{ pkgs, ... }:
let
  apply-theme-script = pkgs.writeScript "apply-theme" ''
    curr=$(cat ~/.config/cornflake/current-theme)
    if [ "$curr" = "prefer-light" ]; then
        dconf write /org/gnome/desktop/interface/color-scheme "'prefer-light'"
    else
        dconf write /org/gnome/desktop/interface/color-scheme "'prefer-dark'"
    fi
  '';

  desktopEntry = {
    name = "Toggle theme";
    exec = ''${pkgs.writeScript "theme" ''
      curr=$(cat ~/.config/cornflake/current-theme)
      if [ "$curr" = "prefer-light" ]; then
        echo 'prefer-dark' > ~/.config/cornflake/current-theme
      else
        echo 'prefer-light' > ~/.config/cornflake/current-theme
      fi
      ${apply-theme-script}
    ''}'';
  };
in
{
  xdg.desktopEntries = {
    theme-switcher = desktopEntry;
  };
}