Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Activate 1 of these effects: ● Draw 1 card. ● Activate only if your opponent controls a face-up Spirit monster. Draw 2 cards.
--八汰烏の骸
--Legacy of Yata-Garasu
local s,id=GetID()
function s.initial_effect(c)
	--Draw 1 card or 2 if the opponent controls a Spirit monster
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DRAW)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_card_types={TYPE_SPIRIT}
function s.filter(c)
	return c:IsType(TYPE_SPIRIT) and c:IsFaceup()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp,1) end
	local d=1
	if Duel.GetFieldGroupCount(tp,LOCATION_DECK,0)>1
		and Duel.IsExistingMatchingCard(s.filter,tp,0,LOCATION_MZONE,1,nil)
		and Duel.SelectOption(tp,aux.Stringid(id,0),aux.Stringid(id,1))==1 then
		d=2
	end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(d)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,d)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Draw(p,d,REASON_EFFECT)
end