Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When this card destroys a monster by battle and sends it to the Graveyard, inflict 300 damage to your opponent. Once per turn, you can Special Summon 1 Level 4 or lower "Iron Chain" monster from your Graveyard, except "Iron Chain Repairman". This card cannot attack the turn you activate this effect.
--Ｃ・リペアラー
--Iron Chain Repairman
local s,id=GetID()
function s.initial_effect(c)
	--When this card destroys a monster by battle, inflict 300 damage
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DAMAGE)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetType(EFFECT_TYPE_TRIGGER_F+EFFECT_TYPE_SINGLE)
	e1:SetCode(EVENT_BATTLE_DESTROYING)
	e1:SetCondition(s.damcon)
	e1:SetTarget(s.damtg)
	e1:SetOperation(s.damop)
	c:RegisterEffect(e1)
	--Special summon 1 level 4 or lower "Iron Chain" monster from GY
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1)
	e2:SetCost(s.spcost)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_IRON_CHAIN}
s.listed_names={id}
function s.damcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local bc=c:GetBattleTarget()
	return c:IsRelateToBattle() and c:IsFaceup() and bc:IsLocation(LOCATION_GRAVE)
		and bc:IsReason(REASON_BATTLE) and bc:IsMonster()
end
function s.damtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetTargetPlayer(1-tp)
	Duel.SetTargetParam(300)
	Duel.SetOperationInfo(0,CATEGORY_DAMAGE,nil,0,1-tp,300)
end
function s.damop(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Damage(p,d,REASON_EFFECT)
end
function s.spcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():GetAttackAnnouncedCount()==0 end
	--Cannot attack
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetDescription(3206)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_CANNOT_ATTACK)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_OATH+EFFECT_FLAG_CLIENT_HINT)
	e1:SetReset(RESETS_STANDARD_PHASE_END)
	e:GetHandler():RegisterEffect(e1)
end
function s.spfilter(c,e,tp)
	return c:IsLevelBelow(4) and c:IsSetCard(SET_IRON_CHAIN) and c:GetCode()~=id and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.spfilter(chkc,e,tp) end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingTarget(s.spfilter,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectTarget(tp,s.spfilter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,1,0,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEUP)
	end
end