UITool = UITool or {}

if UE_SERVER then return UITool; end

--- 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

--- 为防止被清除做出的全局处理
function UITool.BindButtonPressed(TargetButton, Func, Obj)
	TargetButton.OnPressed: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

--- 遍历所有子项
---@param InBox UPanelWidget
---@param InFunc fun(index: int32, Widget: UUserWidget)
function UITool.ForeachAllChildren(InBox, InFunc)
	if type(InFunc) ~= 'function' then return ; end
	for i = 1, InBox:GetChildrenCount() do
		local Item = InBox:GetChildAt(i - 1);
		InFunc(i, Item);
	end
end

--- 隐藏所有子项
---@param InBox UPanelWidget
function UITool.HideAllChildren(InBox)
	UITool.ForeachAllChildren(InBox, function(index, Widget)
		Widget:SetVisibility(ESlateVisibility.Collapsed);
	end)
end

--- 自动适配数量
---@param InBox UPanelWidget
---@param InCount int32
---@param InClass UClass
---@param Func fun(Widget:UUserWidget, Index:int32)
function UITool.AdaptChildren(InBox, InCount, InClass, Func, ...)
	local Count       = UITool.GetChildrenCount(InBox)
	local TargetCount = InCount - Count;
	if TargetCount == 0 then
	elseif TargetCount < 0 then
		-- 说明当前多了
		for i = Count, InCount + 1, -1 do
			local Item = InBox:GetChildAt(i - 1);
			Item:SetVisibility(ESlateVisibility.Collapsed);
		end
	else
		for i = Count + 1, InCount, 1 do
			UITool.AddWidgetItem(InBox, InClass, InBox);
		end
	end
	local Params = { ... };
	UITool.ForeachAllChildren(InBox, function(index, Widget)
		if Func and type(Func) == 'function' then Func(Widget, index, table.unpackTable(Params)); end
	end)
end

---@param Fmt string
function UITool.ShowTips(Fmt, ...)
	UGCWidgetManagerSystem.ShowTipsUI(string.format(Fmt, ...));
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)
---@field FailedFun fun()
function UITool.DownloadImage(ImageURL, IsSucceedFun, FailedFun)
	local ResHandle = AsyncTaskDownloadImage.DownloadImage(ImageURL)
	if type(IsSucceedFun) == "function" then
		ResHandle.OnSuccess:Add(IsSucceedFun)
		if FailedFun ~= nil and type(FailedFun) == 'function' then
			ResHandle.OnFail:Add(FailedFun)
		end
	end
end

function UITool.ButtonOnClickShowPanel(TargetButton, UIType, IsShow)
	TargetButton.OnClicked:Add(function()
		if IsShow then
			WidgetManager:ShowPanel(UIType, false)
		else
			WidgetManager:ClosePanel(UIType)
		end
	end)
end

--- 自动适配数量
---@param InBox UPanelWidget
---@param InCount int32
---@param InClass UClass
---@param Func fun(Widget:UUserWidget, Index:int32)
function UITool.AdaptChildren(InBox, InCount, InClass, Func, ...)
	local Count       = UITool.GetChildrenCount(InBox)
	local TargetCount = InCount - Count;
	if TargetCount == 0 then
	elseif TargetCount < 0 then
		-- 说明当前多了
		for i = Count, InCount + 1, -1 do
			local Item = InBox:GetChildAt(i - 1);
			Item:SetVisibility(ESlateVisibility.Collapsed);
		end
	else
		for i = Count + 1, InCount, 1 do
			UITool.AddWidgetItem(InBox, InClass, InBox);
		end
	end
	local Params = { ... };
	UITool.ForeachAllChildren(InBox, function(index, Widget)
		if Func and type(Func) == 'function' then Func(Widget, index, table.unpackTable(Params)); 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

function UITool.SliderOnValueChanged(Slider, Func, Obj)
	Slider.OnValueChanged:Add(Func, Obj)
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(InPC, function()
			if UE.IsValid(self.ClearSpectateButtonTimer) then
				UGCEventSystem.StopTimer(self.ClearSpectateButtonTimer);
			end
		end, 10)
	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