test

-- Constants
local START_X, START_Y, START_Z = 0, 0, 0  -- Change to your start point
local MAX_INVENTORY_SIZE = 16  -- Assuming a regular turtle inventory

-- Function to refuel the turtle with coal if fuel is low
function refuelIfNeeded()
    if turtle.getFuelLevel() < 100 then  -- Change 100 to your desired threshold
        local success, data = turtle.inspectUp()
        if success and data.name == "minecraft:coal_ore" then
            turtle.digUp()
            turtle.select(1)  -- Assuming coal is in the first slot
            turtle.placeUp()
            turtle.select(2)  -- Assuming a new slot for mining
            turtle.refuel()
            turtle.select(1)  -- Return to the coal slot
        else
            print("No coal found for refueling.")
        end
    end
end

-- Function to mine a layer of blocks
function mineLayer()
    for i = 1, 16 do
        while turtle.detect() do
            turtle.dig()
        end
        turtle.forward()
    end
end

-- Main program
while true do
    -- Display a setup terminal and prepare resources (add your code here)
    -- Choose ore to mine and block to drop (add your code here)

    -- Check if fuel is low and refuel
    refuelIfNeeded()

    -- Mine a layer of blocks, avoiding bedrock
    while true do
        mineLayer()
        if turtle.detectDown() then
            break  -- Exit the loop when bedrock is reached
        else
            turtle.down()
        end
    end

    -- Return to the starting point
    turtle.up()
    while turtle.getY() > START_Y do
        turtle.up()
    end
    while turtle.getX() < START_X do
        turtle.forward()
    end
    while turtle.getX() > START_X do
        turtle.back()
    end
    while turtle.getZ() < START_Z do
        turtle.forward()
    end
    while turtle.getZ() > START_Z do
        turtle.back()
    end

    -- Check if the inventory is full and idle at the starting point
    if turtle.getItemCount() == MAX_INVENTORY_SIZE then
        print("Inventory is full. Returning to start point.")
        turtle.turnLeft()
        turtle.turnLeft()
        while turtle.getItemCount() > 0 do
            turtle.drop()
        end
        os.sleep(60)  -- Idle for 60 seconds before resuming
    end
end