dc/573 metadata web app

CHANGELOG.md

@@ -19,6 +19,7 @@ Visit the package at [pub.dev](https://pub.dev/packages/solidpod).
 
 ## 0.10 Complete UI migrations - SecurityKey and Persmissions
 
++ Delete file by URL
 + Add fetch resource metadata function [0.9.20 20260131 anushkavid]
 + Refactor constants, security, and reactivity [0.9.19 20260131 miduo]
 + Update permission table to list [0.9.18 20260129 jesscmoore]

example/pubspec.yaml

@@ -25,7 +25,7 @@ dependency_overrides:
   solidui:
     git:
       url: https://github.com/anusii/solidui
-      ref: jess/190_ui_const_for_perm_history # dev
+      ref: dev
 
 dev_dependencies:
   flutter_lints: ^6.0.0

lib/src/solid/api/rest_api.dart

@@ -579,7 +579,9 @@ Future<ResourceMetadata> getResourceMetadata(String resourceUrl) async {
       contentType: response.headers[contentType]!,
       lastModified: dateFormatter.parseUtc(response.headers[lastModified]!),
       eTag: response.headers[eTag]!,
-      lastAccessed: dateFormatter.parseUtc(response.headers[lastAccessed]!),
+      lastAccessed: response.headers.containsKey(lastAccessed)
+          ? dateFormatter.parseUtc(response.headers[lastAccessed]!)
+          : null,
       acceptPatch: response.headers[acceptPatch]!,
       wacAllow: response.headers[wacAllow]!
           .replaceAll('user=', '')

lib/src/solid/common_func.dart

@@ -86,7 +86,7 @@ Future<void> deleteDataFileDialog(
             actions: [
               ElevatedButton(
                 onPressed: () async {
-                  await deleteFile(filePath, contentType: contentType);
+                  await deleteFile(fileUrl: fileUrl, contentType: contentType);
                   if (context.mounted) {
                     Navigator.pop(context);
                     ScaffoldMessenger.of(context).showSnackBar(

lib/src/solid/utils/misc.dart

@@ -553,7 +553,7 @@ Future<void> deleteAclForResource(String resourceUrl) async {
 }
 
 /// Delete a file and its associated resources, after first revoking
-/// external access to the file. The file with path [filePath],
+/// external access to the file. The file with URL [fileUrl],
 /// its ACL file, and its encryption key (if exists) will be deleted.
 /// The permission logs of any recipients to the file, will also be
 /// updated with a log line recording that permissions have been
@@ -562,23 +562,24 @@ Future<void> deleteAclForResource(String resourceUrl) async {
 ///
 /// Arguments:
 ///
-/// - [filePath] - path of file to be deleted. Where [filePath] is the
-/// app data directory and the filename.
+/// - [fileUrl] - URL of file to be deleted.
 /// - [contentType] - the type of content of the resource. Default:
 /// [ResourceContentType.turtleText].
 /// - [isKey] - flag describing whether the file to be deleted is a
 /// security key. Use this flag if file is a security key to avoid
 /// unnecessary operations that are not needed to delete a key.
 
-Future<void> deleteFile(
-  String filePath, {
+Future<void> deleteFile({
+  required String fileUrl,
   ResourceContentType contentType = ResourceContentType.turtleText,
   bool isKey = false,
 }) async {
-  final fileUrl = await getFileUrl(filePath);
   if (await isFileProtected(fileUrl)) {
     throw Exception('Delete protected file is not allowed');
   }
+
+  final filePath = await extractResourcePathFromUrl(fileUrl);
+
   if (!isKey) {
     // File to be deleted != key => perform all steps
 
@@ -591,7 +592,11 @@ Future<void> deleteFile(
     await revokePermissionToRecipients(fileName: filePath);
 
     await deleteResource(fileUrl, contentType);
-    await deleteAclForResource(fileUrl);
+
+    // dc 20260206: ACL file seems to be deleted by the POD server
+    // when the file is deleted
+    //
+    // await deleteAclForResource(fileUrl);
     await KeyManager.removeIndividualKey(resourcePath: filePath);
   } else {
     // File to be deleted == key => perform delete only
@@ -607,7 +612,7 @@ Future<void> deleteExternalFile(
   ResourceContentType contentType = ResourceContentType.turtleText,
 }) async {
   await deleteResource(fileUrl, contentType);
-  await deleteAclForResource(fileUrl);
+  // await deleteAclForResource(fileUrl);
   await KeyManager.removeSharedIndividualKey(fileUrl);
 
   /// av: Need to add the funtionality to remove the log line from permission

lib/src/solid/utils/res_metadata.dart

@@ -41,7 +41,13 @@ class ResourceMetadata {
   final DateTime lastModified;
 
   // The date and time at which the message originate
-  final DateTime lastAccessed;
+  //
+  // dc 20260202: Make the property nullable, as the
+  // property corresponds to the `date` field of the
+  // HTTP HEAD response headers. However, `date` may
+  // not exist if the request is from a web app.
+
+  DateTime? lastAccessed;
 
   // A unique string identifying the version of the resource
   final String eTag;