Boot-Failure

-- Initial Error Screen Code
local function displayErrorScreen()
    -- 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

    -- Display the dog ASCII art with red Xes for eyes
    local dogArt = {
        "     |\\_/|                  ",
        "     | X X   SYSTEM 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.red)
    end

    -- Display error message below the dog ASCII art in white
    term.setTextColor(colors.white)
    centerText(startLine + #dogArt + 2, "Fatal startup failure", colors.white)
    centerText(startLine + #dogArt + 3, "Error code: C633", colors.white)

    -- Move "Press F1 for advanced options." to the bottom in white
    centerText(height - 2, "Press F1 for advanced options.", colors.white)
end

-- Repair Code Function
local function repairBootloader()
    -- 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

    -- Define the dog ASCII art with white color and @ for eyes
    local dogArt = {
        "     |\\_/|                  ",
        "     | @ @                  ",
        "     |   <>              _   ",
        "     |  _/\\------____ ((| |))",
        "     |               `--' |  ",
        " _____|_       ___|   |___.  ",
        "/_/_____/____/_______|       "
    }

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

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

    -- Display the "Repairing System Bootloader..." message in white
    centerText(startLine + #dogArt + 2, "Repairing System Bootloader...", colors.white)

    -- Wait for 10 seconds to simulate the repair process
    sleep(10)

    -- Delete existing startup and no-os files
    fs.delete("/startup")
    fs.delete("/no-os")

    -- Copy the recovery files to the root directory
    fs.copy("/recovery/boot/error", "/startup")
    fs.copy("/recovery/bootloader/no-os.lua", "/no-os")

    -- Display the "Repair Completed. Rebooting..." message in white
    centerText(startLine + #dogArt + 4, "Repair Completed. Rebooting...", colors.white)

    -- Wait for 3 seconds before rebooting
    sleep(3)

    -- Reboot the system
    os.reboot()
end

-- Recovery Shell Function
local function recoveryShell()
    -- Clear the screen and set up colors
    term.clear()
    term.setBackgroundColor(colors.black)
    term.setTextColor(colors.white)
    term.clear()

    -- Alternative shell from CraftOS shell
    termutils = {}

    termutils.clear = function()
        term.clear()
        term.setCursorPos(1,1)
    end

    termutils.clearColor = function()
        term.setTextColor(colors.white)
        term.setBackgroundColor(colors.black)
    end

    function input()
        term.setTextColor(colors.white)
        local dir = shell.dir().."/"..">"
        write(dir)
        termutils.clearColor()
        command = io.read()
    end

    termutils.clear()
    print("VA11-ILLA EFI Recovery Shell")
    while true do
        input()
        shell.run(command)
    end
end

-- Main Logic
local function main()
    -- Display the error screen initially
    displayErrorScreen()

    -- Wait for F1 key press (simulated as a specific input for simplicity)
    while true do
        local event, key = os.pullEvent("key")
        if key == keys.f1 then
            -- Ask user for recovery option
            term.clear()
            print("Select Recovery Option:")
            print("1. Repair Bootloader")
            print("2. Recover from /recovery")
            print("3. Recover from external source")
            print("4. Run recovery shell")
            local option = io.read()

            if option == "1" then
                repairBootloader()
            elseif option == "2" then
                -- Implement recovery from /recovery
                term.clear()
                print("Recovering from /recovery...")
                fs.delete("/disk/")
                fs.copy("/recovery/", "/disk/")
                print("Recovery from /recovery completed.")
                os.reboot()
            elseif option == "3" then
                -- Implement recovery from external source
                term.clear()
                print("Recovering from external source...")
                fs.delete("/disk/")
                fs.copy("/disk2/", "/disk/")
                print("Recovery from external source completed.")
                os.reboot()
            elseif option == "4" then
                recoveryShell()
            else
                print("Invalid option.")
            end
        end
    end
end

-- Run the main function
main()