improve pgn loading speeds (#3188)

lib/src/view/analysis/pgn_games_list_screen.dart

@@ -24,9 +24,9 @@ typedef _GameData = ({
 class PgnGamesListScreen extends StatefulWidget {
   const PgnGamesListScreen({required this.games, super.key});
 
-  final IList<PgnGame> games;
+  final IList<PgnLazyGame> games;
 
-  static Route<dynamic> buildRoute(IList<PgnGame> games) {
+  static Route<dynamic> buildRoute(IList<PgnLazyGame> games) {
     return buildScreenRoute(screen: PgnGamesListScreen(games: games));
   }
 
@@ -113,22 +113,22 @@ class _PgnGamesListScreenState extends State<PgnGamesListScreen> {
         separatorBuilder: (context, index) =>
             const Divider(height: 1, thickness: 1, indent: 16, endIndent: 16),
         itemBuilder: (context, index) {
-          final game = widget.games[filteredIndices[index]];
           final gameData = _gameData[filteredIndices[index]];
           return ListTile(
             title: Text(gameData.title, maxLines: 2, overflow: .ellipsis),
             subtitle: Text(gameData.subtitle, overflow: .ellipsis, maxLines: 1),
             onTap: () {
+              final game = widget.games[filteredIndices[index]];
               Navigator.of(context, rootNavigator: true).push(
                 AnalysisScreen.buildRoute(
                   AnalysisOptions.pgn(
                     // TODO generate unique id for each game, maybe based on the PGN headers?
                     id: const StringId('pgn_import_game'),
                     orientation: .white,
-                    pgn: game.makePgn(),
+                    pgn: game.rawPgn,
                     variant: gameData.variant,
                     isComputerAnalysisAllowed: true,
-                    initialMoveCursor: game.moves.mainline().isEmpty ? 0 : 1,
+                    initialMoveCursor: 1,
                   ),
                 ),
               );
@@ -148,7 +148,7 @@ bool _matchesSearchQuery(_GameData gameData, String query) {
       gameData.subtitle.toLowerCase().contains(lowerQuery);
 }
 
-String _buildGameSubtitle(PgnGame game) {
+String _buildGameSubtitle(PgnLazyGame game) {
   final event = game.headers['Event'];
   final round = game.headers['Round'];
   final site = game.headers['Site'];

lib/src/view/more/import_pgn_screen.dart

@@ -31,7 +31,7 @@ class ImportPgnScreen extends StatelessWidget {
 
   static void handlePgnText(BuildContext context, String text) {
     try {
-      final games = PgnGame.parseMultiGamePgn(text);
+      final games = PgnGame.parseMultiGameLazy(text);
 
       if (games.isEmpty) {
         showSnackBar(context, context.l10n.invalidPgn, type: .error);
@@ -49,7 +49,7 @@ class ImportPgnScreen extends StatelessWidget {
               orientation: .white,
               pgn: text,
               isComputerAnalysisAllowed: true,
-              initialMoveCursor: game.moves.mainline().isEmpty ? 0 : 1,
+              initialMoveCursor: 1,
               variant: rule != null ? Variant.fromRule(rule) : .standard,
             ),
           ),

pubspec.lock

@@ -310,10 +310,10 @@ packages:
     dependency: "direct main"
     description:
       name: dartchess
-      sha256: "0f2413624840484c1c316dbbbea7d777c83f7dccb8b8b00e5ca55c2058d2fa23"
+      sha256: d1750f765be1c81bbd529413e4bf4804dd9814a871cbce5f427cb4d1e7a3ae7a
       url: "https://pub.dev"
     source: hosted
-    version: "0.13.0"
+    version: "0.13.1"
   dbus:
     dependency: transitive
     description:

pubspec.yaml

@@ -25,7 +25,7 @@ dependencies:
   crypto: ^3.0.7
   cupertino_http: ^2.4.0
   cupertino_icons: ^1.0.9
-  dartchess: ^0.13.0
+  dartchess: ^0.13.1
   deep_pick: ^1.1.0
   device_info_plus: ^13.1.0
   dynamic_system_colors: