Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Special Summon 2 "Photon Tokens" (Thunder/LIGHT/Level 4/ATK 2000/DEF 0) in Defense Position. These Tokens cannot attack or be used as Synchro Material. You cannot Summon other monsters the turn you activate this card, except LIGHT monsters.
--フォトン・サンクチュアリ
--Photon Sanctuary
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_TOKEN)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
	Duel.AddCustomActivityCounter(id,ACTIVITY_SUMMON,s.counterfilter)
	Duel.AddCustomActivityCounter(id,ACTIVITY_SPSUMMON,s.counterfilter)
	Duel.AddCustomActivityCounter(id,ACTIVITY_FLIPSUMMON,s.counterfilter)
end
s.listed_names={17418745}
function s.counterfilter(c)
	return c:IsAttribute(ATTRIBUTE_LIGHT)
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetCustomActivityCount(id,tp,ACTIVITY_SUMMON)==0
		and Duel.GetCustomActivityCount(id,tp,ACTIVITY_SPSUMMON)==0 
		and Duel.GetCustomActivityCount(id,tp,ACTIVITY_FLIPSUMMON)==0 end
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET+EFFECT_FLAG_OATH)
	e1:SetCode(EFFECT_CANNOT_SPECIAL_SUMMON)
	e1:SetReset(RESET_PHASE|PHASE_END)
	e1:SetTargetRange(1,0)
	e1:SetTarget(s.sumlimit)
	Duel.RegisterEffect(e1,tp)
	local e2=e1:Clone()
	e2:SetCode(EFFECT_CANNOT_SUMMON)
	Duel.RegisterEffect(e2,tp)
	local e3=e1:Clone()
	e3:SetCode(EFFECT_CANNOT_FLIP_SUMMON)
	Duel.RegisterEffect(e3,tp)
	local e4=Effect.CreateEffect(e:GetHandler())
	e4:SetProperty(EFFECT_FLAG_PLAYER_TARGET+EFFECT_FLAG_CLIENT_HINT)
	e4:SetDescription(aux.Stringid(id,1))
	e4:SetReset(RESET_PHASE|PHASE_END)
	e4:SetTargetRange(1,0)
	Duel.RegisterEffect(e4,tp)
end
function s.sumlimit(e,c,sump,sumtype,sumpos,targetp,se)
	return c:IsAttribute(ATTRIBUTE_ALL&~ATTRIBUTE_LIGHT)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return not Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT)
		and Duel.GetLocationCount(tp,LOCATION_MZONE)>1
		and Duel.IsPlayerCanSpecialSummonMonster(tp,id+1,SET_PHOTON,TYPES_TOKEN,2000,0,4,RACE_THUNDER,ATTRIBUTE_LIGHT) end
	Duel.SetOperationInfo(0,CATEGORY_TOKEN,nil,2,0,0)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,2,tp,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	if not Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT) and Duel.GetLocationCount(tp,LOCATION_MZONE)>1
		and Duel.IsPlayerCanSpecialSummonMonster(tp,id+1,SET_PHOTON,TYPES_TOKEN,2000,0,4,RACE_THUNDER,ATTRIBUTE_LIGHT) then
		for i=1,2 do
			local token=Duel.CreateToken(tp,id+1)
			Duel.SpecialSummonStep(token,0,tp,tp,false,false,POS_FACEUP_DEFENSE)
			local e1=Effect.CreateEffect(e:GetHandler())
			e1:SetType(EFFECT_TYPE_SINGLE)
			e1:SetCode(EFFECT_CANNOT_ATTACK)
			e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
			e1:SetReset(RESET_EVENT|RESETS_STANDARD)
			token:RegisterEffect(e1,true)
			local e2=Effect.CreateEffect(e:GetHandler())
			e2:SetType(EFFECT_TYPE_SINGLE)
			e2:SetCode(EFFECT_CANNOT_BE_SYNCHRO_MATERIAL)
			e2:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
			e2:SetValue(1)
			e2:SetReset(RESET_EVENT|RESETS_STANDARD)
			token:RegisterEffect(e2,true)
		end
		Duel.SpecialSummonComplete()
	end
end