test

-- call function(s)
input()
wrap()
send()


-- predefined variables


-- input
function input()
    print("Frequency ?")
    local event, key = os.pullEvent(key)
    local sf = key
    print("complex number ?")
    local event, key = os.pullEvent(key)
    local complexnumber = key
end

-- wrap modem and drums
function wrap()
local modem = peripheral.wrap("left")
local sides = {}
sides[1] = "front"
sides[2] = "right"
sides[3] = "back"
sides[4] = "bottom"
sides[5] = "top"
    for k,_ in pairs(sides) do
        if peripheral.isPresent(sides[k]) then
            print(peripheral.getType(sides[k])," on ",sides[k]," found")
            drum = peripheral.wrap(sides[k])
            Tankinfo = drum.getTankInfo("down")
            -- checks if there is a fluid in the drum to avoid a nil value
            if Tankinfo[1].contents then
                if peripheral.getType(sides[k]) == "drum" then
                    print(Tankinfo[1].contents.name," in drum ",sides[k])
                end
            else
                print("no fluid in drum ",sides[k])
            end
        else
            print("no item found on side ",sides[k])
        end
    end
sleep(2)
term.clear()
term.setCursorPos(1,1)
print("automation active")
end


function send()
modem.closeAll()
modem.open(sf)
local drumcounter = 0
for k,_ in pairs(sides) do
        if peripheral.isPresent(sides[k]) then
            drum = peripheral.wrap(sides[k])
            Tankinfo = drum.getTankInfo("down")
            -- checks if there is a fluid in the drum to avoid a nil value
            if peripheral.getType(sides[k]) == "drum" then
                if Tankinfo[1].contents then
                    local drumcounter = drumcounter+1
                    transmit(sf,1,complexnumber)
                    transmit(sf,1,Tankinfo[1].content.name)
                    transmit(sf,1,Tankinfo[1].content.amount)
                    print("drumcounter: ",drumcounter," nonemptydrum"")
                else
                    local drumcounter = drumcounter+1
                    transmit(sf,1,complexnumber)
                    tramsmit(sf,1,"empty")
                    transmit(sf,1,0)
                    print("drumcounter: ",drumcounter," emptydrum")
                end
            end
        end
transmit(sf,1,drumcounter)
tramsmit(sf,1,"done")
print("end send")
end
end