--マグネット・ボンディング
local s,id,o=GetID()
function s.initial_effect(c)
	aux.AddCodeList(c,44839512)
	--activate
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SEARCH+CATEGORY_TOHAND+CATEGORY_FUSION_SUMMON+CATEGORY_SPECIAL_SUMMON+CATEGORY_TODECK)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(TIMING_MAIN_END,TIMING_MAIN_END)
	e1:SetProperty(EFFECT_FLAG_FUSION_SUMMON)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.GetCurrentPhase()==PHASE_MAIN1 or Duel.GetCurrentPhase()==PHASE_MAIN2
end
function s.thfilter1(c)
	return (c:IsCode(44839512) or c:IsSetCard(0x2066) and c:IsLevelBelow(4))
		and c:IsAbleToHand()
end
function s.thfilter2(c)
	return c:IsSetCard(0xe9) and c:IsLevel(8) and c:IsAbleToHand()
end
function s.filter0(c)
	return (c:IsLocation(LOCATION_MZONE) or c:IsFaceupEx()) and c:IsRace(RACE_ROCK) and c:IsAbleToDeck()
end
function s.filter1(c,e)
	return (c:IsLocation(LOCATION_MZONE) or c:IsFaceupEx()) and c:IsRace(RACE_ROCK)
		and not c:IsImmuneToEffect(e) and c:IsAbleToDeck()
end
function s.filter2(c,e,tp,m,f,chkf)
	return c:IsType(TYPE_FUSION) and c:IsRace(RACE_ROCK) 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.target(e,tp,eg,ep,ev,re,r,rp,chk)
	local b1=Duel.IsExistingMatchingCard(s.thfilter1,tp,LOCATION_DECK,0,1,nil)
		and (not e:IsCostChecked() or Duel.GetFlagEffect(tp,id)==0)
	local b2=Duel.IsExistingMatchingCard(s.thfilter2,tp,LOCATION_DECK,0,1,nil)
		and (not e:IsCostChecked() or Duel.GetFlagEffect(tp,id+o)==0)
	local b3=false
	local chkf=tp
	local mg1=Duel.GetMatchingGroup(s.filter0,tp,LOCATION_HAND+LOCATION_MZONE+LOCATION_GRAVE+LOCATION_REMOVED,0,nil)
	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 mg2=fgroup(ce,e,tp)
			local mf=ce:GetValue()
			res=Duel.IsExistingMatchingCard(s.filter2,tp,LOCATION_EXTRA,0,1,nil,e,tp,mg2,mf,chkf)
		end
		b3=res and (not e:IsCostChecked() or Duel.GetFlagEffect(tp,id+o*2)==0)
	end
	if chk==0 then return b1 or b2 or b3 end
	local op=0
	if b1 or b2 or b3 then
		op=aux.SelectFromOptions(tp,
			{b1,aux.Stringid(id,0),1},
			{b1,aux.Stringid(id,1),2},
			{b2,aux.Stringid(id,2),3})
	end
	e:SetLabel(op)
	if op==1 or op==2 then
		if e:IsCostChecked() then
			e:SetCategory(CATEGORY_SEARCH+CATEGORY_TOHAND)
			Duel.RegisterFlagEffect(tp,id+(op-1)*o,RESET_PHASE+PHASE_END,0,1)
		end
		Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
	elseif op==3 then
		if e:IsCostChecked() then
			e:SetCategory(CATEGORY_FUSION_SUMMON+CATEGORY_SPECIAL_SUMMON+CATEGORY_TODECK)
			Duel.RegisterFlagEffect(tp,id+o*2,RESET_PHASE+PHASE_END,0,1)
		end
		Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_EXTRA)
		Duel.SetOperationInfo(0,CATEGORY_TODECK,nil,1,tp,LOCATION_HAND+LOCATION_MZONE+LOCATION_GRAVE+LOCATION_REMOVED)
	end
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	if e:GetLabel()==1 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
		local g=Duel.SelectMatchingCard(tp,s.thfilter1,tp,LOCATION_DECK,0,1,1,nil)
		if g:GetCount()>0 then
			Duel.SendtoHand(g,nil,REASON_EFFECT)
			Duel.ConfirmCards(1-tp,g)
		end
	elseif e:GetLabel()==2 then
		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
	elseif e:GetLabel()==3 then
		local chkf=tp
		local mg1=Duel.GetMatchingGroup(aux.NecroValleyFilter(s.filter1),tp,LOCATION_HAND+LOCATION_MZONE+LOCATION_GRAVE+LOCATION_REMOVED,0,nil,e)
		local sg1=Duel.GetMatchingGroup(s.filter2,tp,LOCATION_EXTRA,0,nil,e,tp,mg1,nil,chkf)
		local mg2=nil
		local sg2=nil
		local ce=Duel.GetChainMaterial(tp)
		if ce~=nil then
			local fgroup=ce:GetTarget()
			mg2=fgroup(ce,e,tp)
			local mf=ce:GetValue()
			sg2=Duel.GetMatchingGroup(s.filter2,tp,LOCATION_EXTRA,0,nil,e,tp,mg2,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 not Duel.SelectYesNo(tp,ce:GetDescription())) then
				local mat1=Duel.SelectFusionMaterial(tp,tc,mg1,nil,chkf)
				tc:SetMaterial(mat1)
				Duel.HintSelection(mat1)
				Duel.SendtoDeck(mat1,nil,SEQ_DECKSHUFFLE,REASON_EFFECT+REASON_MATERIAL+REASON_FUSION)
				Duel.BreakEffect()
				Duel.SpecialSummon(tc,SUMMON_TYPE_FUSION,tp,tp,false,false,POS_FACEUP)
			else
				local mat2=Duel.SelectFusionMaterial(tp,tc,mg2,nil,chkf)
				local fop=ce:GetOperation()
				fop(ce,e,tp,tc,mat2)
			end
		end
	end
end