--ダーク・コンタクト
local s,id,o=GetID()
function s.initial_effect(c)
	aux.AddCodeList(c,94820406,72043279)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(s.target)
	c:RegisterEffect(e1)
end
s.fusion_effect=true
function s.filter1(c,e)
	return (c:IsLocation(LOCATION_ONFIELD+LOCATION_GRAVE) or c:IsFaceup()) and c:IsType(TYPE_MONSTER) and c:IsCanBeFusionMaterial() and c:IsAbleToDeck()
		and not c:IsImmuneToEffect(e)
end
function s.filter2(c,e,tp,m,f,chkf)
	return c:IsType(TYPE_FUSION) and c.dark_calling and (not f or f(c))
		and c:IsCanBeSpecialSummoned(e,SUMMON_VALUE_DARK_FUSION,tp,false,false) and c:CheckFusionMaterial(m,nil,chkf)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	local chkf=tp
	local mg=Duel.GetMatchingGroup(s.filter1,tp,LOCATION_ONFIELD+LOCATION_GRAVE+LOCATION_REMOVED,0,nil,e)
	local b1=Duel.GetFlagEffect(tp,id)==0 and Duel.IsExistingMatchingCard(s.filter2,tp,LOCATION_EXTRA,0,1,nil,e,tp,mg,nil,chkf)
	if Duel.GetFlagEffect(tp,id)==0 and not b1 then
		local ce=Duel.GetChainMaterial(tp)
		if ce~=nil then
			local fgroup=ce:GetTarget()
			local mg3=fgroup(ce,e,tp)
			local mf=ce:GetValue()
			b1=Duel.IsExistingMatchingCard(s.filter2,tp,LOCATION_EXTRA,0,1,nil,e,tp,mg3,mf,chkf)
		end
	end
	local b2=Duel.GetFlagEffect(tp,id+o)==0 and Duel.IsExistingMatchingCard(s.thfilter2,tp,LOCATION_DECK,0,1,nil)
	if chk==0 then return b1 or b2 end
	local op=aux.SelectFromOptions(tp,
		{b1,aux.Stringid(id,1)},
		{b2,aux.Stringid(id,2)})
	Duel.RegisterFlagEffect(tp,id+(op-1)*o,RESET_PHASE+PHASE_END,0,1)
	if op==1 then
		Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_EXTRA)
		Duel.SetOperationInfo(0,CATEGORY_TODECK,nil,1,tp,LOCATION_ONFIELD+LOCATION_GRAVE+LOCATION_REMOVED)
		e:SetCategory(CATEGORY_TODECK+CATEGORY_SPECIAL_SUMMON+CATEGORY_FUSION_SUMMON)
		e:SetOperation(s.fsop)
	elseif op==2 then
		Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
		e:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
		e:SetOperation(s.thop)
	end
end
function s.fsop(e,tp,eg,ep,ev,re,r,rp)
	local chkf=tp
	local mg=Duel.GetMatchingGroup(aux.NecroValleyFilter(s.filter1),tp,LOCATION_ONFIELD+LOCATION_GRAVE+LOCATION_REMOVED,0,nil,e)
	local sg1=Duel.GetMatchingGroup(s.filter2,tp,LOCATION_EXTRA,0,nil,e,tp,mg,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 mat=Duel.SelectFusionMaterial(tp,tc,mg,nil,chkf)
			tc:SetMaterial(mat)
			if mat:IsExists(Card.IsFacedown,1,nil) then
				local cg=mat:Filter(Card.IsFacedown,nil)
				Duel.ConfirmCards(1-tp,cg)
			end
			if mat:Filter(s.cfilter,nil):GetCount()>0 then
				local cg=mat:Filter(s.cfilter,nil)
				Duel.HintSelection(cg)
			end
			Duel.SendtoDeck(mat,nil,SEQ_DECKSHUFFLE,REASON_EFFECT+REASON_MATERIAL+REASON_FUSION)
			Duel.BreakEffect()
			Duel.SpecialSummon(tc,SUMMON_VALUE_DARK_FUSION,tp,tp,false,false,POS_FACEUP)
		elseif ce~=nil then
			local mat2=Duel.SelectFusionMaterial(tp,tc,mg3,nil,chkf)
			local fop=ce:GetOperation()
			fop(ce,e,tp,tc,mat2,SUMMON_VALUE_DARK_FUSION)
		end
		tc:CompleteProcedure()
	end
end
function s.cfilter(c)
	return c:IsLocation(LOCATION_GRAVE+LOCATION_REMOVED) or (c:IsLocation(LOCATION_MZONE) and c:IsFaceup())
end
function s.thfilter2(c)
	return c:IsCode(94820406,72043279) and c:IsAbleToHand()
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,s.thfilter2,tp,LOCATION_DECK,0,1,1,nil)
	if g:GetCount()>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end