Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
2 Level 4 monsters Other LIGHT monsters you control gain 500 ATK. You can only use each of the following effects of "Galaxy Photon Dragon" once per turn. You can detach 1 material from this card; either add 1 "Photon" or "Galaxy" card from your Deck to your hand, or send it to the GY. If a LIGHT monster(s) is Special Summoned to your field (except during the Damage Step): You can target 1 of those monsters; its Level becomes 4 or 8 until the end of this turn.
--銀河光子竜
--Galaxy Photon Dragon
--Scripted by Larry126
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--Xyz Summon
	Xyz.AddProcedure(c,nil,4,2)
	--Increase ATK
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_UPDATE_ATTACK)
	e1:SetRange(LOCATION_MZONE)
	e1:SetTargetRange(LOCATION_MZONE,0)
	e1:SetTarget(function(e,c) return c:IsAttribute(ATTRIBUTE_LIGHT) and c~=e:GetHandler() end)
	e1:SetValue(500)
	c:RegisterEffect(e1)
	--Search or send to the GY
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH+CATEGORY_TOGRAVE)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1,id)
	e2:SetCost(Cost.DetachFromSelf(1,1,nil))
	e2:SetTarget(s.target)
	e2:SetOperation(s.operation)
	c:RegisterEffect(e2)
	--Change levels to 4 or 8
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_LVCHANGE)
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DELAY)
	e3:SetCode(EVENT_CUSTOM+id)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCountLimit(1,{id,1})
	e3:SetTarget(s.lvtg)
	e3:SetOperation(s.lvop)
	c:RegisterEffect(e3)
	local g=Group.CreateGroup()
	g:KeepAlive()
	e3:SetLabelObject(g)
	--Register Special Summon of LIGHT monsters
	local e4=Effect.CreateEffect(c)
	e4:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e4:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
	e4:SetCode(EVENT_SPSUMMON_SUCCESS)
	e4:SetRange(LOCATION_MZONE)
	e4:SetLabelObject(e3)
	e4:SetOperation(s.regop)
	c:RegisterEffect(e4)
end
s.listed_series={SET_PHOTON,SET_GALAXY}
function s.filter(c)
	return c:IsSetCard({SET_PHOTON,SET_GALAXY}) and (c:IsAbleToHand() or c:IsAbleToGrave())
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetPossibleOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
	Duel.SetPossibleOperationInfo(0,CATEGORY_TOGRAVE,nil,1,tp,LOCATION_DECK)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local tc=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_DECK,0,1,1,nil):GetFirst()
	aux.ToHandOrElse(tc,tp)
end
function s.cfilter(c,e,tp)
	return c:IsFaceup() and c:IsAttribute(ATTRIBUTE_LIGHT) and c:HasLevel() and c:IsControler(tp)
		and c:IsLocation(LOCATION_MZONE) and c:IsCanBeEffectTarget(e)
end
function s.regop(e,tp,eg,ep,ev,re,r,rp)
	local tg=eg:Filter(s.cfilter,nil,e,tp)
	if #tg>0 then
		for tc in tg:Iter() do
			tc:RegisterFlagEffect(id,RESET_CHAIN,0,1)
		end
		local g=e:GetLabelObject():GetLabelObject()
		if Duel.GetCurrentChain()==0 then g:Clear() end
		g:Merge(tg)
		g:Remove(function(c) return c:GetFlagEffect(id)==0 end,nil)
		e:GetLabelObject():SetLabelObject(g)
		Duel.RaiseSingleEvent(e:GetHandler(),EVENT_CUSTOM+id,e,0,tp,tp,0)
	end
end
function s.lvtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	local g=e:GetLabelObject():Filter(s.cfilter,nil,e,tp)
	if chkc then return g:IsContains(chkc) and s.cfilter(chkc,e,tp) end
	if chk==0 then return #g>0 end
	local tc=nil
	if #g==1 then
		tc=g:GetFirst()
	else
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
		tc=g:Select(tp,1,1,nil)
	end
	Duel.SetTargetCard(tc)
	Duel.SetOperationInfo(0,CATEGORY_LVCHANGE,tc,1,tp,LOCATION_MZONE)
end
function s.lvop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsFaceup() and tc:IsRelateToEffect(e) and tc:HasLevel() then
		local lv=Duel.AnnounceLevel(tp,4,8,5,6,7,tc:GetLevel())
		--Change its Level
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_CHANGE_LEVEL)
		e1:SetValue(lv)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e1)
	end
end