feat: show duration in level selection + more robust simfile loader

lib/screens/level.dart

@@ -244,11 +244,7 @@ class _LevelState extends State<Level> with SingleTickerProviderStateMixin {
                 )),
           ),
           body: Stack(children: [
-            Arrows(
-                notes: notes,
-                position: _position != null
-                    ? _position!.inMilliseconds.toDouble()
-                    : 0.0),
+            Arrows(notes: notes),
             Positioned(
               top: 50,
               width: MediaQuery.of(context).size.width,

lib/screens/level_selection.dart

@@ -62,16 +62,24 @@ class _LevelSelectionState extends State<LevelSelection> {
     try {
       // List all files and folders in the directory
       List<Simfile> simfiles = directory
-          .listSync()
-          .where((entity) => FileSystemEntity.isDirectorySync(entity.path))
-          .map((entity) {
-        Simfile simfile = Simfile(entity.path);
-        simfile.load();
-        return simfile;
-      }).toList();
-      simfiles.sort((a, b) => a.tags['TITLE']!.compareTo(b.tags['TITLE']!));
+          .listSync(recursive: true)
+          .where((entity) => entity.path.endsWith('.sm'))
+          .map((entity) => Simfile(entity.path))
+          .toList();
 
-      return simfiles;
+      List<bool> successfullLoads =
+          await Future.wait(simfiles.map((simfile) => simfile.load()));
+      List<Simfile> simfilesFiltered = [];
+      for (int i = 0; i < simfiles.length; i++) {
+        if (successfullLoads[i]) {
+          simfilesFiltered.add(simfiles[i]);
+        }
+      }
+
+      simfilesFiltered
+          .sort((a, b) => a.tags['TITLE']!.compareTo(b.tags['TITLE']!));
+
+      return simfilesFiltered;
     } catch (e) {
       print("Error reading directory: $e");
       return [];

lib/utils/simfile.dart

@@ -1,5 +1,7 @@
 import 'dart:io';
 
+import 'package:audioplayers/audioplayers.dart';
+
 enum Difficulty { Beginner, Easy, Medium, Hard, Challenge, Edit }
 
 // These are the standard note values:
@@ -36,12 +38,13 @@ class Chart {
 }
 
 class Simfile {
-  String directoryPath;
-  String? simfilePath;
+  String? directoryPath;
+  String simfilePath;
   String? audioPath;
   String? bannerPath;
   String? lines;
 
+  Duration? duration;
   // tags of simfile
   Map<String, String> tags = {};
 
@@ -50,7 +53,7 @@ class Simfile {
   Map<double, double> bpms = {};
   double offset = 0;
 
-  Simfile(this.directoryPath);
+  Simfile(this.simfilePath);
 
   void _parseChart({required List<String> keys, required String value}) {
     Chart chart = Chart();
@@ -119,33 +122,41 @@ class Simfile {
     _parseChart(keys: keys, value: value);
   }
 
-  void load() {
-    simfilePath = Directory(directoryPath)
-        .listSync()
-        .firstWhere((entity) => entity.path.endsWith('.sm'),
-            orElse: () => File(''))
-        .path;
-
-    audioPath = Directory(directoryPath)
-        .listSync()
-        .firstWhere((entity) => entity.path.endsWith('.ogg'),
-            orElse: () => File(''))
-        .path;
-
-    bannerPath = Directory(directoryPath)
-        .listSync()
-        .firstWhere((file) => file.path.toLowerCase().endsWith('banner.png'),
-            orElse: () => File(''))
-        .path;
-
-    lines = File(simfilePath!).readAsStringSync();
+  Future<bool> load() async {
+    directoryPath = File(simfilePath).parent.path;
+    lines = File(simfilePath).readAsStringSync();
     
     RegExp commentsRegExp = RegExp(r'//.*$');
     lines = lines?.replaceAll(commentsRegExp, '');
     RegExp fieldDataRegExp = RegExp(r'#([^;]+):([^;]*);');
 
     for (final fieldData in fieldDataRegExp.allMatches(lines!)) {
-      _parseTag(fieldData);
+      try {
+        _parseTag(fieldData);
+      } catch (err) {
+        return false;
+      }
     }
+
+    String? musicFileName = tags["MUSIC"];
+    if (musicFileName == null) return false;
+    String? bannerFileName = tags["BANNER"];
+    if (bannerFileName == null) return false;
+
+    for (FileSystemEntity entity in Directory(directoryPath!).listSync()) {
+      if (entity.path.endsWith('.ogg')) {
+        audioPath = entity.path;
+      }
+      if (entity.path.endsWith('anner.png')) {
+        bannerPath = entity.path;
+      }
+    }
+
+    AudioPlayer audioplayer = AudioPlayer();
+    await audioplayer.setSource(DeviceFileSource(audioPath!));
+    duration = await audioplayer.getDuration();
+    audioplayer.dispose();
+
+    return true;
   }
 }

lib/widgets/arrows.dart

@@ -4,9 +4,8 @@ import 'package:sense_the_rhythm/widgets/arrow.dart';
 
 class Arrows extends StatelessWidget {
   final List<Note> notes;
-  final double position;
 
-  const Arrows({super.key, required this.notes, required this.position});
+  const Arrows({super.key, required this.notes});
 
   @override
   Widget build(BuildContext context) {

lib/widgets/level_info_chip.dart

@@ -0,0 +1,37 @@
+import 'package:flutter/material.dart';
+
+class LevelInfoChip extends StatelessWidget {
+  final String label;
+  final IconData icon;
+
+  const LevelInfoChip({super.key, required this.label, required this.icon});
+
+  @override
+  Widget build(BuildContext context) {
+    return OutlinedButton(
+      style: ButtonStyle(
+          shape: WidgetStateProperty.all(RoundedRectangleBorder(
+              borderRadius: BorderRadius.all(Radius.circular(5)))),
+          minimumSize: WidgetStateProperty.all(Size(10, 10)),
+          tapTargetSize: MaterialTapTargetSize.shrinkWrap,
+          padding: WidgetStateProperty.all(
+              EdgeInsets.symmetric(vertical: 4.0, horizontal: 5.0))
+          ),
+      onPressed: () {},
+      child: Row(children: [
+        Icon(
+          icon,
+          size: 16,
+        ),
+        SizedBox(width: 4),
+        Text(
+          label,
+          style: TextStyle(
+              fontSize: 14,
+              fontWeight:
+                  FontWeight.w200), // Adjust font size for smaller appearance
+        ),
+      ]),
+    );
+  }
+}

lib/widgets/level_list_entry.dart

@@ -6,6 +6,7 @@ import 'package:sense_the_rhythm/utils/simfile.dart';
 import 'package:sense_the_rhythm/screens/level.dart';
 import 'package:sense_the_rhythm/widgets/esense_connect_dialog.dart';
 import 'package:sense_the_rhythm/widgets/esense_not_connected_dialog.dart';
+import 'package:sense_the_rhythm/widgets/level_info_chip.dart';
 
 class LevelListEntry extends StatelessWidget {
   const LevelListEntry({
@@ -62,8 +63,27 @@ class LevelListEntry extends StatelessWidget {
     return ListTile(
       leading: Image.file(File(simfile.bannerPath!)),
       trailing: Icon(Icons.play_arrow),
-      title: Text(simfile.tags["TITLE"]!),
-      subtitle: Text('3:45'),
+      title: Text(
+        simfile.tags["TITLE"]!,
+        style: TextStyle(fontWeight: FontWeight.bold),
+      ),
+      subtitle: Padding(
+        padding: const EdgeInsets.only(bottom: 2),
+        child: Row(
+          spacing: 2,
+          children: [
+            LevelInfoChip(
+              label:
+                  '${simfile.duration!.inMinutes}:${simfile.duration!.inSeconds.remainder(60).toString().padLeft(2, "0")}',
+              icon: Icons.timer_outlined,
+            ),
+            LevelInfoChip(
+              label: '${simfile.bpms.entries.first.value.toInt()} BPM',
+              icon: Icons.graphic_eq,
+            ),
+          ],
+        ),
+      ),
       onTap: () {
         tapHandler(context);
       },