Gilded Rose Kata in Golang

Given that Go does not have classes does anybody have a finished code base for the Gilded Rose Kata?

I’ve taken it to the switch statement but am not sure where to go from there.

I ask because on watching Sandi Metz do this Kata in Ruby she uses classes in the final part of the video - https://youtu.be/8bZh5LMaSmE What extra refactoring is necessary?

The rules for the refactoring kata are at https://kata-log.rocks/gilded-rose-kata and the Go start files are at https://github.com/emilybache/GildedRose-Refactoring-Kata

Thanks

`package main

type Item struct {
	name    string
	sellIn  int
	quality int
}

func UpdateQuality(items []*Item) {
	for i := 0; i < len(items); i++ {

	item := items[i]

	switch item.name {
	case "+5 Dexterity Vest", "Elixir of the Mongoose":
		Normal(item)

	case "Conjured Mana Cake":
		Conjured(item)

	case "Aged Brie":
		AgedBrie(item)

	case "Backstage passes to a TAFKAL80ETC concert":
	    	Backstage(item)

    	   default:
		break
	}
}
}

func Normal(item *Item) {
if item.sellIn > 0 {
	item.quality -= 1
}
if item.sellIn <= 0 {
	item.quality -= 2
}
item.sellIn -= 1
}
func Backstage(item *Item) {
if item.sellIn <= 5 && item.quality >= 50 {
	item.quality += 3
}
if item.sellIn <= 10 && item.quality >= 50 {
	item.quality += 2
}
item.sellIn -= 1
item.quality += 1
if item.sellIn == 0 {
	item.quality = 0
}
}


func AgedBrie(item *Item) {
item.sellIn -= 1
item.quality += 1
}

func Conjured(item *Item) {
item.quality -= 2
item.sellIn -= 1
}
`