Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When you activate this card, change any Defense Position monster(s) to face-up Attack Position. Flip Effects are not activated at this time. If a monster attacks, destroy it at the end of that turn's Battle Phase.
--古の森
--Ancient Forest
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_POSITION)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
	--destroy
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_DESTROY)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e2:SetRange(LOCATION_FZONE)
	e2:SetCountLimit(1)
	e2:SetCode(EVENT_PHASE|PHASE_BATTLE)
	e2:SetTarget(s.destg)
	e2:SetOperation(s.desop)
	c:RegisterEffect(e2)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	local g=Duel.GetMatchingGroup(Card.IsDefensePos,tp,LOCATION_MZONE,LOCATION_MZONE,nil)
	Duel.SetOperationInfo(0,CATEGORY_POSITION,g,#g,0,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsRelateToEffect(e) then return end
	local g=Duel.GetMatchingGroup(Card.IsDefensePos,tp,LOCATION_MZONE,LOCATION_MZONE,nil)
	if #g>0 then
		Duel.ChangePosition(g,0,0,POS_FACEUP_ATTACK,POS_FACEUP_ATTACK,true)
	end
end
function s.desfilter(c)
	return c:GetAttackedCount()>0
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.desfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
	local g=Duel.GetMatchingGroup(s.desfilter,Duel.GetTurnPlayer(),LOCATION_MZONE,LOCATION_MZONE,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,#g,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsRelateToEffect(e) then return end
	local g=Duel.GetMatchingGroup(s.desfilter,Duel.GetTurnPlayer(),LOCATION_MZONE,LOCATION_MZONE,nil)
	Duel.Destroy(g,REASON_EFFECT)
end