Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
You can target 1 "Superheavy Samurai" monster you control; equip this monster from your hand or your side of the field to that target. Its Level becomes 5. During either player's turn: You can discard this card, then target 1 Defense Position "Superheavy Samurai" monster you control; until the end of this turn, it loses 800 DEF, but cannot be destroyed by battle or by card effects.
--超重武者装留ファイヤー・アーマー
--Superheavy Samurai Soulfire Suit
local s,id=GetID()
function s.initial_effect(c)
	--Equip this monster to 1 "Superheavy Samurai" monster you control
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_EQUIP)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetRange(LOCATION_HAND|LOCATION_MZONE)
	e1:SetTarget(s.eqtg)
	e1:SetOperation(s.eqop)
	c:RegisterEffect(e1)
	--Targeted "Superheavy Samurai" monster loses 800 DEF, also cannot be destroyed by battle or card effects
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_DEFCHANGE)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetRange(LOCATION_HAND)
	e2:SetHintTiming(TIMING_DAMAGE_STEP)
	e2:SetCondition(function() return not (Duel.IsPhase(PHASE_DAMAGE) and Duel.IsDamageCalculated()) end)
	e2:SetCost(Cost.SelfDiscard)
	e2:SetTarget(s.deftg)
	e2:SetOperation(s.defop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_SUPERHEAVY_SAMURAI}
function s.eqtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	local c=e:GetHandler()
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and chkc:IsSetCard(SET_SUPERHEAVY_SAMURAI) and chkc:IsFaceup() and chkc~=c end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_SZONE)>0
		and Duel.IsExistingTarget(aux.FaceupFilter(Card.IsSetCard,SET_SUPERHEAVY_SAMURAI),tp,LOCATION_MZONE,0,1,c) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_EQUIP)
	Duel.SelectTarget(tp,aux.FaceupFilter(Card.IsSetCard,SET_SUPERHEAVY_SAMURAI),tp,LOCATION_MZONE,0,1,1,c)
	Duel.SetOperationInfo(0,CATEGORY_EQUIP,c,1,tp,0)
end
function s.eqop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) then return end
	local tc=Duel.GetFirstTarget()
	if Duel.GetLocationCount(tp,LOCATION_SZONE)>0 and tc:IsRelateToEffect(e) and tc:IsFaceup()
		and tc:IsControler(tp) and Duel.Equip(tp,c,tc) then
		--Equip limit
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_EQUIP_LIMIT)
		e1:SetValue(function(e,c) return c:IsSetCard(SET_SUPERHEAVY_SAMURAI) end)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		c:RegisterEffect(e1)
		--Its Level becomes 5
		local e2=Effect.CreateEffect(c)
		e2:SetType(EFFECT_TYPE_EQUIP)
		e2:SetCode(EFFECT_CHANGE_LEVEL)
		e2:SetValue(5)
		e2:SetReset(RESET_EVENT|RESETS_STANDARD)
		c:RegisterEffect(e2)
	else
		Duel.SendtoGrave(c,REASON_RULE)
	end
end
function s.deffilter(c)
	return c:IsPosition(POS_FACEUP_DEFENSE) and c:IsSetCard(SET_SUPERHEAVY_SAMURAI)
end
function s.deftg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and s.deffilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.deffilter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATKDEF)
	Duel.SelectTarget(tp,s.deffilter,tp,LOCATION_MZONE,0,1,1,nil)
end
function s.defop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and tc:IsFaceup() then
		--It loses 800 DEF
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_DEFENSE)
		e1:SetValue(-800)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e1)
		--Cannot be destroyed by battle or card effects
		local e2=e1:Clone()
		e2:SetDescription(3008)
		e2:SetProperty(EFFECT_FLAG_CLIENT_HINT)
		e2:SetCode(EFFECT_INDESTRUCTABLE_BATTLE)
		e2:SetValue(1)
		tc:RegisterEffect(e2)
		local e3=e2:Clone()
		e3:SetCode(EFFECT_INDESTRUCTABLE_EFFECT)
		tc:RegisterEffect(e3)
	end
end