local term = term

local function centerText(y, text)
    local w, _ = term.getSize()
    local x = math.floor((w - #text) / 2) + 1
    term.setCursorPos(x, y)
    term.write(text)
end

local function drawUI()
    term.clear()
    term.setCursorPos(1,1)
    centerText(3, "\x1b[31m[ SYSTEM RECOVERY MODE ]\x1b[0m")
    centerText(5, "Initializing Boot Sector Restoration...")
    centerText(7, "Ensure the SSD/HDD remains connected.")
end

drawUI()
sleep(5)

term.clear()
centerText(5, "\x1b[33mWARNING:\x1b[0m Bootloader restoration will overwrite existing data.")
centerText(7, "Press ENTER to proceed or CTRL+T to abort.")
read()

term.clear()
centerText(3, "[ PROCESSING ]")
centerText(5, "Erasing previous boot configuration...")
sleep(2)
shell.run("delete", "/no-os")
shell.run("delete", "/startup")

term.clear()
centerText(3, "[ INSTALLATION IN PROGRESS ]")
for i = 1, 20 do
    term.setCursorPos(10 + i, 7)
    term.write("#")
    sleep(0.1)
end

centerText(9, "Deploying new bootloader components...")
sleep(1)
shell.run("cp", "/disk/boot/error/", "/startup")
shell.run("cp", "/disk/bootloader/no-os.lua", "/no-os")

term.clear()
centerText(3, "[ COMPLETION STATUS ]")
centerText(5, "\x1b[32mBootloader successfully restored!\x1b[0m")
sleep(3)

term.clear()
centerText(3, "[ DEBUG INFO ]")
centerText(5, "Boot files verified. No errors detected.")
centerText(7, "System will now reboot.")
sleep(2)
os.reboot()