--異譚の忍法帖
local s,id,o=GetID()
---@param c Card
function s.initial_effect(c)
	--set
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_GRAVE_SPSUMMON+CATEGORY_GRAVE_ACTION)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id)
	e1:SetCondition(s.setcon)
	e1:SetTarget(s.settg)
	e1:SetOperation(s.setop)
	c:RegisterEffect(e1)
	--position
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_POSITION)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCountLimit(1,id+o)
	e2:SetProperty(EFFECT_FLAG_DELAY+EFFECT_FLAG_CARD_TARGET)
	e2:SetCondition(s.condition)
	e2:SetTarget(s.target)
	e2:SetOperation(s.operation)
	c:RegisterEffect(e2)
end
function s.setcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.GetFieldGroupCount(tp,0,LOCATION_ONFIELD)>0
end
function s.filter(c,e,tp,sft)
	if c:IsType(TYPE_MONSTER) then return c:IsSetCard(0x2b) and Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEDOWN_DEFENSE)
	else return c:IsSetCard(0x61) and (c:IsType(TYPE_FIELD) or sft>0)
		and c:IsSSetable(true) and not c:IsCode(id) end
end
function s.settg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then
		local sft=Duel.GetLocationCount(tp,LOCATION_SZONE)
		if e:IsHasType(EFFECT_TYPE_ACTIVATE) and not e:GetHandler():IsLocation(LOCATION_SZONE) then sft=sft-1 end
		return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_DECK+LOCATION_GRAVE,0,1,nil,e,tp,sft)
	end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_DECK+LOCATION_GRAVE)
end
function s.gcheck(g)
	return g:FilterCount(Card.IsSetCard,nil,0x2b)<2 and g:FilterCount(Card.IsSetCard,nil,0x61)<2
		and g:GetClassCount(Card.GetLocation)==#g
end
function s.setop(e,tp,eg,ep,ev,re,r,rp)
	local mft,sft=Duel.GetLocationCount(tp,LOCATION_MZONE),Duel.GetLocationCount(tp,LOCATION_SZONE)
	if mft<=0 and sft<=0 then return end
	local g=Duel.GetMatchingGroup(aux.NecroValleyFilter(s.filter),tp,LOCATION_DECK+LOCATION_GRAVE,0,nil,e,tp,sft)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SET)
	local tg=g:SelectSubGroup(tp,s.gcheck,false,1,2)
	if not tg then return end
	local sg=tg:Filter(aux.NOT(Card.IsType),nil,TYPE_MONSTER)
	if #sg>0 then
		Duel.SSet(tp,sg)
	end
	local mg=tg:Filter(Card.IsType,nil,TYPE_MONSTER)
	if #mg>0 then
		Duel.SpecialSummon(mg,0,tp,tp,false,false,POS_FACEDOWN_DEFENSE)
		Duel.ConfirmCards(1-tp,mg)
	end
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return c:IsPreviousPosition(POS_FACEDOWN) and c:IsPreviousLocation(LOCATION_ONFIELD)
end
function s.pfilter(c)
	return c:IsFaceup() and c:IsCanTurnSet()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and s.pfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.pfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	local g=Duel.SelectTarget(tp,s.pfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_POSITION,g,1,0,0)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and tc:IsLocation(LOCATION_MZONE) and tc:IsFaceup() then
		Duel.ChangePosition(tc,POS_FACEDOWN_DEFENSE)
	end
end
