{ pkgs, config, lib, flakeRoot, ... }:

let
  grubThemeDir = "/boot/grub/themes/catppuccin-mocha";
  grubThemeFile = "${grubThemeDir}/theme.txt";
in
{
  boot.loader.grub = {
    enable = true;
    efiSupport = true;
    devices = [ "nodev" ];
    useOSProber = true;
    theme = grubThemeFile;
    timeout = 5;
  };

  boot.kernelPackages = pkgs.linuxPackages_latest;
  boot.kernelParams = [ "quiet" "udev.log_level=3" "systemd.show_status=auto" ];
  boot.consoleLogLevel = 3;
  boot.supportedFilesystems = [ "ntfs" ];

  # Activation script for theme + background
  system.activationScripts.grubTheme = {
    text = ''
      mkdir -p ${grubThemeDir}

      cat > ${grubThemeFile} <<EOF
# Catppuccin Mocha GRUB theme
desktop-color = #1e1e2e
normal-color  = #cdd6f4
selected-item-color = #f5e0dc
selected-item-highlight-color = #f5c2e7
EOF

      if [ -f "${flakeRoot}/assets/system/theming/boot/background.png" ]; then
        cp "${flakeRoot}/assets/system/theming/boot/background.png" "${grubThemeDir}/background.png"
      fi
      echo "GRUB Catppuccin Mocha theme installed and config updated."
    '';
  };
}