Frontend: unify PDF viewer to use network URL like internal viewer, remove bytes loading hack

b0esche_cloud/lib/pages/public_file_viewer.dart

@@ -26,7 +26,6 @@ class _PublicFileViewerState extends State<PublicFileViewer> {
   String? _error;
   Map<String, dynamic>? _fileData;
   VideoPlayerController? _videoController;
-  List<int>? _pdfBytes;
   String? _videoViewType;
 
   @override
@@ -51,11 +50,6 @@ class _PublicFileViewerState extends State<PublicFileViewer> {
         _isLoading = false;
       });
 
-      // Load PDF bytes if it's a PDF file
-      if (_isPdfFile()) {
-        await _loadPdfBytes();
-      }
-
       // Initialize video player if it's a video file
       if (_isVideoFile()) {
         await _initializeVideoPlayer();
@@ -68,28 +62,6 @@ class _PublicFileViewerState extends State<PublicFileViewer> {
     }
   }
 
-  Future<void> _loadPdfBytes() async {
-    if (_fileData?['viewUrl'] != null) {
-      try {
-        final apiClient = getIt<ApiClient>();
-        // Extract the path from viewUrl and call it directly
-        final viewUrl = _fileData!['viewUrl'] as String;
-        final uri = Uri.parse(viewUrl);
-        final path = uri.path + (uri.query.isNotEmpty ? '?${uri.query}' : '');
-
-        final bytes = await apiClient.getBytes(path);
-        setState(() {
-          _pdfBytes = bytes;
-        });
-      } catch (e) {
-        // If loading fails, we'll show an error or fallback
-        setState(() {
-          _error = 'Failed to load PDF content.';
-        });
-      }
-    }
-  }
-
   Future<void> _initializeVideoPlayer() async {
     if (!kIsWeb) {
       // For mobile, use VideoPlayerController
@@ -184,35 +156,20 @@ class _PublicFileViewerState extends State<PublicFileViewer> {
     if (viewUrl == null) return const SizedBox();
 
     if (_isPdfFile()) {
-      if (_pdfBytes != null) {
       return Expanded(
-          child: SfPdfViewer.memory(
+        child: SfPdfViewer.network(
-            Uint8List.fromList(_pdfBytes!),
+          viewUrl,
+          onDocumentLoadFailed: (details) {
+            setState(() {
+              _error = 'Failed to load PDF: ${details.description}';
+            });
+          },
           canShowScrollHead: false,
           canShowScrollStatus: false,
           enableDoubleTapZooming: true,
           enableTextSelection: false,
         ),
       );
-      } else if (_error != null) {
-        return Expanded(
-          child: Center(
-            child: Text(
-              _error!,
-              style: TextStyle(color: AppTheme.primaryText),
-              textAlign: TextAlign.center,
-            ),
-          ),
-        );
-      } else {
-        return const Expanded(
-          child: Center(
-            child: CircularProgressIndicator(
-              valueColor: AlwaysStoppedAnimation<Color>(AppTheme.accentColor),
-            ),
-          ),
-        );
-      }
     } else if (_isVideoFile()) {
       if (kIsWeb && _videoViewType != null) {
         // Use HTML video element for web