadAsset(ResPath, CallBackFunc, nil, true)
end

function UITool.ButtonOnClickShowPanel(TargetButton, UIType)
	TargetButton.OnClicked:Add(function()
		WidgetManager:ShowPanel(UIType, false)
	end)
end

-- 加载一个头像
function UITool.LoadPlayerHeadPicture(InPlayerKey, InUrl)
	if InUrl ~= nil and UITool.PlayerHeadPicture[InPlayerKey] == nil then
		UITool.DownloadImage(InUrl, function(Texture)
			if UE.IsValid(Texture) then
				UITool.PlayerHeadPicture[InPlayerKey] = Texture
			else
				print(string.format("[UGCPlayerState:OnRep_AccountInfo] Download Texture Failure. URL: %s", Url))
			end
		end)
	end
end

--- 添加一个 继承自 PanelWidget 的控件的子类
---@param InBox UPanelWidget
---@param InClas UClass*
---@param InOwner UObject*
---@return UUserWidget*
function UITool.AddWidgetItem(InBox, InClas, InOwner)
	if InOwner == nil then
		InOwner = UGCGameSystem.GameState
	end
	local Item = UserWidget.NewWidgetObjectBP(InOwner, InClas);
	InBox:AddChild(Item);
	return Item;
end

-- PanelWidget 中从后面逐个隐藏 Item 的操作
function UITool.HideWidgetItem(InBox, InCount)
	if InBox == nil then
		return;
	end
	local Count = InBox:GetChildrenCount();
	if InCount == nil or InCount > Count then
		InCount = Count;
	end
	-- 从后往前逐个隐藏
	for i = 1, InCount do
		local Item = InBox:GetChildAt(Count - i);
		Item:SetVisibility(ESlateVisibility.Collapsed);
	end
end

UITool.ClearSpectateButtonTimer = nil;

-- 将观战页面退出按钮进行隐藏（否则点击到了直接退出就麻烦了）
function UITool.HideSpectate(InPC)
	if not UE.IsValid(InPC) then
		return;
	end
	
	self.ClearSpectateButtonTimer =  UGCEventSystem.SetTimerLoop(InPC, function()
		InPC:CastUIMsg("UIMsg_HideQuitWatch", "");
		UGCEventSystem.SetTimer(self, function()
			if UE.IsValid(self.ClearSpectateButtonTimer) then
				UGCEventSystem.StopTimer(self.ClearSpectateButtonTimer);
			end
		end, 15)
	end, 0.3)
end

--- 在滚动视图中的按钮可以被 handle 的方法
function UITool.EnableButtonScroll(InButton)
	InButton:SetTouchMethod(EButtonTouchMethod.PreciseTap)
end

function UITool.ButtonSetEnable(InButton, IsEnable)
	InButton:SetIsEnabled(IsEnable);
end

function UITool.GetChildrenCount(InBox)
	return InBox:GetChildrenCount();
end

function UITool.GetChildAt(InBox, InIndex)
	return InBox:GetChildAt(InIndex);
end