Potoato Farm

function checkFuel()
    print("Checking fuel")
    fuellevel = turtle.getFuelLevel()
    print(fuellevel)
    if (fuellevel <= 80) then
        if (getItemIndex("minecraft:bamboo")) then
            turtle.select(getItemIndex("minecraft:bamboo"))
            turtle.refuel()
            turtle.select(getItemIndex("minecraft:potato"))
            turtle.turnLeft()
        end
    end
end
function getItemIndex(itemName)
    for slot = 1, 16, 1 do
        local item = turtle.getItemDetail(slot)
        if (item ~= nil) then
            if (item["name"] == itemName) then
                return slot
            end
        end
    end
end

function checkLeft()
    turtle.turnLeft()
    if (turtle.detect()) then
        return true
    end
    turtle.forward()
    turtle.turnRight()
    return false
end

function start()
    isBlock, data = turtle.inspect()
    if (data['name'] == "minecraft:potatoe") then
        return "done"
    else
        if (data['name'] == "minecraft:bamboo" or data["name"] == "minecraft:bamboo_sprout") then
            turtle.turnRight()
            turtle.turnRight()
            return "done"
        else
            turtle.turnLeft()
            start()
        end
    end
end

function succ()
    for i = 1, 6, 1 do
        turtle.suck()
    end
end

function getBamboo()
    turtle.turnRight()
    turtle.turnRight()
    isBlock, data = turtle.inspect()

    if (isBlock) then
        if (data['state']['age'] == 7) then
            turtle.dig()
            succ()
            bambooIndex = getItemIndex("minecraft:bamboo")
            turtle.select(bambooIndex)
            turtle.place()
            turtle.turnRight()
            turtle.turnRight()
        end
    else
        succ()
        potatoIndex = getItemIndex("minecraft:potato")
        turtle.place()
    end
end

start()
while (1) do
    isBlock, data = turtle.inspect()

    if (isBlock) then
        if (data['state']['age'] == 7) then
            turtle.dig()
            succ()
            potatoIndex = getItemIndex("minecraft:potato")
            turtle.select(potatoIndex)
            turtle.place()
            turtle.dropDown(turtle.getItemCount(potatoIndex) - 1)
            getBamboo()
        end
    else
        succ()
        potatoIndex = getItemIndex("minecraft:potato")
        turtle.place()
    end

    if (checkLeft()) then
        checkFuel()
        level = turtle.getFuelLevel()
        turtle.suckDown()
        turtle.turnRight()
        turtle.turnRight()
        while (not turtle.detect()) do
            turtle.forward()
        end
        turtle.turnLeft()
    end
end