# Hyprland under uwsm, logging in on tty1, audio, Bluetooth, fonts and the
# system side of theming.
{
  pkgs,
  ...
}:
{
  programs.hyprland = {
    enable = true;
    # uwsm starts Hyprland as a systemd unit and brings up
    # graphical-session.target, which the user services in
    # modules/home/services.nix hang off.
    withUWSM = true;
  };
  programs.hyprlock.enable = true;

  xdg.portal = {
    enable = true;
    # File pickers and settings for GTK apps; screen sharing comes from
    # xdg-desktop-portal-hyprland, which programs.hyprland adds.
    extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
  };

  # --- Login --------------------------------------------------------------------

  # No display manager: tty1 logs you in automatically and its login shell starts
  # Hyprland. The session comes up locked, though: hyprlock runs first and the
  # rest of the desktop (graphical-session.target) waits until it is unlocked;
  # see login-lock in modules/home/desktop.nix.
  services.getty.autologinUser = "vizie";

  # In /etc/profile and /etc/zprofile, after the session variables. The tty test
  # comes first so that uwsm's environment preloader, which reads the profile
  # too, skips this without running uwsm. The VT is briefly visible before
  # Hyprland takes over the screen, so clear it, hide the text cursor, and keep
  # uwsm's startup report off it; Hyprland logs to the journal.
  environment.loginShellInit = ''
    if [ "$(tty)" = /dev/tty1 ] && uwsm check may-start -q; then
      printf '\033[2J\033[3J\033[H\033[?25l'
      exec uwsm start hyprland-uwsm.desktop >/dev/null 2>&1
    fi
  '';

  # Home Manager's dconf.settings (theming.nix, services.nix) need it.
  programs.dconf.enable = true;

  # --- Audio, Bluetooth, devices --------------------------------------------------

  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
    jack.enable = true;
  };
  services.pulseaudio.enable = false;

  hardware.bluetooth = {
    enable = true;
    powerOnBoot = true;
  };
  services.blueman.enable = true;

  services.upower.enable = true;
  services.udisks2.enable = true;
  services.gvfs.enable = true;
  security.polkit.enable = true;
  # Secret Service (what Electron apps and libsecret store passwords in) from
  # KWallet's ksecretd, started on demand over D-Bus, as on CachyOS. Not GNOME
  # Keyring: it would claim the same D-Bus name.
  services.dbus.packages = [ pkgs.kdePackages.kwallet ];

  # Battery of the Logitech mouse in the control centre (mouse-battery.sh).
  hardware.logitech.wireless.enable = true;

  # --- Fonts -------------------------------------------------------------------

  # The fonts installed on CachyOS. kitty's config asks for JetBrains Mono, which
  # was never installed there, so kitty has been using Noto Sans Mono; add
  # nerd-fonts.jetbrains-mono here to get the font the config names.
  fonts.packages = with pkgs; [
    noto-fonts
    noto-fonts-cjk-sans
    noto-fonts-color-emoji
    nerd-fonts.noto
    nerd-fonts.meslo-lg
    nerd-fonts.fantasque-sans-mono
    dejavu_fonts
    liberation_ttf
    ttf-bitstream-vera
    open-sans
    cantarell-fonts
    adwaita-fonts
    font-awesome
    wqy_zenhei
  ];

  # --- Theming (system side) ------------------------------------------------------

  # Qt apps use qt6ct + Kvantum (set up by Home Manager, modules/home/theming.nix).
  qt = {
    enable = true;
    platformTheme = "qt5ct";
    style = "kvantum";
  };

  environment.systemPackages = with pkgs; [
    breezex-cursor
    papirus-icon-theme
    kdePackages.breeze-icons
    gnome-themes-extra
    adwaita-icon-theme
    kdePackages.qtstyleplugin-kvantum
    libsForQt5.qtstyleplugin-kvantum
    qt6Packages.qt6ct
  ];
}