Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If this card is Special Summoned: You can activate this effect; treat this card as a Tuner this turn, also you can only Special Summon once from the Extra Deck for the rest of this turn. Once per turn, you can either: Target 1 face-up monster you control; equip this card to that target, OR: Unequip this card and Special Summon it. If the equipped monster would be destroyed by battle or card effect, destroy this card instead.
--チューン・ナイト
--Squeaknight
local s,id=GetID()
function s.initial_effect(c)
	--tuner
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
	e1:SetProperty(EFFECT_FLAG_DELAY)
	e1:SetOperation(s.tuneop)
	c:RegisterEffect(e1)
	--union
	aux.AddUnionProcedure(c)
end
function s.tuneop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) then
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_ADD_TYPE)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		e1:SetValue(TYPE_TUNER)
		c:RegisterEffect(e1)
	end
	local c=e:GetHandler()
	local e0=aux.createTempLizardCheck(c)
	e0:SetCondition(s.spcon)
	Duel.RegisterEffect(e0,tp)
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetProperty(EFFECT_FLAG_PLAYER_TARGET+EFFECT_FLAG_CLIENT_HINT)
	e2:SetCode(EFFECT_CANNOT_SPECIAL_SUMMON)
	e2:SetReset(RESET_PHASE|PHASE_END)
	e2:SetOwnerPlayer(tp)
	e2:SetCondition(s.spcon)
	e2:SetTargetRange(1,0)
	e2:SetTarget(aux.TargetBoolFunction(Card.IsLocation,LOCATION_EXTRA))
	Duel.RegisterEffect(e2,tp)
	--lizard check with a reset
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_CONTINUOUS+EFFECT_TYPE_FIELD)
	e3:SetCode(EVENT_SPSUMMON_SUCCESS)
	e3:SetOperation(s.checkop)
	e3:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(e3,tp)
end
function s.spcon(e)
	return Duel.GetFlagEffect(e:GetOwnerPlayer(),id)>0
end
function s.checkop(e,tp,eg,ep,ev,re,r,rp)
	if eg:IsExists(Card.IsPreviousLocation,1,nil,LOCATION_EXTRA) then
		Duel.RegisterFlagEffect(tp,id,RESET_PHASE|PHASE_END,0,1)
	end
end