feat: update dependencies and integrate skin manager

- Added `dartamp_skin` as a local dependency in `pubspec.yaml`.
- Updated `path_provider` to version ^2.1.5.
- Modified `test_driver/app.dart` to initialize `SkinManager` and pass it to `DartampApp`.
- Updated `generated_plugins.cmake` to include `jni` in the FFI plugin list.

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

lib/main.dart

@@ -1,6 +1,9 @@
 import "dart:async";
+import "dart:io";
 
+import "package:dartamp_skin/dartamp_skin.dart";
 import "package:desktop_multi_window/desktop_multi_window.dart";
+import "package:file_picker/file_picker.dart";
 import "package:flutter/material.dart";
 import "package:flutter/services.dart";
 import "package:window_manager/window_manager.dart";
@@ -8,8 +11,7 @@ import "package:window_manager/window_manager.dart";
 import "src/common_widgets.dart";
 import "src/main_window/main_window.dart";
 import "src/player/player_state.dart";
-import "src/skin/classic_skin.dart";
-import "src/skin/skin_loader.dart";
+import "src/skin/skin_manager.dart";
 import "src/windows/sub_window_app.dart";
 import "src/windows/sub_window_channel.dart";
 import "src/windows/window_args.dart";
@@ -35,6 +37,7 @@ Future<void> main(List<String> args) async {
           type: subWindowArgs.type,
           initialShade: subWindowArgs.shade,
           initialAlwaysOnTop: subWindowArgs.alwaysOnTop,
+          initialSkinName: subWindowArgs.skinName,
         ),
       ),
     );
@@ -46,6 +49,7 @@ Future<void> main(List<String> args) async {
   final eqOpen = await PlayerState.loadEqOpen();
   final plOpen = await PlayerState.loadPlOpen();
   final uiScale = await PlayerState.loadUiScale();
+  final skinManager = await SkinManager.load();
   await windowManager.ensureInitialized();
   runApp(
     DartampApp(
@@ -54,6 +58,7 @@ Future<void> main(List<String> args) async {
       initialEqOpen: eqOpen,
       initialPlOpen: plOpen,
       initialUiScale: uiScale,
+      skinManager: skinManager,
     ),
   );
 }
@@ -75,6 +80,7 @@ class DartampApp extends StatelessWidget {
     required this.initialEqOpen,
     required this.initialPlOpen,
     required this.initialUiScale,
+    required this.skinManager,
     super.key,
   });
 
@@ -83,6 +89,7 @@ class DartampApp extends StatelessWidget {
   final bool initialEqOpen;
   final bool initialPlOpen;
   final double initialUiScale;
+  final SkinManager skinManager;
 
   @override
   Widget build(BuildContext context) {
@@ -94,6 +101,7 @@ class DartampApp extends StatelessWidget {
         initialEqOpen: initialEqOpen,
         initialPlOpen: initialPlOpen,
         initialUiScale: initialUiScale,
+        skinManager: skinManager,
       ),
     );
   }
@@ -106,6 +114,7 @@ class WinampRoot extends StatefulWidget {
     required this.initialEqOpen,
     required this.initialPlOpen,
     required this.initialUiScale,
+    required this.skinManager,
     super.key,
   });
 
@@ -114,6 +123,7 @@ class WinampRoot extends StatefulWidget {
   final bool initialEqOpen;
   final bool initialPlOpen;
   final double initialUiScale;
+  final SkinManager skinManager;
 
   @override
   State<WinampRoot> createState() => _WinampRootState();
@@ -121,12 +131,14 @@ class WinampRoot extends StatefulWidget {
 
 class _WinampRootState extends State<WinampRoot> {
   late final PlayerState _player;
+  late final SkinManager _skins;
   bool _windowReady = false;
   bool _wasShade = false;
   double _wasScale = 1.0;
   bool _wasAlwaysOnTop = false;
   bool _wasEqOpen = false;
   bool _wasPlOpen = false;
+  String _wasSkinName = baseSkinName;
   WindowController? _eqController;
   WindowController? _plController;
   StreamSubscription<void>? _windowsSubscription;
@@ -141,12 +153,15 @@ class _WinampRootState extends State<WinampRoot> {
       plOpen: widget.initialPlOpen,
       uiScale: widget.initialUiScale,
     );
+    _skins = widget.skinManager;
     _wasShade = widget.initialWindowShade;
     _wasScale = widget.initialUiScale;
     _wasAlwaysOnTop = widget.initialAlwaysOnTop;
     _wasEqOpen = widget.initialEqOpen;
     _wasPlOpen = widget.initialPlOpen;
+    _wasSkinName = _skins.active.name;
     _player.addListener(_onPlayerChanged);
+    _skins.addListener(_onSkinChanged);
 
     // Set up method channel for macOS menu actions
     _winampChannel.setMethodCallHandler(_handleMethodCall);
@@ -171,6 +186,7 @@ class _WinampRootState extends State<WinampRoot> {
   void dispose() {
     _windowsSubscription?.cancel();
     _player.removeListener(_onPlayerChanged);
+    _skins.removeListener(_onSkinChanged);
     _player.dispose();
     super.dispose();
   }
@@ -249,6 +265,30 @@ class _WinampRootState extends State<WinampRoot> {
     _player.setPlOpen(!_player.plOpen);
   }
 
+  void _onSkinChanged() {
+    final name = _skins.active.name;
+    if (name == _wasSkinName) return;
+    _wasSkinName = name;
+    _eqController?.invokeMethod("setSkin", name);
+    _plController?.invokeMethod("setSkin", name);
+  }
+
+  Future<void> _importSkin() async {
+    final result = await FilePicker.pickFiles(
+      type: FileType.custom,
+      allowedExtensions: const ["wsz", "zip"],
+      dialogTitle: "Load Winamp Skin",
+    );
+    final path = result?.files.single.path;
+    if (path == null) return;
+    try {
+      final bytes = await File(path).readAsBytes();
+      await _skins.importArchive(bytes, fileName: path.split("/").last);
+    } catch (_) {
+      // ignore: a failed import leaves the active skin unchanged
+    }
+  }
+
   Future<void> _openSubWindow(SubWindowType type) async {
     final isEq = type == SubWindowType.eq;
     var controller = isEq ? _eqController : _plController;
@@ -264,6 +304,7 @@ class _WinampRootState extends State<WinampRoot> {
             shade: isEq ? _player.eqShade : _player.plShade,
             alwaysOnTop: _player.alwaysOnTop,
             uiScale: _player.uiScale,
+            skinName: _skins.active.name,
           ).encode(),
           hiddenAtLaunch: true,
         ),
@@ -329,6 +370,8 @@ class _WinampRootState extends State<WinampRoot> {
       case "setUIScale":
         final arguments = call.arguments as Map;
         _player.setUiScale((arguments["scale"] as num).toDouble());
+      case "importSkin":
+        await _importSkin();
     }
   }
 
@@ -356,45 +399,40 @@ class _WinampRootState extends State<WinampRoot> {
 
   @override
   Widget build(BuildContext context) {
-    return FutureBuilder<ClassicSkin>(
-      future: loadBaseSkin(),
-      builder: (context, snapshot) {
-        if (snapshot.hasError) {
-          return ColoredBox(
-            color: const Color(0xFF00FF00),
-            child: Center(child: Text("Skin load failed: ${snapshot.error}")),
-          );
-        }
-        if (!snapshot.hasData) {
-          return const ColoredBox(color: Colors.black);
-        }
-        return AnimatedBuilder(
-          animation: _player,
-          builder: (context, _) {
-            final scale = _player.uiScale;
-            final height =
-                (_player.windowShade ? _shadeSize : _mainSize).height;
-            return ColoredBox(
-              color: const Color(0xFF000000),
-              child: DragSurface(
-                draggable: _windowReady,
-                onWindowShadeToggle: _player.toggleWindowShade,
-                child: SizedBox(
-                  width: _mainSize.width * scale,
-                  height: height * scale,
-                  child: Transform.scale(
-                    scale: scale,
-                    alignment: Alignment.topLeft,
-                    filterQuality: FilterQuality.none,
-                    child: MainWindowView(
-                      skin: snapshot.data!,
-                      player: _player,
-                    ),
-                  ),
+    final skin = _skins.skin;
+    if (skin == null) {
+      return const ColoredBox(color: Colors.black);
+    }
+    if (_skins.lastError != null) {
+      return ColoredBox(
+        color: const Color(0xFF00FF00),
+        child: Center(child: Text("Skin load failed: ${_skins.lastError}")),
+      );
+    }
+    return AnimatedBuilder(
+      animation: Listenable.merge([_player, _skins]),
+      builder: (context, _) {
+        final scale = _player.uiScale;
+        final height = (_player.windowShade ? _shadeSize : _mainSize).height;
+        return ColoredBox(
+          color: const Color(0xFF000000),
+          child: DragSurface(
+            draggable: _windowReady,
+            onWindowShadeToggle: _player.toggleWindowShade,
+            child: SizedBox(
+              width: _mainSize.width * scale,
+              height: height * scale,
+              child: Transform.scale(
+                scale: scale,
+                alignment: Alignment.topLeft,
+                filterQuality: FilterQuality.none,
+                child: MainWindowView(
+                  skin: skin,
+                  player: _player,
                 ),
               ),
-            );
-          },
+            ),
+          ),
         );
       },
     );