nextcloud: Fix WebDav propfind depth

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

@@ -213,11 +213,13 @@ class WebDavClient {
   /// list the directories and files under given [remotePath].
   ///
   /// Optionally populates the given [prop]s on the returned files.
+  /// [depth] can be '0', '1' or 'infinity'.
   Future<WebDavMultistatus> ls(
     final String remotePath, {
     final WebDavPropfindProp? prop,
-    final int? depth,
+    final String? depth,
   }) async {
+    assert(depth == null || ['0', '1', 'infinity'].contains(depth), 'Depth has to be 0, 1 or infinity');
     final response = await _send(
       'PROPFIND',
       _constructPath(remotePath),
@@ -231,7 +233,7 @@ class WebDavClient {
       ),
       headers: {
         if (depth != null) ...{
-          'Depth': depth.toString(),
+          'Depth': depth,
         },
       },
     );

packages/nextcloud/test/webdav.dart

@@ -55,6 +55,15 @@ Future run(final DockerImage image) async {
       expect(props.ocsize, 50598);
     });
 
+    test('List directory recursively', () async {
+      final responses = (await client.webdav.ls(
+        '/',
+        depth: 'infinity',
+      ))
+          .responses;
+      expect(responses, hasLength(37));
+    });
+
     test('Create directory', () async {
       final response = await client.webdav.mkdir('test');
       expect(response.statusCode, equals(201));
@@ -229,7 +238,6 @@ Future run(final DockerImage image) async {
           ocssharepermissions: true,
           ocmsharepermissions: true,
         ),
-        depth: 0,
       ))
           .responses
           .single
@@ -276,7 +284,7 @@ Future run(final DockerImage image) async {
           davgetlastmodified: true,
           ocsize: true,
         ),
-        depth: 0,
+        depth: '0',
       ))
           .responses
           .single
@@ -339,7 +347,6 @@ Future run(final DockerImage image) async {
           nccreationtime: true,
           ncuploadtime: true,
         ),
-        depth: 0,
       ))
           .responses
           .single