local w, h = term.getSize()

-- Function to center text horizontally
local function centerText(y, text)
    local x = math.floor((w - #text) / 2)
    term.setCursorPos(x, y)
    term.write(text)
end

-- ASCII art dog image
local dogImage = {
    "     |\\_/|                  ",
    "     | @ @   Doggy OS        ",
    "     |   <>              _   ",
    "     |  _/\\------____ ((| |))",
    "     |               `--' |  ",
    " _____|_       ___|   |___.' ",
    "/_/_____/____/_______|       "
}

-- Function to draw the ASCII art
local function drawASCIIArt(y, textColor)
    term.setTextColor(textColor)
    for i, line in ipairs(dogImage) do
        centerText(y + i - 1, line)
    end
end

-- Function to display the "Insert bootable medium" message
local function insertBootableMediumMessage()
    local message = "Insert bootable medium"
    local messageY = h - 5  -- Move the message higher (adjusted position)

    while true do
        term.setBackgroundColor(colors.black)
        term.clear()

        -- Draw the ASCII art
        drawASCIIArt(math.floor((h - #dogImage) / 2), colors.white)

        -- Center and display the message
        centerText(messageY, message)

        -- Wait briefly before clearing and redrawing
        os.sleep(1)
    end
end

-- Main program
insertBootableMediumMessage()