-- Doggy OS UEFI with Animations and Transitions

-- Function to draw a border
local function drawBorder()
    term.clear()
    local w, h = term.getSize()
    for y = 1, h do
        term.setCursorPos(1, y)
        term.write("|")
        term.setCursorPos(w, y)
        term.write("|")
    end
    for x = 1, w do
        term.setCursorPos(x, 1)
        term.write("-")
        term.setCursorPos(x, h)
        term.write("-")
    end
    term.setCursorPos(1, 1)
    term.write("+")
    term.setCursorPos(w, 1)
    term.write("+")
    term.setCursorPos(1, h)
    term.write("+")
    term.setCursorPos(w, h)
    term.write("+")
end

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

-- Function to animate fading text
local function fadeText(text, y, duration)
    local steps = 10
    local interval = duration / steps
    for i = 1, steps do
        term.setTextColor(colors.gray + i)
        centerText(text, y)
        sleep(interval)
    end
    term.setTextColor(colors.white) -- Reset text color
end

-- Function to show a loading animation
local function loadingAnimation(y)
    local w, _ = term.getSize()
    local x = math.floor(w / 2)
    local symbols = { "-", "\\", "|", "/" }
    for i = 1, 12 do -- Run for a few iterations
        term.setCursorPos(x, y)
        term.write(symbols[(i - 1) % #symbols + 1])
        sleep(0.1)
    end
end

-- Function to show the UEFI message
local function showUEFIMessage(message)
    drawBorder()
    local _, h = term.getSize()
    centerText("Doggy OS UEFI", math.floor(h / 2) - 1)
    fadeText(message, math.floor(h / 2) + 1, 1.5)
end

-- Function to load the boot animation
local function loadBootAnimation()
    if fs.exists("/disk/boot/boot-animation") then
        shell.run("/disk/boot/boot-animation")
    else
        print("Boot animation not found!")
    end
end

-- Function to load the boot options
local function loadBootOptions()
    if fs.exists("/disk/boot/boot-options") then
        shell.run("/disk/boot/boot-options")
    else
        print("Boot options not found!")
    end
end

-- Main function to handle UEFI message and timeout
local function main()
    showUEFIMessage("Press DEL to show startup options")
    loadingAnimation(math.floor(select(2, term.getSize()) / 2) + 2)

    local timer = os.startTimer(2.5)  -- Set a timer for 2 seconds

    while true do
        local event, param = os.pullEvent()
        if event == "key" and param == keys.delete then
            -- Update message and load boot options
            showUEFIMessage("Loading startup menu...")
            sleep(1)  -- Pause briefly for effect
            loadBootOptions()
            return
        elseif event == "timer" and param == timer then
            -- Timer expired, load boot animation
            loadBootAnimation()
            return
        end
    end
end

-- Start the main function
main()