local chest = peripheral.find("minecraft:chest")
local item = chest.getItemDetail(1)
if not item then print("No item") return end

print(("%s (%s)"):format(item.displayName, item.name))
print(("Count: %d/%d"):format(item.count, item.maxCount))

for _, group in pairs(item.itemGroups) do
  print(("Group: %s"):format(group.displayName))
end

if item.damage then
  print(("Damage: %d/%d"):format(item.damage, item.maxDamage))
end