import icon pack

lib/about_page.dart

@@ -17,6 +17,7 @@
 import 'dart:convert';
 import 'dart:io';
 
+import 'package:file_picker/file_picker.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
@@ -29,6 +30,7 @@ import 'app/message.dart';
 import 'app/state.dart';
 import 'core/state.dart';
 import 'desktop/state.dart';
+import 'oath/state.dart';
 import 'version.dart';
 import 'widgets/choice_filter_chip.dart';
 import 'widgets/responsive_dialog.dart';
@@ -191,6 +193,36 @@ class AboutPage extends ConsumerWidget {
                 },
               ),
             ],
+
+            ... [
+              const SizedBox(height: 12.0,),
+              FilterChip(
+                label: const Text('Import icon pack'),
+                onSelected: (value) async {
+                  final result = await FilePicker.platform.pickFiles(
+                      allowedExtensions: ['zip'],
+                      type: FileType.custom,
+                      allowMultiple: false,
+                      lockParentWindow: true,
+                      dialogTitle: 'Choose icon pack');
+                  if (result != null && result.files.isNotEmpty) {
+                    final importStatus = await ref
+                        .read(issuerIconProvider)
+                        .importPack(result.paths.first!);
+
+                    await ref.read(withContextProvider)(
+                      (context) async {
+                        if (importStatus) {
+                          showMessage(context, 'Icon pack imported');
+                        } else {
+                          showMessage(context, 'Error importing icon pack');
+                        }
+                      },
+                    );
+                  }
+                },
+              ),
+            ]
           ],
         ),
       ),

lib/oath/issuer_icon_provider.dart

@@ -2,6 +2,7 @@ import 'dart:convert';
 import 'dart:developer';
 import 'dart:io';
 
+import 'package:archive/archive.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:logging/logging.dart';
@@ -128,6 +129,12 @@ class IssuerIconProvider {
 
     if (!await packFile.exists()) {
       _log.debug('Failed to find icons pack ${packFile.path}');
+      _issuerIconPack = IssuerIconPack(
+          uuid: '',
+          name: '',
+          version: 0,
+          directory: Directory(''),
+          icons: []);
       return;
     }
 
@@ -149,6 +156,91 @@ class IssuerIconProvider {
         'Parsed ${_issuerIconPack.name} with ${_issuerIconPack.icons.length} icons');
   }
 
+  Future<bool> _cleanTempDirectory(Directory tempDirectory) async {
+    if (await tempDirectory.exists()) {
+      await tempDirectory.delete(recursive: true);
+    }
+
+    if (await tempDirectory.exists()) {
+      _log.error('Failed to remove temp directory');
+      return false;
+    }
+
+    return true;
+  }
+
+  Future<bool> importPack(String filePath) async {
+
+    final packFile = File(filePath);
+    if (!await packFile.exists()) {
+      _log.error('Input file does not exist');
+      return false;
+    }
+
+    // copy input file to temporary folder
+    final documentsDirectory = await getApplicationDocumentsDirectory();
+    final tempDirectory = Directory('${documentsDirectory.path}${Platform.pathSeparator}temp${Platform.pathSeparator}');
+
+    if (!await _cleanTempDirectory(tempDirectory)) {
+      _log.error('Failed to cleanup temp directory');
+      return false;
+    }
+
+    await tempDirectory.create(recursive: true);
+    final tempCopy = await packFile.copy('${tempDirectory.path}${basename(packFile.path)}');
+    final bytes = await File(tempCopy.path).readAsBytes();
+
+    final destination = Directory('${tempDirectory.path}ex${Platform.pathSeparator}');
+
+    final archive = ZipDecoder().decodeBytes(bytes);
+    for (final file in archive) {
+      final filename = file.name;
+      if (file.isFile) {
+        final data = file.content as List<int>;
+        _log.debug('Writing file: ${destination.path}$filename');
+        final extractedFile = File('${destination.path}$filename');
+        final createdFile = await extractedFile.create(recursive: true);
+        await createdFile.writeAsBytes(data);
+      } else {
+        _log.debug('Writing directory: ${destination.path}$filename');
+        Directory('${destination.path}$filename')
+        .createSync(recursive: true);
+      }
+    }
+
+    // check that there is pack.json
+    final packJsonFile = File('${destination.path}pack.json');
+    if (!await packJsonFile.exists()) {
+      _log.error('File is not a icon pack.');
+      //await _cleanTempDirectory(tempDirectory);
+      return false;
+    }
+
+    // remove old icons pack and icon pack cache
+    final packDirectory = Directory(
+        '${documentsDirectory.path}${Platform.pathSeparator}issuer_icons${Platform.pathSeparator}');
+    if (!await _cleanTempDirectory(packDirectory)) {
+      _log.error('Could not remove old pack directory');
+      await _cleanTempDirectory(tempDirectory);
+      return false;
+    }
+
+    final packCacheDirectory = Directory(
+        '${documentsDirectory.path}${Platform.pathSeparator}issuer_icons_cache${Platform.pathSeparator}');
+    if (!await _cleanTempDirectory(packCacheDirectory)) {
+      _log.error('Could not remove old cache directory');
+      await _cleanTempDirectory(tempDirectory);
+      return false;
+    }
+
+
+    await destination.rename(packDirectory.path);
+    readPack('issuer_icons');
+
+    await _cleanTempDirectory(tempDirectory);
+    return true;
+  }
+
   VectorGraphic? issuerVectorGraphic(String issuer, Widget placeHolder) {
     final matching = _issuerIconPack.icons
         .where((element) => element.issuer.any((element) => element == issuer));

pubspec.lock

@@ -18,7 +18,7 @@ packages:
     source: hosted
     version: "5.5.0"
   archive:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: archive
       sha256: "80e5141fafcb3361653ce308776cfd7d45e6e9fbb429e14eec571382c0c5fecb"
@@ -217,6 +217,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.1.4"
+  file_picker:
+    dependency: "direct main"
+    description:
+      name: file_picker
+      sha256: d090ae03df98b0247b82e5928f44d1b959867049d18d73635e2e0bc3f49542b9
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.2.5"
   fixnum:
     dependency: transitive
     description:
@@ -248,6 +256,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_plugin_android_lifecycle:
+    dependency: transitive
+    description:
+      name: flutter_plugin_android_lifecycle
+      sha256: "60fc7b78455b94e6de2333d2f95196d32cf5c22f4b0b0520a628804cb463503b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.7"
   flutter_riverpod:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -57,6 +57,8 @@ dependencies:
   vector_graphics: ^1.0.1
   vector_graphics_compiler: ^1.0.1
   path: ^1.8.2
+  file_picker: ^5.2.5
+  archive: ^3.3.2
 
 dev_dependencies:
   integration_test: