Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If a "U.A." monster is Normal Summoned to your side of the field: You can add 1 "U.A." monster from your Deck to your hand. Once per turn, if a "U.A." monster(s) is Special Summoned to your side of the field: All monsters you currently control gain 500 ATK (even if this card leaves the field).
--U.A.スタジアム
--U.A. Stadium
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--search
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_DELAY)
	e2:SetRange(LOCATION_FZONE)
	e2:SetCode(EVENT_SUMMON_SUCCESS)
	e2:SetTarget(s.target)
	e2:SetOperation(s.operation)
	c:RegisterEffect(e2)
	--atkup
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_ATKCHANGE)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e3:SetProperty(EFFECT_FLAG_DELAY)
	e3:SetCode(EVENT_SPSUMMON_SUCCESS)
	e3:SetRange(LOCATION_FZONE)
	e3:SetCountLimit(1)
	e3:SetCondition(s.atkcon)
	e3:SetOperation(s.atkop)
	c:RegisterEffect(e3)
end
s.listed_series={SET_UA}
function s.filter(c)
	return c:IsSetCard(SET_UA) and c:IsMonster() and c:IsAbleToHand()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	local tc=eg:GetFirst()
	if chk==0 then return tc:IsSetCard(SET_UA) and tc:IsControler(tp)
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsRelateToEffect(e) then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_DECK,0,1,1,nil)
	if #g>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end
function s.cfilter(c,tp)
	return c:IsFaceup() and c:IsSetCard(SET_UA) and c:IsControler(tp)
end
function s.atkcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.cfilter,1,nil,tp)
end
function s.atkop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) then return end
	local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,LOCATION_MZONE,0,nil)
	local tc=g:GetFirst()
	for tc in aux.Next(g) do
		local e3=Effect.CreateEffect(c)
		e3:SetType(EFFECT_TYPE_SINGLE)
		e3:SetCode(EFFECT_UPDATE_ATTACK)
		e3:SetReset(RESET_EVENT|RESETS_STANDARD)
		e3:SetValue(500)
		tc:RegisterEffect(e3)
	end
end