feat: more dynamic theming

modules/nixos/theming/matugen.nix

@@ -17,10 +17,76 @@ in
   };
 
   config = mkIf cfg.enable {
-    environment.systemPackages = with pkgs; [
-      matugen
-      swww
-    ];
+    environment = {
+      systemPackages = [
+        pkgs.adw-gtk3
+        pkgs.matugen
+        (pkgs.writeShellApplication {
+          name = "theme";
+          runtimeInputs = [
+            pkgs.matugen
+            pkgs.swww
+            pkgs.gnome.zenity
+          ];
+          text = ''
+            WALLPAPER=${homeCfg.xdg.configHome}/matugen/wallpaper
+
+            SCHEME=$(dconf read /org/gnome/desktop/interface/color-scheme)
+            if [ "$SCHEME" = "'prefer-light'" ]; then
+              MODE="light"
+            else
+              MODE="dark"
+            fi
+
+            if [ $# -eq 0 ]; then
+              echo -e "\033[1mUsage:\033[0m mode|light|dark|toggle|wallpaper"
+              exit 1
+            elif [ "$1" = "mode" ]; then
+              echo -e "$MODE"
+              exit 0
+            elif [ "$1" = "wallpaper" ]; then
+              if [ $# -eq 1 ]; then
+                PICKED=$(zenity --file-selection --file-filter='Images | *.png *.jpg *.jpeg *.svg *.bmp *.gif')
+                cp "$PICKED" "$WALLPAPER"
+              else
+                cp "$2" "$WALLPAPER"
+              fi
+            elif [ "$1" = "toggle" ]; then
+              if [ "$MODE" = "light" ]; then
+                MODE="dark"
+              else
+                MODE="light"
+              fi
+            elif [ "$1" = "light" ] || [ "$1" = "dark" ]; then
+              MODE="$1"
+            elif [ "$1" = "init" ]; then
+              echo -e "\033[1mSetting up matugen\033[0m"
+            else
+              echo -e "\033[31mInvalid argument\033[0m"
+              exit 1
+            fi
+
+            if [ ! -f $WALLPAPER ]; then
+              echo -e "\033[31,1mNo wallpaper set\033[0m"
+              exit 1
+            fi
+
+            if [ "$MODE" = "light" ]; then
+              GTK_THEME="adw-gtk3"
+            else
+              GTK_THEME="adw-gtk3-dark"
+            fi
+            dconf write /org/gnome/desktop/interface/gtk-theme "'$GTK_THEME'"
+            dconf write /org/gnome/desktop/interface/color-scheme "'prefer-$MODE'"
+            matugen image "$WALLPAPER" --mode "$MODE"
+
+            for i in $(pgrep -u "$USER" -x nvim); do
+              kill -USR1 "$i"
+            done
+          '';
+        })
+      ];
+    };
 
     home-manager.users.${username} = {
       programs.kitty.extraConfig = ''
@@ -31,10 +97,9 @@ in
         config = {
           reload_apps = true;
           reload_apps_list = {
-            kitty = true;
-            gtk_theme = false;
-            waybar = false;
-            dunst = false;
+            kitty = homeCfg.programs.kitty.enable;
+            waybar = homeCfg.programs.waybar.enable;
+            dunst = homeCfg.services.dunst.enable;
           };
 
           set_wallpaper = true;