storage = peripheral.find("enderstorage:ender_chest")
if storage == nill then
    print("Pas d'ender chest")
    storage = peripheral.find("minecraft:chest")
    if storage == nill then
        print("Pas de chest")
        error("Aucun systeme de stockage trouve")
            else
                print("Chest trouve")
    end
    else
    print("Ender chest trouve")
end





monitor = peripheral.find("monitor") or error("Pas de moniteur")
monitor.clear()
monitor.setBackgroundColor(colors.black)
size = monitor.getSize()


function count(chest)
   local item
       --parcours des items du chest
   ind = 4
   for i=1, #chest.list() do
        item = chest.getItemDetail(i)
        monitor.setCursorPos(1,ind)
        itemName = item.displayName
        itemCount = item.count
        itemMax = item.maxCount
        monitor.write(itemName.." - "..itemCount.."/"..itemMax)
        ind=ind+1
        monitor.setCursorPos(1,ind)
        ind=ind+1
        percent = math.floor((itemCount/itemMax)*100).."%"
        percentLength = string.len(percent)
        --size defined on top, width of the monitor
        ratio = size/itemMax
        itemCount = itemCount*ratio
        itemMax = itemMax*ratio
        for j=1, percentLength, 1  do
            monitor.blit(string.sub(percent, j,j), "0","d")
        end
        for j=percentLength,itemCount,1 do
            monitor.blit (" ","d","d")
        end
        for j=itemCount,itemMax-1,1 do
            monitor.blit(" ","e","e")
        end
    end
end


function stored(chest)
    local cpt = 0
    for i=1, #chest.list() do
        cpt = cpt+chest.getItemDetail(i).count
    end
    return cpt
end


--refresh toutes les 5 secondes

while true do
    monitor.clear()
    monitor.setCursorPos(1,1)
    monitor.write("Chest usage percent")
    monitor.setCursorPos(1,2)
    local slots =(storage.size()*64)
    local used = (math.floor(stored(storage)))
    local percent = math.floor((used/slots)*100).."%"
    local ratio =  size/slots
    print(ratio)
    slots = slots*ratio
    used = used*ratio
    for i=1,string.len(percent) ,1 do
       monitor.blit( string.sub(percent,i,i),"0","d")
    end
    for i=string.len(percent), used,1 do
        monitor.blit(" ","d","d")
    end
    for i=used, slots, 1 do
        monitor.blit(" ","9","9")
    end

    monitor.setCursorPos(1,3)
    monitor.write("Detail")
    count(storage)
    os.sleep(5)

end