-- VA11-ILLA Bootloader
local function clearScreen()
    term.clear()
    term.setCursorPos(1, 1)
end

local function rebootDevice()
    os.reboot()
end

local function recoverSystem()
    shell.run("/disk/boot/Recovery.lua")
end

local function bootOptions()
    clearScreen()
    print("Select disk to boot from:")
    local disks = peripheral.find("drive")
    if disks then
        for i, disk in ipairs(disks) do
            print(i .. ". " .. disk)
        end
        local choice = read()
        if tonumber(choice) and disks[tonumber(choice)] then
            shell.run("/disk/" .. disks[tonumber(choice)] .. "/startup.lua")
        else
            print("Invalid choice!")
        end
    else
        print("No disks found.")
    end
end

local function setPassword()
    clearScreen()
    if not fs.exists("/firmware") then
        fs.makeDir("/firmware")
    end
    print("Enter new admin password:")
    local password = read("*")
    local file = fs.open("/firmware/password.cfg", "w")
    file.write(password)
    file.close()
    print("Password set.")
end

local function removePassword()
    if fs.exists("/firmware/password.cfg") then
        fs.delete("/firmware/password.cfg")
        print("Password removed.")
    else
        print("No password set.")
    end
end

local function securityMenu()
    while true do
        clearScreen()
        print("Security Menu:")
        print("1. Lock with admin password")
        print("2. Remove Lock")
        print("3. Back to main menu")
        local choice = read()
        if choice == "1" then
            setPassword()
        elseif choice == "2" then
            removePassword()
        elseif choice == "3" then
            break
        else
            print("Invalid choice! Press any key to continue...")
            os.pullEvent("key")
        end
    end
end

local function checkPassword()
    if fs.exists("/firmware/password.cfg") then
        clearScreen()
        print("Enter admin password:")
        local password = read("*")
        local file = fs.open("/firmware/password.cfg", "r")
        local savedPassword = file.readAll()
        file.close()
        if password == savedPassword then
            return true
        else
            print("Invalid password!")
            sleep(2)
            return false
        end
    end
    return true
end

local function mainMenu()
    while true do
        clearScreen()
        print("VA11-ILLA Bootloader:")
        print("1. Boot Doggy OS")
        print("2. Recover system")
        print("3. Boot options")
        print("4. Security")
        print("5. Exit")
        local choice = read()
        if choice == "1" then
            rebootDevice()
        elseif choice == "2" then
            recoverSystem()
        elseif choice == "3" then
            bootOptions()
        elseif choice == "4" then
            securityMenu()
        elseif choice == "5" then
            break
        else
            print("Invalid choice! Press any key to continue...")
            os.pullEvent("key")
        end
    end
end

-- Start Bootloader
if checkPassword() then
    mainMenu()
end