Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
All face-up monsters on the field become Machine monsters. Machine monsters you control gain 500 ATK/DEF, also Machine monsters your opponent controls lose 500 ATK/DEF. You can banish this card from your GY, then discard 1 card; add 1 EARTH Machine monster from your Deck to your hand. You can only use this effect of "Clockwork Night" once per turn. You can only activate 1 "Clockwork Night" per turn.
--機械仕掛けの夜－クロック・ワーク・ナイト－
--Clockwork Night
--Scripted by DyXel
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)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	c:RegisterEffect(e1)
	--All monsters become Machine
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_CHANGE_RACE)
	e2:SetRange(LOCATION_SZONE)
	e2:SetTargetRange(LOCATION_MZONE,LOCATION_MZONE)
	e2:SetValue(RACE_MACHINE)
	c:RegisterEffect(e2)
	--Increase the ATK/DEF of Machine monsters you control by 500
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_FIELD)
	e3:SetCode(EFFECT_UPDATE_ATTACK)
	e3:SetRange(LOCATION_SZONE)
	e3:SetTargetRange(LOCATION_MZONE,LOCATION_MZONE)
	e3:SetTarget(aux.TargetBoolFunction(Card.IsRace,RACE_MACHINE))
	e3:SetValue(function(e,c) return c:IsControler(e:GetHandlerPlayer()) and 500 or -500 end)
	c:RegisterEffect(e3)
	local e4=e3:Clone()
	e4:SetCode(EFFECT_UPDATE_DEFENSE)
	c:RegisterEffect(e4)
	--Banish itself from GY; Search EARTH Machine
	local e5=Effect.CreateEffect(c)
	e5:SetDescription(aux.Stringid(id,0))
	e5:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e5:SetType(EFFECT_TYPE_IGNITION)
	e5:SetRange(LOCATION_GRAVE)
	e5:SetCountLimit(1,{id,1})
	e5:SetCost(s.thcost)
	e5:SetTarget(s.thtg)
	e5:SetOperation(s.thop)
	c:RegisterEffect(e5)
end
function s.thcost(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return c:IsAbleToRemoveAsCost() and Duel.IsExistingMatchingCard(Card.IsDiscardable,tp,LOCATION_HAND,0,1,nil) end
	Duel.Remove(c,POS_FACEUP,REASON_COST)
	Duel.DiscardHand(tp,Card.IsDiscardable,1,1,REASON_COST|REASON_DISCARD)
end
function s.thfilter(c)
	return c:IsAttribute(ATTRIBUTE_EARTH) and c:IsRace(RACE_MACHINE) and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.thfilter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,s.thfilter,tp,LOCATION_DECK,0,1,1,nil)
	if #g==0 then return end
	Duel.SendtoHand(g,nil,REASON_EFFECT)
	Duel.ConfirmCards(1-tp,g)
end