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Fix download: fetch file with auth header, create blob for proper download

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This commit is contained in:
Leon Bösche
2026-01-13 23:10:47 +01:00
parent 46dd299229
commit bc9c7a06c8
1 changed files with 33 additions and 8 deletions
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41
b0esche_cloud/lib/pages/file_explorer.dart
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@@ -1,9 +1,11 @@
import 'dart:ui';
import 'dart:js_interop';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:file_picker/file_picker.dart' hide FileType;
import 'package:path/path.dart' as p;
import 'package:web/web.dart' as web;
import 'package:http/http.dart' as http;
import '../blocs/file_browser/file_browser_bloc.dart';
import '../blocs/file_browser/file_browser_event.dart';
import '../blocs/file_browser/file_browser_state.dart';
@@ -303,14 +305,14 @@ class _FileExplorerState extends State<FileExplorer> {
const SizedBox(width: 12),
Expanded(
child: Text(
'Preparing download: ${file.name}',
'Downloading: ${file.name}',
overflow: TextOverflow.ellipsis,
style: const TextStyle(color: AppTheme.primaryText),
),
),
],
),
duration: const Duration(seconds: 3),
duration: const Duration(days: 1), // Keep showing until dismissed
backgroundColor: AppTheme.primaryBackground,
),
);
@@ -335,15 +337,38 @@ class _FileExplorerState extends State<FileExplorer> {
file.path,
);
// Build full URL with token for authentication (anchor elements can't send headers)
final fullUrl =
'${fileService.baseUrl}$downloadUrl&token=${Uri.encodeComponent(token)}';
// Build full URL
final fullUrl = '${fileService.baseUrl}$downloadUrl';
// Trigger download via anchor element
// Fetch file with authentication header
final response = await http.get(
Uri.parse(fullUrl),
headers: {'Authorization': 'Bearer $token'},
);
if (response.statusCode != 200) {
throw Exception('Failed to download: ${response.statusCode}');
}
// Create blob and trigger download
final bytes = response.bodyBytes;
final blob = web.Blob(
[bytes.toJS].toJS,
web.BlobPropertyBag(type: response.headers['content-type'] ?? 'application/octet-stream'),
);
final blobUrl = web.URL.createObjectURL(blob);
// Create anchor and trigger download
final anchor = web.HTMLAnchorElement()
..href = fullUrl
..download = file.name;
..href = blobUrl
..download = file.name
..style.display = 'none';
web.document.body?.appendChild(anchor);
anchor.click();
// Cleanup
web.document.body?.removeChild(anchor);
web.URL.revokeObjectURL(blobUrl);
// Dismiss preparing snackbar and show success
snackController?.close();