Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Apply 1 of these effects, or if you control 2 or more "Six Samurai" monsters, you can apply both effects in sequence. ● Special Summon 1 "Six Samurai" monster with 2000 or less ATK from your hand or GY. ● Change 1 monster your opponent controls with 2000 or less ATK to face-down Defense Position. During your Main Phase: You can banish this card from your GY, then target 1 "Six Samurai" monster in your GY; add it to your hand. You can only use 1 "Six Strike - Double Assault" effect per turn, and only once that turn.
--六武式襲双陣
--Six Strike - Double Assault
--scripted by Naim
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_POSITION)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(0,TIMING_MAIN_END|TIMINGS_CHECK_MONSTER_E)
	e1:SetCountLimit(1,id)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
	--Add 1 "Six Samurai" monster from your GY to the hand
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_TOHAND)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCountLimit(1,id)
	e2:SetCost(Cost.SelfBanish)
	e2:SetTarget(s.thtg)
	e2:SetOperation(s.thop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_SIX_SAMURAI}
function s.spfilter(c,e,tp)
	return c:IsSetCard(SET_SIX_SAMURAI) and c:IsAttackBelow(2000) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.posfilter(c)
	return c:IsAttackBelow(2000) and c:IsCanTurnSet()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then
		local b1=Duel.GetLocationCount(tp,LOCATION_MZONE)>0
			and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_HAND|LOCATION_GRAVE,0,1,nil,e,tp)
		local b2=Duel.IsExistingMatchingCard(s.posfilter,tp,0,LOCATION_MZONE,1,nil)
		return b1 or b2
	end
	Duel.SetPossibleOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND|LOCATION_GRAVE)
	Duel.SetPossibleOperationInfo(0,CATEGORY_POSITION,nil,1,1-tp,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local b1=Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(aux.NecroValleyFilter(s.spfilter),tp,LOCATION_HAND|LOCATION_GRAVE,0,1,nil,e,tp)
	local b2=Duel.IsExistingMatchingCard(s.posfilter,tp,0,LOCATION_MZONE,1,nil)
	if not (b1 or b2) then return end
	local both=b1 and b2 and Duel.IsExistingMatchingCard(aux.FaceupFilter(Card.IsSetCard,SET_SIX_SAMURAI),tp,LOCATION_MZONE,0,2,nil)
	local op=Duel.SelectEffect(tp,
			{b1,aux.Stringid(id,2)},
			{b2,aux.Stringid(id,3)},
			{both,aux.Stringid(id,4)})
	local break_chk=false
	if op&1>0 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		local sg=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.spfilter),tp,LOCATION_HAND|LOCATION_GRAVE,0,1,1,nil,e,tp)
		if #sg>0 then
			Duel.SpecialSummon(sg,0,tp,tp,false,false,POS_FACEUP)
		end
		break_chk=true
	end
	if op&2>0 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_POSCHANGE)
		local pg=Duel.SelectMatchingCard(tp,s.posfilter,tp,0,LOCATION_MZONE,1,1,nil)
		if #pg>0 then
			Duel.HintSelection(pg)
			if break_chk then Duel.BreakEffect() end
			Duel.ChangePosition(pg,POS_FACEDOWN_DEFENSE)
		end
	end
end
function s.thfilter(c)
	return c:IsSetCard(SET_SIX_SAMURAI) and c:IsMonster() and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(tp) and chkc:IsLocation(LOCATION_GRAVE) and s.thfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.thfilter,tp,LOCATION_GRAVE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectTarget(tp,s.thfilter,tp,LOCATION_GRAVE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,1,tp,0)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SendtoHand(tc,nil,REASON_EFFECT)
	end
end