local tree = 0

while turtle.detectDown or not turtle.detectDown do

    if redstone.getInput("left", true) then
        tree = tree + 1

        print( "Tree Detected Starting Logging Sequence" )
        print( "This is tree number: "..tree )

        turtle.turnLeft()
        turtle.dig()
        turtle.forward()

        while turtle.detectUp() do
            turtle.digUp()
            turtle.up()
        end

        while not turtle.detectUp() and not turtle.detectDown() do
            turtle.down()
        end

        turtle.back()

        print( "Replanting Sapling" )
        turtle.select(1)
        turtle.place(1)
        turtle.turnRight()
    end

    if redstone.getInput("right", true) then
        tree = tree + 1

        print( "Tree Detected Starting Logging Sequence" )
        print( "This is tree number: "..tree )

        turtle.turnRight()
        turtle.dig()
        turtle.forward()

        while turtle.detectUp() do
            turtle.digUp()
            turtle.up()
        end

        while not turtle.detectUp() and not turtle.detectDown() do
            turtle.down()
        end

        turtle.back()

        print( "Replanting Sapling" )
        turtle.select(1)
        turtle.place(1)
        turtle.turnLeft()
    end

    if turtle.detect() and not turtle.detectDown() then

        if turtle.getItemSpace(2) == 0 then

            while turtle.detectUp() do
                turtle.digUp()
            end
            turtle.up()

            while turtle.detect() do
                turtle.dig()
            end
            turtle.forward()

            while turtle.detect() do
                turtle.dig()
            end
            turtle.forward()

            turtle.select(2)
            turtle.drop()

            if turtle.getItemSpace(3) < 64 then
                turtle.select(3)
                turtle.drop()
            end

            turtle.back()
            turtle.back()
            turtle.down()
        end

        turtle.turnRight()
        turtle.turnRight()
    end

    if turtle.detect() then
        turtle.turnRight()
    end

    if not turtle.detect() then
        turtle.forward()
    end
end