fix(nextcloud): Fix WebDAV path construction

Signed-off-by: jld3103 <jld3103yt@gmail.com>

packages/nextcloud/lib/src/webdav/client.dart

@@ -10,7 +10,7 @@ import 'package:universal_io/io.dart';
 import 'package:xml/xml.dart' as xml;
 
 /// Base path used on the server
-const String webdavBasePath = '/remote.php/webdav';
+final webdavBase = Uri(path: '/remote.php/webdav');
 
 /// WebDavClient class
 class WebDavClient {
@@ -65,20 +65,11 @@ class WebDavClient {
   @visibleForTesting
   // ignore: public_member_api_docs
   static Uri constructUri(final Uri baseURL, [final Uri? path]) {
-    assert(
-      path == null || path.path == '/' || !path.path.startsWith('/'),
-      "The path should not start a '/' unless indicating the root folder.",
-    );
-    assert(!baseURL.path.endsWith('/'), "The baseURL should not end with a '/'.");
-
-    final pathBuffer = StringBuffer(baseURL.path)..write(webdavBasePath);
-    if (path != null && path.path != '/') {
-      pathBuffer
-        ..write('/')
-        ..write(path.path);
+    final segments = baseURL.pathSegments.toList()..addAll(webdavBase.pathSegments);
+    if (path != null) {
+      segments.addAll(path.pathSegments);
     }
-
-    return baseURL.replace(path: pathBuffer.toString());
+    return baseURL.replace(pathSegments: segments.where((final s) => s.isNotEmpty));
   }
 
   Future<WebDavMultistatus> _parseResponse(final HttpClientResponse response) async =>

packages/nextcloud/lib/src/webdav/file.dart

@@ -25,8 +25,8 @@ class WebDavFile {
       _response.propstats.singleWhere((final propstat) => propstat.status.contains('200')).prop;
 
   /// The path of file
-  late final String path =
-      Uri.decodeFull(_response.href!.substring(Uri.encodeFull(webdavBasePath).length, _response.href!.length));
+  late final Uri path =
+      Uri(pathSegments: Uri(path: _response.href).pathSegments.sublist(webdavBase.pathSegments.length));
 
   /// The fileid namespaced by the instance id, globally unique
   late final String? id = props.ocid;
@@ -79,17 +79,11 @@ class WebDavFile {
   late final bool? hasPreview = props.nchaspreview;
 
   /// Returns the decoded name of the file / folder without the whole path
-  late final String name = () {
-    // normalized path (remove trailing slash)
-    final end = path.endsWith('/') ? path.length - 1 : path.length;
-    final segments = Uri.parse(path, 0, end).pathSegments;
-
-    return segments.lastOrNull ?? '';
-  }();
+  late final String name = path.pathSegments.where((final s) => s.isNotEmpty).lastOrNull ?? '';
 
   /// Whether the file is hidden.
   late final bool isHidden = name.startsWith('.');
 
   /// Whether the file is a directory
-  late final bool isDirectory = (isCollection ?? false) || path.endsWith('/');
+  late final bool isDirectory = (isCollection ?? false) || path.pathSegments.last.isEmpty;
 }

packages/nextcloud/test/webdav_test.dart

@@ -9,18 +9,25 @@ import 'package:universal_io/io.dart';
 import 'helper.dart';
 
 void main() {
-  test('constructUri', () {
-    var baseURL = Uri.parse('http://cloud.example.com');
-    expect(WebDavClient.constructUri(baseURL).toString(), '$baseURL$webdavBasePath');
-    expect(WebDavClient.constructUri(baseURL, Uri(path: '/')).toString(), '$baseURL$webdavBasePath');
-    expect(WebDavClient.constructUri(baseURL, Uri(path: 'test')).toString(), '$baseURL$webdavBasePath/test');
-
-    baseURL = Uri.parse('http://cloud.example.com/subdir');
-    expect(WebDavClient.constructUri(baseURL, Uri(path: 'test')).toString(), '$baseURL$webdavBasePath/test');
-
-    expect(() => WebDavClient.constructUri(baseURL, Uri(path: '/test')), throwsA(isA<AssertionError>()));
-    baseURL = Uri.parse('http://cloud.example.com/');
-    expect(() => WebDavClient.constructUri(baseURL), throwsA(isA<AssertionError>()));
+  group('constructUri', () {
+    for (final values in [
+      ('http://cloud.example.com', 'http://cloud.example.com'),
+      ('http://cloud.example.com/', 'http://cloud.example.com'),
+      ('http://cloud.example.com/subdir', 'http://cloud.example.com/subdir'),
+      ('http://cloud.example.com/subdir/', 'http://cloud.example.com/subdir'),
+    ]) {
+      final baseURL = Uri.parse(values.$1);
+      final sanitizedBaseURL = Uri.parse(values.$2);
+
+      test('$baseURL', () {
+        expect(WebDavClient.constructUri(baseURL).toString(), '$sanitizedBaseURL$webdavBase');
+        expect(WebDavClient.constructUri(baseURL, Uri(path: '/')).toString(), '$sanitizedBaseURL$webdavBase');
+        expect(WebDavClient.constructUri(baseURL, Uri(path: 'test')).toString(), '$sanitizedBaseURL$webdavBase/test');
+        expect(WebDavClient.constructUri(baseURL, Uri(path: 'test/')).toString(), '$sanitizedBaseURL$webdavBase/test');
+        expect(WebDavClient.constructUri(baseURL, Uri(path: '/test')).toString(), '$sanitizedBaseURL$webdavBase/test');
+        expect(WebDavClient.constructUri(baseURL, Uri(path: '/test/')).toString(), '$sanitizedBaseURL$webdavBase/test');
+      });
+    }
   });
 
   group(
@@ -100,7 +107,7 @@ void main() {
             .toWebDavFiles()
             .single;
 
-        expect(response.path, '/Nextcloud.png');
+        expect(response.path, Uri(path: 'Nextcloud.png'));
         expect(response.id, isNotEmpty);
         expect(response.fileId, isNotEmpty);
         expect(response.isCollection, isFalse);
@@ -165,7 +172,7 @@ void main() {
             .toWebDavFiles()
             .single;
 
-        expect(response.path, '/test/');
+        expect(response.path, Uri(path: 'test/'));
         expect(response.isCollection, isTrue);
         expect(response.mimeType, isNull);
         expect(response.size, data.lengthInBytes);