tFarm

print("Epic tree farm")

function tree()
    turtle.select(1)
    turtle.dig()
    turtle.forward()
    turtle.digDown()
    while turtle.detectUp() do
        turtle.digUp()
        turtle.up()
    end
    while true do
        local success, data = turtle.inspectDown()
        if success then
            if data.name == "minecraft:dirt" then
                break
            else
                turtle.digDown()
                turtle.down()
            end
        else
            turtle.digDown()
            turtle.down()
        end
    end
    turtle.up()
end

function plant()
    for i=1,16,1 do
        turtle.select(i)
        local data = turtle.getItemDetail(i)
        if data then
            if data.name == "plants2:sapling_0" then
                turtle.placeDown()
                break
            end
        end
    end
end

function round()
    while true do
        local success, data = turtle.inspect()
        if success then
            if data.name == "plants2:log_0" then
                tree()
            elseif data.name == "minecraft:stone" then
                turtle.turnLeft()
                turtle.forward()
                turtle.forward()
                turtle.turnLeft()
            elseif data.name == "minecraft:stonebrick" then
                turtle.turnLeft()
                turtle.forward()
                turtle.forward()
                turtle.turnRight()
                turtle.forward()
                turtle.forward()
                turtle.turnLeft()
                turtle.turnLeft()
                return
            else
                print("Unrecognised block: ", data.name)
            end
        end
        plant()
        turtle.forward()
    end
end

function empty()
    for i=1,16,1 do
        turtle.select(i)
        local data = turtle.getItemDetail(i)
        if data then
            if data.name == "plants2:sapling_0" then
                turtle.turnLeft()
                turtle.drop(64)
                turtle.turnRight()
            elseif data.name == "plants2:log_0" then
                turtle.dropDown(64)
            else
                print("Unrecognised item in the bagging area: ", data.name)
            end
        end
    end
end

function fuel()
    while turtle.getFuelLevel() < 1000 do
        print("Need fuel")
        turtle.turnRight()
        turtle.suck(64)
        for i=1,16,1 do
            turtle.select(i)
            turtle.refuel(64)
        end
        turtle.turnLeft()
    end
end

function saplings()
    turtle.select(1)
    turtle.turnLeft()
    turtle.suck(64)
    turtle.turnRight()
end

fuel()
saplings()
round()
empty()