Kernel

-- Clear the screen and set up colors
term.clear()
term.setBackgroundColor(colors.black)
term.setTextColor(colors.white)
term.clear()

-- Define the width and height of the screen
local width, height = term.getSize()

-- Helper function to center text on the screen
local function centerText(y, text, textColor)
    local x = math.floor((width - #text) / 2)
    term.setCursorPos(x, y)
    term.setTextColor(textColor)
    term.write(text)
end

-- Function to display the error screen
local function showErrorScreen()
    -- Display the dog ASCII art with red Xes for eyes
    local dogArt = {
        "     |\\_/|                  ",
        "     | ? ?   KERNEL ERROR!   ",
        "     |   <>              _   ",
        "     |  _/\\------____ ((| |))",
        "     |               `--' |  ",
        " _____|_       ___|   |___.  ",
        "/_/_____/____/_______|       "
    }

    local startLine = math.floor((height - #dogArt) / 2) - 2

    -- Display the dog ASCII art with red Xes for eyes in red
    term.setTextColor(colors.red)
    for i, line in ipairs(dogArt) do
        centerText(startLine + i, line, colors.yellow)
    end

    -- Display error message below the dog ASCII art in white
    term.setTextColor(colors.white)
    centerText(startLine + #dogArt + 2, "Kernel Power Loss", colors.white)
    centerText(startLine + #dogArt + 3, "Press F1 to continue", colors.white)

    -- Wait for F1 key press to continue
    while true do
        local event, key = os.pullEvent("key")
        if key == keys.f1 then
            break -- Exit loop and continue
        end
    end
end

-- Check if ACPI.signal exists
if not ACPI or not ACPI.signal then
    showErrorScreen()
else
    -- Check if the file exists and run it
    if fs.exists("/disk/boot/start-check.lua") then
        shell.run("/disk/boot/start-check.lua")
    else
        -- If the file doesn't exist, show error screen
        showErrorScreen()
    end
end