-- startup.lua

-- Function to clear the screen and set the background color
local function clearScreen()
    term.clear()
    term.setBackgroundColor(colors.black)
    term.setTextColor(colors.white)
end

-- Function to center and draw the ASCII art, additional text, and spinning wheel
local function drawCenteredAsciiArtAndText()
    local artLines = {
        "    _____^_",
        "   |    |    \\",
        "    \\   /  ^ |",
        "   / \\_/   0  \\",
        "  /            \\",
        " /    ____      0",
        "/      /  \\___ _/"
    }

    local additionalText = "Doggy OS Pocket"

    local screenWidth, screenHeight = term.getSize()
    local artWidth = 0
    local artHeight = #artLines

    -- Calculate the width of the widest line in the ASCII art
    for _, line in ipairs(artLines) do
        artWidth = math.max(artWidth, #line)
    end

    -- Calculate the width of the additional text
    local textWidth = #additionalText

    -- Calculate starting positions
    local startX = math.floor((screenWidth - artWidth) / 2) + 1
    local startY = math.floor((screenHeight - artHeight - 2 - 2) / 2) + 1  -- -2 for art height and spacing, -2 for additional text and spacing

    -- Draw ASCII art
    for i, line in ipairs(artLines) do
        term.setCursorPos(startX, startY + i - 1)
        term.setTextColor(colors.yellow)
        print(line)
    end

    -- Draw additional text below ASCII art with 1 line spacing
    local textX = math.floor((screenWidth - textWidth) / 2) + 1
    local textY = startY + artHeight + 1  -- 1 line spacing
    term.setCursorPos(textX, textY)
    term.setTextColor(colors.white)
    print(additionalText)

    -- Draw spinning wheel below additional text with 1 line spacing
    local wheelX = math.floor(screenWidth / 2) + 1
    local wheelY = textY + 1  -- 1 line spacing
    local wheelStates = {"|", "/", "-", "\\"}
    local wheelIndex = 1

    while true do
        term.setCursorPos(wheelX, wheelY)
        term.setTextColor(colors.white)
        print(wheelStates[wheelIndex])

        -- Update the wheel index
        wheelIndex = (wheelIndex % #wheelStates) + 1

        -- Delay for animation effect
        os.sleep(0.1)  -- Adjust the speed of the spinning wheel here

        -- Clear the previous wheel position (optional)
        term.setCursorPos(wheelX, wheelY)
        term.setTextColor(colors.black)
        print(" ")
    end
end

-- Main program
clearScreen()
drawCenteredAsciiArtAndText()