Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
This card must attack if able. When this face-up Attack Position card is selected as an attack target, change it to Defense Position. When this card is Normal or Special Summoned, select 1 monster on the field, and change its battle position.
--カラクリ参謀 弐四八
--Karakuri Strategist mdl 248 "Nishipachi"
local s,id=GetID()
function s.initial_effect(c)
	--must attack
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_MUST_ATTACK)
	c:RegisterEffect(e1)
	--to defense
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,0))
	e3:SetCategory(CATEGORY_POSITION)
	e3:SetType(EFFECT_TYPE_TRIGGER_F+EFFECT_TYPE_SINGLE)
	e3:SetCode(EVENT_BE_BATTLE_TARGET)
	e3:SetCondition(s.poscon)
	e3:SetOperation(s.posop)
	c:RegisterEffect(e3)
	--pos
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,1))
	e4:SetCategory(CATEGORY_POSITION)
	e4:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e4:SetType(EFFECT_TYPE_TRIGGER_F+EFFECT_TYPE_SINGLE)
	e4:SetCode(EVENT_SUMMON_SUCCESS)
	e4:SetTarget(s.tg)
	e4:SetOperation(s.op)
	c:RegisterEffect(e4)
	local e5=e4:Clone()
	e5:SetCode(EVENT_SPSUMMON_SUCCESS)
	c:RegisterEffect(e5)
end
function s.poscon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsAttackPos()
end
function s.posop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsFaceup() and c:IsRelateToEffect(e) then
		Duel.ChangePosition(c,POS_FACEUP_DEFENSE)
	end
end
function s.filter(c)
	return c:IsCanChangePosition()
end
function s.tg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and s.filter(chkc) end
	if chk==0 then return true end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_POSCHANGE)
	local g=Duel.SelectTarget(tp,s.filter,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_POSITION,g,1,0,0)
end
function s.op(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) then
		Duel.ChangePosition(tc,POS_FACEUP_DEFENSE,POS_FACEUP_ATTACK,POS_FACEUP_ATTACK,POS_FACEUP_ATTACK)
	end
end