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

let
  # bash script to let dbus know about important env variables and
  # propagate them to relevent services run at the end of sway config
  # see
  # https://github.com/emersion/xdg-desktop-portal-wlr/wiki/"It-doesn't-work"-Troubleshooting-Checklist
  # note: this is pretty much the same as  /etc/sway/config.d/nixos.conf but also restarts  
  # some user services to make sure they have the correct environment variables
  dbus-sway-environment = pkgs.writeTextFile {
    name = "dbus-sway-environment";
    destination = "/bin/dbus-sway-environment";
    executable = true;

    text = ''
      dbus-update-activation-environment --systemd WAYLAND_DISPLAY XDG_CURRENT_DESKTOP=sway
      systemctl --user stop pipewire pipewire-media-session xdg-desktop-portal xdg-desktop-portal-wlr
      systemctl --user start pipewire pipewire-media-session xdg-desktop-portal xdg-desktop-portal-wlr
    '';
  };
  
  # currently, there is some friction between sway and gtk:
  # https://github.com/swaywm/sway/wiki/GTK-3-settings-on-Wayland
  # the suggested way to set gtk settings is with gsettings
  # for gsettings to work, we need to tell it where the schemas are
  # using the XDG_DATA_DIR environment variable
  # run at the end of sway config
  configure-gtk = pkgs.writeTextFile {
    name = "configure-gtk";
    destination = "/bin/configure-gtk";
    executable = true;
    text = let
      schema = pkgs.gsettings-desktop-schemas;
      datadir = "${schema}/share/gsettings-schemas/${schema.name}";
    in ''
      export XDG_DATA_DIRS=${datadir}:$XDG_DATA_DIRS
      gnome_schema=org.gnome.desktop.interface
      gsettings set $gnome_schema gtk-theme 'Dracula'
    '';
  };
in
{
  services.xserver = {
    enable = true;

    displayManager.lightdm.enable = true;

    excludePackages = with pkgs; [
      xterm
    ];
  };

  security.polkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    pulse.enable = true;
  };

  services.dbus.enable = true;
  xdg.portal = {
    enable = true;
    wlr.enable = true;
    extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
  };

  programs.sway = {
    enable = true;
    wrapperFeatures.gtk = true;
  };

  home-manager.users.tdpeuter = { pkgs, ... }: {
    home = {
      username = "tdpeuter";
      homeDirectory = "/home/tdpeuter";
      
      file = {
        ".config/sway".source = ../../../../stow/sway/.config/sway;
        ".config/waybar".source = ../../../../stow/waybar/.config/waybar;
        ".config/dunst".source = ../../../../stow/dunst/.config/dunst;
        # TODO Fix scripts, I don't like it this way
        ".scripts".source = ../../../../stow/_scripts/.scripts;
      };

      packages = with pkgs; [
        brightnessctl
        dunst
        font-awesome
        pamixer
        pavucontrol
        playerctl
        swayidle
        swaylock-effects
        waybar
        wmname
      ];
#    };
#
#    wayland.windowManager.sway = {
#      enable = true;
#      package = pkgs.sway-unwrapped;
#      config = rec {
#        terminal = "alacritty";
#        startup = [
#          {command = "alacritty";}
#        ];
#      };
    };
  };
}