Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Destroy all tokens on the field. Increase your Life Points by the number of tokens destroyed x 800 points.
--トークン収穫祭
--Token Thanksgiving
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DESTROY+CATEGORY_RECOVER)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsType,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil,TYPE_TOKEN) end
	local g=Duel.GetMatchingGroup(Card.IsType,tp,LOCATION_MZONE,LOCATION_MZONE,nil,TYPE_TOKEN)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,#g,0,0)
	Duel.SetOperationInfo(0,CATEGORY_RECOVER,nil,0,tp,#g*800)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(Card.IsType,tp,LOCATION_MZONE,LOCATION_MZONE,nil,TYPE_TOKEN)
	local ct=Duel.Destroy(g,REASON_EFFECT)
	Duel.Recover(tp,ct*800,REASON_EFFECT)
end