Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Destroy as many "Dark Contract" cards in your Spell & Trap Zone as possible, and if you do, draw the same number of cards you destroyed, then gain 1000 LP for each card you drew with this effect.
--契約洗浄
--Contract Laundering
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DESTROY+CATEGORY_DRAW+CATEGORY_RECOVER)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_series={SET_DARK_CONTRACT}
function s.filter(c)
	return c:IsFaceup() and c:IsSetCard(SET_DARK_CONTRACT) and c:GetSequence()<5
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp)
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_SZONE,0,1,nil) end
	local g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_SZONE,0,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,#g,0,0)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,#g)
	Duel.SetOperationInfo(0,CATEGORY_RECOVER,nil,0,tp,#g*1000)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_SZONE,0,nil)
	local ct1=Duel.Destroy(g,REASON_EFFECT)
	if ct1==0 then return end
	local ct2=Duel.Draw(tp,ct1,REASON_EFFECT)
	Duel.BreakEffect()
	Duel.Recover(tp,ct2*1000,REASON_EFFECT)
end