barrelMove

local barrelSide = "front"
local isBarrel = false -- Barrel placed
local updateDelay = 2 -- Time before next check

------------------------------------

function barrStats()

t = peripheral.wrap(barrelSide)

     if t ~= nil then

        isBarrel = true
        value = 0  max = 0
        ti = t.getTankInfo(barrelSide)

        if isBarrel then
            for i,j in pairs(ti) do
                for name,data in pairs(j) do
                    if name=="capacity" then
                        max = data
                    elseif name=="amount"
                        then value = data
                    end
                end
            end
        end

        s = "Barrel: "..value.."/"..max..
        print(s)

        if value == max then
            return true
        else
            return false
        end

    end

end

------------------------------------

function turtleCollect()

    turtle.select(1) -- just in case
    turtle.dig() -- grab block in front (typically barrel)

    -- turn around, move forward, and place item (barrel)
    turtle.turnRight()
    turtle.turnRight()
    turtle.forward()
    turtle.place()

    -- turn around, move forward to original position. Change
    -- back to first inventory slot, drop item (token)
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.forward()

end

------------------------------------

function barrelCheck()

    if barrStats() then
        print("Container full!")
        print("Turtle working")
        return true
    else
        print("Not full!")
        return false
    end

end

------------------------------------

function main()

    while true do

        barrelFull = barrelCheck()

        while barrelFull do

            turtleCollect()

        end -- end while

    end -- end while

end --end main()

main()