--見えざる幽獄
local s,id,o=GetID()
function s.initial_effect(c)
	--activate
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SPECIAL_SUMMON+CATEGORY_FUSION_SUMMON+CATEGORY_REMOVE)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetProperty(EFFECT_FLAG_FUSION_SUMMON|EFFECT_FLAG_CARD_TARGET)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.cfilter(c)
	return c:IsType(TYPE_SPELL+TYPE_TRAP) and c:IsAbleToHand()
end
function s.filter1(c,e)
	return c:IsOnField() and c:IsAbleToRemove() and not c:IsImmuneToEffect(e)
end
function s.filter2(c,e,tp,m,f,chkf)
	return c:IsType(TYPE_FUSION) and c:IsSetCard(0x2d4) and (not f or f(c))
		and c:IsCanBeSpecialSummoned(e,SUMMON_TYPE_FUSION,tp,false,false) and c:CheckFusionMaterial(m,nil,chkf)
end
function s.filter3(c)
	return c:IsType(TYPE_MONSTER) and c:IsCanBeFusionMaterial() and c:IsAbleToRemove()
end
function s.ffilter(e,c)
	return c:IsFaceup() and c:GetOwner()==1-e:GetHandlerPlayer()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	local b1=Duel.IsExistingTarget(s.cfilter,tp,0,LOCATION_ONFIELD,1,nil)
		and (not e:IsCostChecked()
		or Duel.GetFlagEffect(tp,id)==0
			and Duel.IsExistingMatchingCard(aux.AND(Card.IsFaceup,Card.IsSetCard),tp,LOCATION_MZONE,0,1,nil,0x2d4))
	local chkf=tp
	local mg1=Duel.GetFusionMaterial(tp):Filter(s.filter1,nil,e)
	local mg2=Duel.GetMatchingGroup(s.filter3,tp,LOCATION_GRAVE,0,nil)
	mg1:Merge(mg2)
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_ADD_FUSION_SETCODE)
	e1:SetTargetRange(LOCATION_MZONE,0)
	e1:SetTarget(s.ffilter)
	e1:SetValue(0x2d4)
	Duel.RegisterEffect(e1,tp)
	local res=Duel.IsExistingMatchingCard(s.filter2,tp,LOCATION_EXTRA,0,1,nil,e,tp,mg1,nil,chkf)
	if not res then
		local ce=Duel.GetChainMaterial(tp)
		if ce~=nil then
			local fgroup=ce:GetTarget()
			local mg3=fgroup(ce,e,tp)
			local mf=ce:GetValue()
			res=Duel.IsExistingMatchingCard(s.filter2,tp,LOCATION_EXTRA,0,1,nil,e,tp,mg3,mf,chkf)
		end
	end
	local b2=res
		and (not e:IsCostChecked()
		or Duel.GetFlagEffect(tp,id+o)==0)
	e1:Reset()
	if chk==0 then return b1 or b2 end
	local op=0
	if b1 or b2 then
		op=aux.SelectFromOptions(tp,
			{b1,aux.Stringid(id,1),1},
			{b2,aux.Stringid(id,2),2})
	end
	e:SetLabel(op)
	if op==1 then
		if e:IsCostChecked() then
			e:SetCategory(CATEGORY_TOHAND)
			e:SetProperty(EFFECT_FLAG_FUSION_SUMMON|EFFECT_FLAG_CARD_TARGET)
			Duel.RegisterFlagEffect(tp,id,RESET_PHASE+PHASE_END,0,1)
		end
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_RTOHAND)
		local g=Duel.SelectTarget(tp,s.cfilter,tp,0,LOCATION_ONFIELD,1,1,nil)
		Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,1,0,0)
	elseif op==2 then
		if e:IsCostChecked() then
			e:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_FUSION_SUMMON+CATEGORY_REMOVE)
			e:SetProperty(EFFECT_FLAG_FUSION_SUMMON)
			Duel.RegisterFlagEffect(tp,id+o,RESET_PHASE+PHASE_END,0,1)
		end
		Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_EXTRA)
		Duel.SetOperationInfo(0,CATEGORY_REMOVE,nil,1,tp,LOCATION_ONFIELD+LOCATION_GRAVE)
	end
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	if e:GetLabel()==1 then
		local tc=Duel.GetFirstTarget()
		if tc:IsRelateToChain() then
			Duel.SendtoHand(tc,nil,REASON_EFFECT)
		end
	elseif e:GetLabel()==2 then
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_FIELD)
		e1:SetCode(EFFECT_ADD_FUSION_SETCODE)
		e1:SetTargetRange(LOCATION_MZONE,0)
		e1:SetTarget(s.ffilter)
		e1:SetValue(0x2d4)
		Duel.RegisterEffect(e1,tp)
		local chkf=tp
		local mg1=Duel.GetFusionMaterial(tp):Filter(s.filter1,nil,e)
		local mg2=Duel.GetMatchingGroup(s.filter3,tp,LOCATION_GRAVE,0,nil)
		mg1:Merge(mg2)
		local sg1=Duel.GetMatchingGroup(s.filter2,tp,LOCATION_EXTRA,0,nil,e,tp,mg1,nil,chkf)
		local mg3=nil
		local sg2=nil
		local ce=Duel.GetChainMaterial(tp)
		if ce~=nil then
			local fgroup=ce:GetTarget()
			mg3=fgroup(ce,e,tp)
			local mf=ce:GetValue()
			sg2=Duel.GetMatchingGroup(s.filter2,tp,LOCATION_EXTRA,0,nil,e,tp,mg3,mf,chkf)
		end
		if sg1:GetCount()>0 or (sg2~=nil and sg2:GetCount()>0) then
			local sg=sg1:Clone()
			if sg2 then sg:Merge(sg2) end
			Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
			local tg=sg:Select(tp,1,1,nil)
			local tc=tg:GetFirst()
			if sg1:IsContains(tc) and (sg2==nil or not sg2:IsContains(tc) or ce and not Duel.SelectYesNo(tp,ce:GetDescription())) then
				local mat1=Duel.SelectFusionMaterial(tp,tc,mg1,nil,chkf)
				tc:SetMaterial(mat1)
				Duel.Remove(mat1,POS_FACEUP,REASON_EFFECT+REASON_MATERIAL+REASON_FUSION)
				Duel.BreakEffect()
				Duel.SpecialSummon(tc,SUMMON_TYPE_FUSION,tp,tp,false,false,POS_FACEUP)
			elseif ce then
				local mat2=Duel.SelectFusionMaterial(tp,tc,mg3,nil,chkf)
				local fop=ce:GetOperation()
				fop(ce,e,tp,tc,mat2)
			end
			tc:CompleteProcedure()
		end
		e1:Reset()
	end
end
