# Stylix — themes the long tail of applications (GTK, Qt, cursors,
# fonts) from the same theme-state.json that drives the live engine.
#
# Division of labour: the hot-reload trio (Hyprland, Waybar, Ghostty)
# is owned by the Nomarchy engine and updates instantly; everything
# Stylix touches updates on the next home-manager switch. That is why
# autoEnable is off and the trio's Stylix targets stay disabled.
#
# Note: the stylix home module itself is imported by homeModules.nomarchy
# in flake.nix (it needs the stylix flake input).
{ config, lib, pkgs, ... }:

let
  cfg = config.nomarchy;
  t = cfg.theme;
  c = t.colors;
  hex = lib.removePrefix "#";

  # Map the Nomarchy palette onto base16 roles.
  base16 = {
    base00 = hex c.base;     # default background
    base01 = hex c.mantle;   # darker background (status bars)
    base02 = hex c.surface;  # selection background
    base03 = hex c.muted;    # comments
    base04 = hex c.subtext;  # dark foreground
    base05 = hex c.text;     # default foreground
    base06 = hex c.text;     # light foreground
    base07 = hex c.text;     # lightest foreground
    base08 = hex c.bad;      # red
    base09 = hex c.warn;     # orange
    base0A = hex c.warn;     # yellow
    base0B = hex c.good;     # green
    base0C = hex (builtins.elemAt t.ansi 6); # cyan
    base0D = hex c.accent;   # blue
    base0E = hex c.accentAlt;# magenta
    base0F = hex c.bad;      # brown/deprecated
  };
in
{
  config = lib.mkIf cfg.stylix.enable {
    stylix = {
      enable = true;
      autoEnable = false; # explicit targets only — the engine owns the rest
      polarity = if t.mode == "light" then "light" else "dark";
      base16Scheme = base16;

      targets = {
        gtk.enable = true;
        qt.enable = true;
      };

      cursor = {
        name = lib.mkDefault "Bibata-Modern-Classic";
        package = lib.mkDefault pkgs.bibata-cursors;
        size = lib.mkDefault 24;
      };

      # GTK/file-manager/rofi icon theme, resolved from the JSON in
      # theme.nix (per-theme `icons`, else Papirus-Dark/Light by mode).
      # Stylix sets gtk.iconTheme from this; both dark/light point at the
      # already-mode-resolved name.
      icons = {
        enable = true;
        package = lib.mkDefault pkgs.papirus-icon-theme;
        dark = t.iconTheme;
        light = t.iconTheme;
      };

      fonts = {
        monospace = {
          name = t.fonts.mono;
          package = lib.mkDefault pkgs.nerd-fonts.jetbrains-mono;
        };
        sansSerif = {
          name = t.fonts.ui;
          package = lib.mkDefault pkgs.inter;
        };
        serif = {
          name = t.fonts.ui;
          package = lib.mkDefault pkgs.inter;
        };
        emoji = {
          name = "Noto Color Emoji";
          package = lib.mkDefault pkgs.noto-fonts-color-emoji;
        };
        sizes.terminal = t.fonts.size;
      };
    };

    # GTK4/libadwaita and Qt6 apps decide dark vs light from the XDG
    # portal's color-scheme (org.freedesktop.appearance), which
    # xdg-desktop-portal-gtk sources from this gsettings key. Stylix sets
    # the GTK theme and `polarity` but not this, so a light theme still
    # rendered libadwaita/Qt apps dark (and vice-versa). Drive it from the
    # palette mode. (programs.dconf.enable is already on system-side.)
    dconf.settings."org/gnome/desktop/interface".color-scheme =
      if t.mode == "light" then "prefer-light" else "prefer-dark";
  };
}