Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If this card is Normal Summoned or flipped face-up: You can Special Summon 1 Spellcaster monster with 1500 DEF from your hand or Deck in face-down Defense Position, except "Eda the Sun Magician". During your opponent's Main Phase (Quick Effect): You can change 1 face-down Spellcaster monster you control to face-up Attack or Defense Position. You can only use each effect of "Eda the Sun Magician" once per turn.
--太陽の魔術師エダ
--Eda the Sun Magician
--Scripted by AlphaKretin
local s,id=GetID()
function s.initial_effect(c)
	--Special Summon from Deck
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetProperty(EFFECT_FLAG_DELAY+EFFECT_FLAG_DAMAGE_STEP)
	e1:SetCode(EVENT_SUMMON_SUCCESS)
	e1:SetCountLimit(1,id)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EVENT_FLIP)
	c:RegisterEffect(e2)
	--Flip face-up
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_POSITION)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetHintTiming(0,TIMINGS_CHECK_MONSTER|TIMING_MAIN_END)
	e2:SetCountLimit(1,{id,1})
	e2:SetCondition(s.poscon)
	e2:SetTarget(s.postg)
	e2:SetOperation(s.posop)
	c:RegisterEffect(e2)
end
s.listed_names={id}
function s.spfilter(c,e,tp)
	return c:IsRace(RACE_SPELLCASTER) and c:IsDefense(1500) and not c:IsCode(id)
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEDOWN_DEFENSE)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_HAND|LOCATION_DECK,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND|LOCATION_DECK)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	local g=Duel.GetMatchingGroup(s.spfilter,tp,LOCATION_HAND|LOCATION_DECK,0,nil,e,tp)
	if #g>0 then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		local sg=g:Select(tp,1,1,nil)
		Duel.SpecialSummon(sg,0,tp,tp,false,false,POS_FACEDOWN_DEFENSE)
		Duel.ConfirmCards(1-tp,sg)
	end
end
function s.posfilter(c)
	return c:IsRace(RACE_SPELLCASTER) and c:IsFacedown() and c:IsDefensePos()
end
function s.poscon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsTurnPlayer(1-tp) and Duel.IsMainPhase()
end
function s.postg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.posfilter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_POSITION,nil,1,0,0)
end
function s.posop(e,tp,eg,ep,ev,re,r,rp,chk)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_POSCHANGE)
	local tc=Duel.SelectMatchingCard(tp,s.posfilter,tp,LOCATION_MZONE,0,1,1,nil):GetFirst()
	if tc then
		local pos=Duel.SelectPosition(tp,tc,POS_FACEUP_ATTACK+POS_FACEUP_DEFENSE)
		Duel.ChangePosition(tc,pos)
	end
end