# roles/thin-client/session/branding.nix
#
# Light branding: corporate wallpaper, SDDM logo overlay, Breeze Light,
# Property-of-footer (hostname + IT hotline) on the lock screen.
# Q17 decisions: Light Branding, no login banner, user may adjust KDE.
{
  config,
  lib,
  pkgs,
  ...
}: let
  inherit (lib) mkIf;
  cfg = config.az.tc;
in {
  options.az.tc.branding = {
    hotline = lib.mkOption {
      type = lib.types.str;
      default = "+49 30 1234567"; # TODO: real hotline
      description = "IT-Hotline phone number for the property-of footer.";
    };
    wallpaper = lib.mkOption {
      type = lib.types.path;
      default = ./assets/wallpaper.svg;
      description = ''
        Path to a corporate wallpaper image (JPEG or SVG). Replace
        `roles/thin-client/session/assets/wallpaper.svg` with the real
        asset, or override this option.
      '';
    };
    logo = lib.mkOption {
      type = lib.types.path;
      default = ./assets/logo.svg;
      description = ''
        Path to the corporate logo (SVG or PNG). Used in SDDM and lock
        screen footer.
      '';
    };
    company = lib.mkOption {
      type = lib.types.str;
      default = "AzIntec GmbH";
      description = "Company name shown in the property-of footer.";
    };
  };

  config = mkIf cfg.enable {
    environment = {
      etc = {
        # Wallpaper — install to /etc/az-wallpaper so KDE's wallpaper plugin
        # can find it via the standard search path.
        "az-wallpaper".source = config.az.tc.branding.wallpaper;

        # Default Plasma configuration as /etc/xdg — KDE reads these as
        # the system-wide defaults. User-specific changes are layered on top.
        "xdg/kdeglobals".text = ''
          [General]
          ColorScheme=Breeze Light

          [KDE]
          widgetStyle=Breeze

          [Icons]
          Theme=breeze

          [Wallpaper]
          Image=file:///etc/az-wallpaper
        '';

        # Lock-screen footer (rendered by kscreenlocker_greet).
        "xdg/kscreenlockerrc".text = ''
          [Greeter]
          Logo=${config.az.tc.branding.logo}
          Footer=${config.az.tc.branding.company} · ${config.networking.hostName} · IT-Hotline: ${config.az.tc.branding.hotline}
        '';
      };
    };

    # Property-of-footer via SDDM theme config. Lightweight: we don't
    # ship a full custom SDDM theme — we just set the footer string that
    # the default Breeze SDDM theme shows.
    services.displayManager.sddm.settings.Theme = {
      Wallpaper = config.az.tc.branding.wallpaper;
      Logo = config.az.tc.branding.logo;
    };
  };
}