BuffTable = {};

---@class EBuffTypeInfo
---@field AddHealth_Quick int32
---@field AddHealth_Slow int32
---@field AddSpeed int32
---@field AddBodySize int32
---@field AddHealthMax int32
---@field ReduceHealth_Quick int32
---@field ReduceHealthMax int32
---@field ReduceSpeed int32
---@field SmallBody int32
---@field AddJump int32
---@field ReduceJump int32
BuffTable.EBuffType = {
	AddHealth_Quick                = 1,
	AddHealth_Slow                 = 2,
	AddSpeed                       = 3,
	AddBodySize                    = 4,
	AddHealthMax                   = 5,
	ReduceHealth_Quick             = 6,
	ReduceHealthMax                = 7,
	ReduceSpeed                    = 8,
	SmallBody                      = 9,
	ReduceHealth_Slow              = 10,
	
	AddJump                        = 11,
	ReduceJump                     = 12,
	--AddBodySize_Slow               = 13,
}

--- 当添加 Buff 是否是一直持有的
BuffTable.DurableAdd = true;
BuffTable.BuffChangeInterval = 1;

---@class BuffInfoItem
---@field Chinese string
---@field Rate float
---@field ContinueTime float
---@field Value float

---@type table<EBuffTypeInfo, BuffInfoItem>
BuffTable.BuffInfo = {
	[BuffTable.EBuffType.AddHealth_Quick] = {
		Chinese = "快速加血",
		Rate = 10,
		ContinueTime = 0,
		Value = 20,
	},
	[BuffTable.EBuffType.AddHealth_Slow] = {
		Chinese = "缓慢回血",
		Rate = 15,
		ContinueTime = 5,
		Value = 3,
	},
	[BuffTable.EBuffType.ReduceHealth_Quick] = {
		Chinese = "快速扣血",
		Rate = 0,
		ContinueTime = 0,
		Value = 20,
	},
	[BuffTable.EBuffType.AddHealthMax] = {
		Chinese = "增加最大生命值",
		Rate = 50,
		ContinueTime = 0,
		Value = 0.1,
	},
	[BuffTable.EBuffType.AddSpeed] = {
		Chinese = "加速",
		Rate = 10,
		ContinueTime = 0,
		Value = 0.1,
	},
	[BuffTable.EBuffType.AddBodySize] = {
		Chinese = "增大体型",
		Rate = 50,
		ContinueTime = 0,
		Value = 0.1,
	},
	[BuffTable.EBuffType.ReduceHealthMax] = {
		Chinese = "降低最大生命值",
		Rate = 0,
		ContinueTime = 0,
		Value = 0.1,
	},
	[BuffTable.EBuffType.ReduceSpeed] = {
		Chinese = "减速",
		Rate = 0,
		ContinueTime = 0,
		Value = 0.1,
	},
	[BuffTable.EBuffType.SmallBody] = {
		Chinese = "减小体型",
		Rate = 0,
		ContinueTime = 0,
		Value = 0.1,
	},
	[BuffTable.EBuffType.ReduceHealth_Slow] = {
		Chinese = "缓慢扣血",
		Rate = 0,
		ContinueTime = 5,
		Value = 3,
	},
	[BuffTable.EBuffType.AddJump] = {
		Chinese = "跳跃增强",
		Rate = 10,
		ContinueTime = 0,
		Value = 0.1,
	},
	[BuffTable.EBuffType.ReduceJump] = {
		Chinese = "跳跃减弱",
		Rate = 0,
		ContinueTime = 0,
		Value = 0.1,
	},
}

---@type table<int32, int32>
BuffTable.BuffIdTable = {};

--- 初始化 BuffTable
function InitBuffTable()
	BuffTable.LoadBuffIdTable()
end

---@param InIndex int32
function BuffTable.GetBuffName(InIndex)
	for i, v in pairs(BuffTable.EBuffType) do
		if InIndex == v then return i; end
	end
	return nil;
end

---@param BuffName string
function BuffTable.CheckBuffExist(BuffName)
	return BuffTable.EBuffType[BuffName] ~= nil;
end

function BuffTable.LoadBuffIdTable()
	BuffTable.BuffIdTable = {};
	for i, v in pairs(BuffTable.EBuffType) do
		BuffTable.BuffIdTable[#BuffTable.BuffIdTable + 1] = v;
	end
end

---@type table<int32, any>
BuffTable.ValidBuffs = {};
BuffTable.ValidBuffCount = nil;

--- 获取可用的 Buff
function BuffTable.GetValidBuffIds()
	BuffTable.ValidBuffs = {};
	local Total = 0;
	for i = 1, #BuffTable.BuffInfo do
		local BuffInfo = BuffTable.BuffInfo[i]
		if BuffInfo.Rate > 0 then
			Total = Total + BuffInfo.Rate;
			BuffTable.ValidBuffs[#BuffTable.ValidBuffs + 1] = {
				Rate = BuffInfo.Rate;
				Type = i;
			};
		end
	end
	BuffTable.ValidBuffCount = Total;
end

--- 随机选取一个 Buff
---@return EBuffType
function BuffTable.RandomBuff()
	if table.isEmpty(BuffTable.ValidBuffs) then BuffTable.GetValidBuffIds(); end
	--UGCLogSystem.LogTree(string.format("[BuffTable.RandomBuff] BuffTable.ValidBuffs ="), BuffTable.ValidBuffs)
	local Num = math.random(BuffTable.ValidBuffCount)
	--UGCLogSystem.Log("[BuffTable.RandomBuff] Num = %d", Num);
	for i, v in pairs(BuffTable.ValidBuffs) do
		Num = Num - v.Rate;
		if Num <= 0 then return v.Type; end
	end
	return 1;
end

---@param InBuffItem FBuffAction
---@param IsAdd bool
function BuffTable.ApplyBuff(InBuffItem, IsAdd)
	if IsServer then
		local Simple = 1;
		if IsAdd == false then Simple = -1; end
		local Pawn = InBuffItem:GetOwnerPawn();
		local Value = BuffTable.BuffInfo[InBuffItem:GetBuffType()].Value;
		if BuffTable.DurableAdd then
			UGCLogSystem.Log("[BuffTable.ApplyBuff] Value = %s", tostring(Value));
			GameState:AddPlayerAttribute(Pawn.PlayerKey, InBuffItem:GetBuffKey(), Simple * Value);
		else
			-- 添加到玩家列表中
			Pawn:AddBenefit(InBuffItem:GetBuffKey(), Simple * Value)
		end
		Pawn:UseOneBenefit(InBuffItem:GetBuffKey(), true);
	end
end