function fuelCheck()
    local fuelLevel = turtle.getFuelLevel()
    if fuelLevel < 100 then
        turtle.select(1)
        turtle.refuel(2)
        print("Refueled.")
    end
end

function isLog()
    local success, data = turtle.inspect()
    if data.name == "minecraft:log" then
        return true
    else
        return false
    end
end

function isSap()
    local success, data = turtle.inspect()
    if data.name == "minecraft:sapling" then
        return true
    else
        return false
    end
end

 function plantTree()
    turtle.turnLeft()
    turtle.select(3)
    turtle.place()
    turtle.turnRight()
    turtle.select(1)
end

 function clean()
    turtle.suckUp()
    turtle.suck()
    turtle.turnLeft()
    turtle.suck()
    turtle.turnLeft()
    turtle.suck()
    turtle.turnLeft()
    turtle.suck()
    turtle.turnLeft()
    turtle.suck()
end

function mF()
    clean()
    turtle.forward()
end

function mB()
    clean()
    turtle.turnLeft()
    turtle.turnLeft()
    clean()
    turtle.forward()
    clean()
    turtle.turnLeft()
    turtle.turnLeft()
end

function chop()
    turtle.turnLeft()
    if isLog() then
        turtle.dig()
        turtle.select(3)
        turtle.place()
    else
        if isSap() then
        else
            turtle.select(3)
            turtle.place()
        end
    end
    clean()
    turtle.turnRight()
    clean()
end

function check()
    for i = 1, 5 do
        fuelCheck()
        for i = 1, 10 do
            mF()
        end
        turtle.turnRight()
        mF()
        turtle.turnRight()

        for i = 1, 5 do
            chop()
            mF()
            mF()
        end
        mF()
        turtle.turnLeft()
        mF()
        mF()
        turtle.turnLeft()
        mF()
    end
end

local chopping = true
while chopping do
    check()
end