--[[Stone Brick Factory program by Al Sweigart
Mines cobblestone from a generator, trutle 1 of 2]]

os.loadAPI('hare') -- load the hare module
local numToDrop
local NUM_FURNACES = 5

print('Starting mining program...')
while true do
    -- mine cobblestone
    if turtle.detect() then
        print('Cobblestone detected. Mining...')
        turtle.dig() -- Mine cobblestone
    else
        print('No cobblestone detected. Sleeping...')
        os.sleep(0.5) -- half-second pause
    end

    -- check for a full stack of cobblestone
    hare.selectItem('minecraft:cobblestone')
    if turtle.getItemCount() == 64 then
        -- check turtle's fuel
        if turtle.getFuelLevel() < (2 * NUM_FURNACES) then
            error('Turtle needs more fuel!')
        end

        -- put cobblestone in furnaces
        print('Dropping off cobblestone...')
        for furnacesToFill = NUM_FURNACES, 1, -1 do
            turtle.back() -- move over furnace
            numToDrop = math.floor(turtle.getItemCount() / furnacesToFill)
            turtle.dropDown(numToDrop) -- put cobblestone in furnace
        end

        -- move back to cobblestone generator
        for moves = 1, NUM_FURNACES do
            turtle.forward()
        end

        if turtle.getItemCount() > 0 then
            print('All furnaces full. Sleeping...')
            os.sleep(300) -- wait for five minutes
        end
    end
end