UGCEventSystem        = UGCEventSystem or {}
UGCEventSystem.Events = {};

-- 添加监听
function UGCEventSystem.AddListener(EventType, Func, Object)
	if UGC_PIE_LINUX_SERVER or PLATFORM_WINDOWS then
		assert(EventType ~= nil, string.format("[UGCEventSystem.AddListener] EventType 为空，这是不被允许的"));
	end
	if Func == nil or type(Func) ~= "function" then
		UGCLogSystem.LogError("[UGCEventSystem.AddListener] EventType or Func is nil!")
		return
	end
	
	local FuncData  = {}
	FuncData.Object = Object
	FuncData.Func   = Func
	
	if UGCEventSystem.Events[EventType] == nil then
		local NewEventFuncs = {}
		table.insert(NewEventFuncs, FuncData)
		UGCEventSystem.Events[EventType] = NewEventFuncs
		UGCLogSystem.Log("[UGCEventSystem.AddListener] EventType[%s], Func[%s]", tostring(EventType), tostring(Func))
	else
		table.insert(UGCEventSystem.Events[EventType], FuncData)
		UGCLogSystem.Log("[UGCEventSystem.AddListener] EventType[%s], Func[%s]", tostring(EventType), tostring(Func))
	end
end

-- 移除监听
function UGCEventSystem.RemoveListener(EventType, Func, Object)
	if UGC_PIE_LINUX_SERVER or PLATFORM_WINDOWS then
		assert(EventType ~= nil, string.format("[UGCEventSystem.RemoveListener] EventType 为空，这是不被允许的"));
	end
	if Func == nil then
		UGCLogSystem.LogError("[UGCEventSystem.RemoveListener] EventType or Func is nil!")
		return ;
	end
	if UGCEventSystem.Events[EventType] ~= nil then
		for i = #UGCEventSystem.Events[EventType], 1, -1 do
			local FuncData = UGCEventSystem.Events[EventType][i]
			if FuncData then
				if FuncData.Func == Func and FuncData.Object == Object then
					local result = table.removeKey(UGCEventSystem.Events[EventType], i)
					UGCLogSystem.Log("[UGCEventSystem.RemoveListener] EventType[%s], Func[%s]", tostring(EventType), tostring(result))
					break
				end
			end
		end
	else
		UGCLogSystem.LogError("[UGCEventSystem.RemoveListener] EventFuncs[%s] is nil!", tostring(EventType))
	end
end

-- 派发事件
function UGCEventSystem.SendEvent(EventType, ...)
	print(string.format("[UGCEventSystem.SendEvent] EventType: %s", tostring(EventType)))
	if UE_BUILD_DEBUG or WITH_ENGINE then
		assert(EventType ~= nil, string.format("[UGCEventSystem.SendEvent] EventType 为空，这是不被允许的"));
	end
	if EventType ~= nil then
		local EventFuncs = UGCEventSystem.Events[EventType];
		if EventFuncs ~= nil then
			for i, FuncData in pairs(EventFuncs) do
				if FuncData.Object ~= nil then
					FuncData.Func(FuncData.Object, ...)
				else
					FuncData.Func(...)
				end
			end
		end
	end
end

--- SetTimer
---@param Obj UObject
---@param Fun fun()
---@param IntevalSeconds float
---@return FTimerHandle
function UGCEventSystem.SetTimer(Obj, Fun, IntevalSeconds)
	UGCLogSystem.Log("[UGCEventSystem:SetTimer] 设置定时器 %s:%s", UE.GetPathName(Obj), tostring(Fun))
	local TimerDelegate = ObjectExtend.CreateDelegate(Obj, Fun, Obj)
	local Handle        = KismetSystemLibrary.K2_SetTimerDelegateForLua(TimerDelegate, Obj, IntevalSeconds, false)
	return {
		Object = Obj,
		Handle = Handle,
	};
end

--- SetTimerLoop
---@param Obj UObject
---@param Fun fun()
---@param IntevalSeconds float
---@return FTimerHandle
function UGCEventSystem.SetTimerLoop(Obj, Fun, IntevalSeconds)
	local TimerDelegate = ObjectExtend.CreateDelegate(Obj, Fun, Obj);
	local Handle        = KismetSystemLibrary.K2_SetTimerDelegateForLua(TimerDelegate, Obj, IntevalSeconds, true);
	local R             = {
		Object = Obj,
		Handle = Handle,
	};
	UGCLogSystem.Log("[UGCEventSystem:SetTimerLoop] 设置循环定时器 %s:%s H:%s", UE.GetPathName(Obj), tostring(Fun), tostring(R));
	return R;
end

--- StopTimer
---@param HandlePair FTimerHandle
function UGCEventSystem.StopTimer(HandlePair)
	if HandlePair == nil then
		UGCLogSystem.LogError("[UGCEventSystem:StopTimer] HandlePair is nil")
	else
		UGCLogSystem.Log("[UGCEventSystem:StopTimer] 停止定时器 Object:%s Handle:%s", UE.GetPathName(HandlePair.Object), tostring(HandlePair.Handle));
		KismetSystemLibrary.K2_ClearTimerHandle(HandlePair.Object, HandlePair.Handle);
		HandlePair = nil
	end
end

return UGCEventSystem