---@class BP_BuffController_C:AActor
---@field DefaultSceneRoot USceneComponent
---@field PlayerBuffs table<int32, table<int32, BuffItem>> <PlayerKey = { [BuffId = BuffItem]}> 所有玩家拥有的 Buff
---@field GlobalBuffIndex int32

--Edit Below--
---@type BP_BuffController_C
local BP_BuffController = {
	-- 玩家拥有的Buff
	PlayerBuffs = {};
	
	-- Buff 添加的 Index
	GlobalBuffIndex = 0;
};

BP_BuffController.ControllerInst = nil;

function BP_BuffController:ReceiveBeginPlay()
	self.SuperClass.ReceiveBeginPlay(self);
end

function BP_BuffController.GetBuffController()
	if BP_BuffController.ControllerInst == nil then
		local AllActor = GameplayStatics.GetAllActorsOfClass(UGCGameSystem.GameState, BP_BuffController.GetSelfClass(), {})
		if AllActor:Num() > 0 then
			BP_BuffController.ControllerInst = AllActor[0];
		else
			BP_BuffController.ControllerInst = ScriptGameplayStatics.SpawnActor(UGCGameSystem.GameState, BP_BuffController.GetManagerClass(),
					VectorHelper.VectorZero(),
					VectorHelper.RotZero(),
					VectorHelper.ScaleOne());
		end
	end
	return BP_BuffController.ControllerInst;
end

function BP_BuffController:ReceiveTick(DeltaTime)
	self.SuperClass.ReceiveTick(self, DeltaTime);
	
	self:TickBuff(DeltaTime);
	
	if self:HasAuthority() then
		--- 移除时间到了的 Buff
		local ServerTime = KismetSystemLibrary.GetGameTimeInSeconds(self);
		local RemoveBuffs = {};
		for PlayerKey, Buffs in pairs(self.PlayerBuffs) do
			for BuffId, BuffItem in pairs(Buffs) do
				if BuffItem.ContinueTime > 0 then
					for BuffIndex, SingleItem in pairs(BuffItem.Items) do
						if SingleItem.EndTime <= ServerTime then
							RemoveBuffs[#RemoveBuffs + 1] = {
								PlayerKey = PlayerKey,
								BuffId = BuffId,
								RemoveIndex = BuffIndex, -- 这个index是 GlobalBuffIndex
							};
						end
					end
				end
			end
		end
		for i = 1, #RemoveBuffs do
			self:RemoveBuff(RemoveBuffs[i].PlayerKey, RemoveBuffs[i].BuffId, RemoveBuffs[i].RemoveIndex);
		end
	end
end

--[[
function BP_BuffController:ReceiveEndPlay()
    self.SuperClass.ReceiveEndPlay(self); 
end
--]]

function BP_BuffController:GetReplicatedProperties()
	return "PlayerBuffs"
end

--[[
function BP_BuffController:GetAvailableServerRPCs()
    return
end
--]]

--- 给玩家添加 Buff
---@protected
---@param InPlayerKey int32 玩家 Key
---@param InBuffId int32 BuffType
---@return
function BP_BuffController:AddBuff(InPlayerKey, InBuffId, ...)
	local ActionInfo = BuffConfig.BuffActionInfo[InBuffId];
	if ActionInfo == nil then
		UGCLogSystem.Log("[BP_BuffController:AddBuff_Private] 不存在当前 BuffId: %d", InBuffId)
		return nil
	end
	local BuffInst = require(ActionInfo.Path);
	if BuffInst == nil then
		UGCLogSystem.LogError("[BP_BuffController:AddBuff_Private] 无法 require Buff[%d]：[%s]", InBuffId, ActionInfo.Path);
		return nil;
	end
	
	-- 添加到表中
	if self.PlayerBuffs[InPlayerKey] == nil then
		self.PlayerBuffs[InPlayerKey] = {};
	end
	if self.PlayerBuffs[InPlayerKey][InBuffId] == nil then
		self.PlayerBuffs[InPlayerKey][InBuffId] = {};
	end
	
	self.GlobalBuffIndex = self.GlobalBuffIndex + 1;
	local ServerTime = KismetSystemLibrary.GetGameTimeInSeconds(self);
	
	--- 检查一下是否需要冷却
	
	-- 开启 Init
	table.func(BuffInst, "Init", InBuffId, InPlayerKey, ...)
	
	-- 添加的瞬间就会执行一次
	table.func(BuffInst, "ApplyBuff", InBuffId, InPlayerKey, ...);
	
	--- 将参数放到每一个 Inst里面
	BuffInst["Vars"] = {
		InBuffId,
		InPlayerKey,
		...
	};
	
	-- 判断是否需要一添加就移除
	if BuffInst["bRunOnce"] ~= nil and BuffInst["bRunOnce"] == true then
		UGCLogSystem.Log("[BP_BuffController:AddBuff_Private] BuffId: %d 只执行一次", InBuffId)
		return BuffInst;
	end
	
	local CooldownTime = BuffInst["CooldownTime"];
	if type(CooldownTime) ~= "number" then
		CooldownTime = 0;
	end
	
	self.PlayerBuffs[InPlayerKey][InBuffId][self.GlobalBuffIndex] = {
		StartTime = ServerTime,
		Inst = BuffInst,
		PlayerKey = InPlayerKey,
		BuffId = InBuffId,
		EndTime = ServerTime + CooldownTime,
	};
	
	return BuffInst;
end

function BP_BuffController:RemoveBuff(InPlayerKey, InBuffId, InBuffIndex)
	local BuffItem = self.PlayerBuffs[InPlayerKey][InBuffId][InBuffIndex];
	self:RemoveBuff(BuffItem.Inst);
end

function BP_BuffController:RemoveBuff(InBuffInst)
	-- 遍历所有
	for PlayerKey, Buffs in pairs(self.PlayerBuffs) do
		local RemoveBuffId = nil;
		for BuffId, BuffItem in pairs(Buffs) do
			local Index = nil;
			for BuffIndex, SingleItem in pairs(BuffItem.Items) do
				if SingleItem.Inst == InBuffInst then
					-- 移除当前的
					Index = BuffIndex;
				end
			end
			if Index ~= nil then
				table.func(BuffItem[Index].Inst, "RemoveBuff", table.unpackTable(BuffItem[Index].Inst.Vars))
				BuffItem[Index] = nil; -- 移除
			end
			
			if table.isEmpty(BuffItem) then
				RemoveBuffId = BuffId;
			end
		end
		if RemoveBuffId ~= nil then
			Buffs[RemoveBuffId] = nil;
		end
	end
end

---@param InPlayerKey int32 要移除的玩家 Key
function BP_BuffController:RemovePlayerBuff(InPlayerKey)
	for BuffId, BuffItem in pairs(self.PlayerBuffs[InPlayerKey]) do
		for BuffIndex, SingleItem in pairs(BuffItem.Items) do
			table.func(SingleItem.Inst, "RemoveBuff", table.unpackTable(SingleItem.Inst.Vars));
		end
	end
	self.PlayerBuffs[InPlayerKey] = {};
end

function BP_BuffController:TickBuff(InDeltaTime)
	if self:HasAuthority() then
		for PlayerKey, Buffs in pairs(self.PlayerBuffs) do
			for BuffId, BuffItem in pairs(Buffs) do
				for BuffIndex, SingleItem in pairs(BuffItem.Items) do
					table.func(SingleItem.Inst, "Tick", SingleItem.BuffId, SingleItem.PlayerKey, InDeltaTime);
				end
			end
		end
	end
end

function BP_BuffController.GetSelfClass()
	return UE.LoadClass(UGCGameSystem.GetUGCResourcesFullPath('Asset/Blueprint/BUFF/BP_BuffController.BP_BuffController_C'));
end

return BP_BuffController;