[feat]: Add download speed and progress details to downloads

lib/providers/download_provider.dart

@@ -19,6 +19,9 @@ class DownloadInfo {
   final double progress;
   final String? filePath;
   final String? error;
+  final int bytesDownloaded;
+  final int totalBytes;
+  final double downloadSpeed; // bytes per second
 
   const DownloadInfo({
     required this.packageName,
@@ -27,6 +30,9 @@ class DownloadInfo {
     this.progress = 0.0,
     this.filePath,
     this.error,
+    this.bytesDownloaded = 0,
+    this.totalBytes = 0,
+    this.downloadSpeed = 0.0,
   });
 
   DownloadInfo copyWith({
@@ -34,6 +40,9 @@ class DownloadInfo {
     double? progress,
     String? filePath,
     String? error,
+    int? bytesDownloaded,
+    int? totalBytes,
+    double? downloadSpeed,
   }) {
     return DownloadInfo(
       packageName: packageName,
@@ -42,10 +51,25 @@ class DownloadInfo {
       progress: progress ?? this.progress,
       filePath: filePath ?? this.filePath,
       error: error ?? this.error,
+      bytesDownloaded: bytesDownloaded ?? this.bytesDownloaded,
+      totalBytes: totalBytes ?? this.totalBytes,
+      downloadSpeed: downloadSpeed ?? this.downloadSpeed,
     );
   }
 
   String get key => '${packageName}_$versionName';
+
+  String get formattedBytesDownloaded => _formatBytes(bytesDownloaded);
+  String get formattedTotalBytes => _formatBytes(totalBytes);
+  String get formattedSpeed => '${_formatBytes(downloadSpeed.toInt())}/s';
+
+  static String _formatBytes(int bytes) {
+    if (bytes < 1024) return '$bytes B';
+    if (bytes < 1024 * 1024) return '${(bytes / 1024).toStringAsFixed(1)} KB';
+    if (bytes < 1024 * 1024 * 1024)
+      return '${(bytes / (1024 * 1024)).toStringAsFixed(1)} MB';
+    return '${(bytes / (1024 * 1024 * 1024)).toStringAsFixed(2)} GB';
+  }
 }
 
 class DownloadProvider extends ChangeNotifier {
@@ -197,13 +221,39 @@ class DownloadProvider extends ChangeNotifier {
       maxProgress: 100,
     );
 
+    // Track download speed with 5-second sampling intervals
+    int lastSpeedBytes = 0;
+    DateTime lastSpeedTime = DateTime.now();
+    double currentSpeed = 0.0;
+
     try {
       final filePath = await _apiService.downloadApk(
         version,
         app.packageName,
         app.repositoryUrl,
-        onProgress: (progress) {
-          _downloads[key] = _downloads[key]!.copyWith(progress: progress);
+        onProgress: (received, total) {
+          final now = DateTime.now();
+          final timeSinceLastSpeedUpdate =
+              now.difference(lastSpeedTime).inMilliseconds / 1000.0;
+
+          // Update speed every 5 seconds for smoother display
+          if (timeSinceLastSpeedUpdate >= 1.0) {
+            final bytesDiff = received - lastSpeedBytes;
+            if (timeSinceLastSpeedUpdate > 0) {
+              currentSpeed = bytesDiff / timeSinceLastSpeedUpdate;
+            }
+            lastSpeedBytes = received;
+            lastSpeedTime = now;
+          }
+
+          final progress = total > 0 ? received / total : 0.0;
+
+          _downloads[key] = _downloads[key]!.copyWith(
+            progress: progress,
+            bytesDownloaded: received,
+            totalBytes: total,
+            downloadSpeed: currentSpeed,
+          );
           notifyListeners();
 
           // Update notification with progress

lib/screens/app_details_screen.dart

@@ -803,12 +803,33 @@ class _DownloadSectionState extends State<_DownloadSection> {
             ),
             if (isDownloading) ...[
               const SizedBox(height: 16),
-              Text(
-                'Downloading... ${(progress * 100).toInt()}%',
-                style: Theme.of(context).textTheme.bodySmall?.copyWith(
-                  color: Theme.of(context).colorScheme.onSurfaceVariant,
-                ),
+              Row(
+                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                children: [
+                  Text(
+                    'Downloading... ${(progress * 100).toInt()}%',
+                    style: Theme.of(context).textTheme.bodySmall?.copyWith(
+                      color: Theme.of(context).colorScheme.onSurfaceVariant,
+                    ),
+                  ),
+                  if (downloadInfo != null && downloadInfo.totalBytes > 0)
+                    Text(
+                      '${downloadInfo.formattedBytesDownloaded} / ${downloadInfo.formattedTotalBytes}',
+                      style: Theme.of(context).textTheme.bodySmall?.copyWith(
+                        color: Theme.of(context).colorScheme.onSurfaceVariant,
+                      ),
+                    ),
+                ],
               ),
+              const SizedBox(height: 4),
+              if (downloadInfo != null)
+                Text(
+                  downloadInfo.formattedSpeed,
+                  style: Theme.of(context).textTheme.bodySmall?.copyWith(
+                    color: Theme.of(context).colorScheme.primary,
+                    fontWeight: FontWeight.w600,
+                  ),
+                ),
               const SizedBox(height: 8),
               LinearProgressIndicator(value: progress, year2023: false),
             ],

lib/screens/repositories_screen.dart

@@ -101,11 +101,7 @@ class _RepositoriesScreenState extends State<RepositoriesScreen> {
                   child: Column(
                     crossAxisAlignment: CrossAxisAlignment.start,
                     children: [
-                      Text(
-                        'Presets',
-                        style: Theme.of(context).textTheme.titleSmall,
-                      ),
-                      const SizedBox(height: 8),
+                      MListHeader(title: 'Preset'),
                       MListViewBuilder(
                         itemCount: _presets.length,
                         itemBuilder: (index) {
@@ -181,9 +177,6 @@ class _RepositoriesScreenState extends State<RepositoriesScreen> {
                           );
                         },
                       ),
-                      const SizedBox(height: 8),
-                      const Divider(),
-                      const SizedBox(height: 8),
                     ],
                   ),
                 ),

lib/services/fdroid_api_service.dart

@@ -518,7 +518,7 @@ class FDroidApiService {
     FDroidVersion version,
     String packageName,
     String repositoryUrl, {
-    Function(double)? onProgress,
+    Function(int received, int total)? onProgress,
     CancelToken? cancelToken,
   }) async {
     try {
@@ -549,7 +549,7 @@ class FDroidApiService {
         filePath,
         onReceiveProgress: (received, total) {
           if (total > 0 && onProgress != null) {
-            onProgress(received / total);
+            onProgress(received, total);
           }
         },
         cancelToken: token,