Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
During your Main Phase: You can reveal 1 LIGHT Fairy monster in your hand, and if you do, add 1 Level 7 LIGHT Dragon monster from your Deck to your hand, then place that revealed monster on the bottom of your Deck. If your opponent activates a card or effect: You can Special Summon 1 Level 7 LIGHT Dragon monster from your hand. You can only use 1 "Starry Knight Ceremony" effect per turn, and only once that turn.
--聖なる降誕
--Starry Knight Ceremony
--scripted by Logical Nonsense
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e0=Effect.CreateEffect(c)
	e0:SetType(EFFECT_TYPE_ACTIVATE)
	e0:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e0)
	--Reveal 1 LIGHT Fairy monster in your hand, and if you do, add 1 Level 7 LIGHT Dragon monster from your Deck to your hand, then place that revealed monster on the bottom of your Deck
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH+CATEGORY_TODECK)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_SZONE)
	e1:SetCountLimit(1,id)
	e1:SetTarget(s.thtg)
	e1:SetOperation(s.thop)
	c:RegisterEffect(e1)
	--Special Summon 1 Level 7 LIGHT Dragon monster from your hand
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_DELAY)
	e2:SetCode(EVENT_CHAINING)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCountLimit(1,id)
	e2:SetCondition(function(e,tp,eg,ep) return ep==1-tp end)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
end
function s.revealfilter(c)
	return c:IsAttribute(ATTRIBUTE_LIGHT) and c:IsRace(RACE_FAIRY) and not c:IsPublic() and c:IsAbleToDeck()
end
function s.thfilter(c)
	return c:IsLevel(7) and c:IsAttribute(ATTRIBUTE_LIGHT) and c:IsRace(RACE_DRAGON) and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.revealfilter,tp,LOCATION_HAND,0,1,nil)
		and Duel.IsExistingMatchingCard(s.thfilter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
	Duel.SetOperationInfo(0,CATEGORY_TODECK,nil,1,tp,LOCATION_HAND)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_CONFIRM)
	local rg=Duel.SelectMatchingCard(tp,s.revealfilter,tp,LOCATION_HAND,0,1,1,nil)
	if #rg==0 then return end
	Duel.ConfirmCards(1-tp,rg)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local sg=Duel.SelectMatchingCard(tp,s.thfilter,tp,LOCATION_DECK,0,1,1,nil)
	if #sg==0 or Duel.SendtoHand(sg,nil,REASON_EFFECT)==0 then return Duel.ShuffleHand(tp) end
	Duel.ConfirmCards(1-tp,sg)
	Duel.ShuffleDeck(tp)
	Duel.BreakEffect()
	Duel.SendtoDeck(rg,nil,SEQ_DECKBOTTOM,REASON_EFFECT)
end
function s.spfilter(c,e,tp)
	return c:IsLevel(7) and c:IsAttribute(ATTRIBUTE_LIGHT) and c:IsRace(RACE_DRAGON) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_HAND,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_HAND,0,1,1,nil,e,tp)
	if #g>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
	end
end