Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If you control a face-up Tuner monster, this card cannot be destroyed by battle. When a face-up Tuner monster(s) you control is removed from the field, gain 800 Life Points.
--ブラックポータン
--Black Potan
local s,id=GetID()
function s.initial_effect(c)
	--If you control a Tuner this card cannot be destroyed by battle
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_INDESTRUCTABLE_BATTLE)
	e1:SetCondition(function(e) return Duel.IsExistingMatchingCard(aux.FaceupFilter(Card.IsType,TYPE_TUNER),e:GetHandlerPlayer(),LOCATION_MZONE,0,1,nil) end)
	e1:SetValue(1)
	c:RegisterEffect(e1)
	--Gain 800 LP
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_RECOVER)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e2:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e2:SetCode(EVENT_LEAVE_FIELD)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCondition(s.lpcon)
	e2:SetTarget(s.lptg)
	e2:SetOperation(s.lpop)
	c:RegisterEffect(e2)
end
function s.lpconfilter(c,tp)
	return c:IsPreviousTypeOnField(TYPE_TUNER) and c:IsPreviousPosition(POS_FACEUP) and c:IsPreviousControler(tp)
		and c:IsPreviousLocation(LOCATION_MZONE)
end
function s.lpcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.lpconfilter,1,nil,tp)
end
function s.lptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(800)
	Duel.SetOperationInfo(0,CATEGORY_RECOVER,nil,0,tp,800)
end
function s.lpop(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	Duel.Recover(p,d,REASON_EFFECT)
end