CC BlockMiner

--ComputerCraft BlockMiner by Teki

local details
local blockDetected, blockDetails

local function getfirstFreeSlot(bDetails)
    for i =1,16 do
        details = turtle.getItemDetail(i)
        if details ~= nil and turtle.getItemSpace(i) >= 1 and details.name == bDetails.name then
            return i
        end
    end
    for i =1,16 do
        details = turtle.getItemDetail(i)
        if details == nil then
            return i
        end
    end
    return 0
end

while true do
    blockDetected, blockDetails = turtle.inspect()
    firstFreeSlot = getfirstFreeSlot(blockDetails)
    if firstFreeSlot ~= 0 then
        turtle.select(firstFreeSlot)
        if blockDetails.name == "minecraft:flowing_lava" then
            redstone.setOutput("top", true)
        else
            redstone.setOutput("top", false)
            if turtle.detect() then
                turtle.dig()
            end
        end
    end
    sleep(0)
end