feat: import/export data

closes #25

lib/api/wallet_manager.dart

@@ -1,6 +1,10 @@
 import 'dart:convert';
 import 'dart:io';
 
+import 'package:archive/archive_io.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter_file_dialog/flutter_file_dialog.dart';
+import 'package:intl/intl.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:prasule/api/wallet.dart';
 import 'package:prasule/main.dart';
@@ -41,6 +45,126 @@ class WalletManager {
     }
   }
 
+  /// Creates a ZIP archive from all wallets
+  static Future<void> exportAllWallets() async {
+    if (kIsWeb) {
+      // TODO
+      return;
+    }
+
+    final archive = Archive();
+    for (final w in Directory(
+      "${(await getApplicationDocumentsDirectory()).path}/wallets",
+    ).listSync()) {
+      if (w is! File) continue;
+      logger.i("Zipping ${w.path.split("/").last}");
+      final wf = w;
+      archive.addFile(
+        ArchiveFile.stream(
+          wf.path.split("/").last,
+          wf.lengthSync(),
+          InputFileStream(wf.path),
+        ),
+      );
+    }
+    if (!await FlutterFileDialog.isPickDirectorySupported()) {
+      File(
+        "${(await getApplicationDocumentsDirectory()).path}/export_${DateFormat("dd_MM_yyyy").format(DateTime.now())}.zip",
+      ).writeAsBytesSync(ZipEncoder().encode(archive) ?? []);
+      return;
+    }
+    final dir = await FlutterFileDialog.pickDirectory();
+    if (dir == null) return;
+    await FlutterFileDialog.saveFileToDirectory(
+      directory: dir,
+      data: Uint8List.fromList(ZipEncoder().encode(archive) ?? []),
+      fileName: "export_${DateFormat("dd_MM_yyyy").format(DateTime.now())}.zip",
+      mimeType: "application/zip",
+    );
+  }
+
+  /// Exports a single [Wallet]
+  static Future<void> exportWallet({Wallet? wallet, String? name}) async {
+    if (wallet == null && name == null) {
+      throw Exception("You need to specify either a wallet or a name");
+    }
+    final n = name ?? wallet!.name;
+
+    if (!await FlutterFileDialog.isPickDirectorySupported()) {
+      File("${(await getApplicationDocumentsDirectory()).path}/wallets/$n")
+          .copySync(
+        "${await getApplicationDocumentsDirectory()}/export_${n.replaceAll(RegExp('[|\\?*<":>+\[\]/\' ]+'), '_')}_${DateFormat("dd_MM_yyyy").format(DateTime.now())}.json",
+      );
+      return;
+    }
+    final dir = await FlutterFileDialog.pickDirectory();
+    if (dir == null) return;
+    await FlutterFileDialog.saveFileToDirectory(
+      directory: dir,
+      data:
+          File("${(await getApplicationDocumentsDirectory()).path}/wallets/$n")
+              .readAsBytesSync(),
+      fileName:
+          "export_${n.replaceAll(RegExp('[|\\?*<":>+\[\]/\' ]+'), '_')}_${DateFormat("dd_MM_yyyy").format(DateTime.now())}.json",
+      mimeType: "application/json",
+    );
+  }
+
+  /// Import a single wallet
+  static Future<void> importWallet({String? data}) async {
+    var d = data ?? "";
+    if (data == null) {
+      final filePath = await FlutterFileDialog.pickFile(
+        params: const OpenFileDialogParams(
+          mimeTypesFilter: ["application/json"],
+          fileExtensionsFilter: ["json"],
+        ),
+      );
+      if (filePath == null) return;
+      d = File(filePath).readAsStringSync();
+    }
+    final w = Wallet.fromJson(jsonDecode(d) as Map<String, dynamic>);
+    if (await WalletManager.exists(w.name)) {
+      throw Exception("Wallet already exists!");
+    }
+    await WalletManager.saveWallet(
+      w,
+    );
+  }
+
+  /// Imports wallets from a ZIP archive
+  static Future<void> importArchive() async {
+    final filePath = await FlutterFileDialog.pickFile(
+      params: const OpenFileDialogParams(
+        mimeTypesFilter: ["application/zip"],
+        fileExtensionsFilter: ["zip"],
+      ),
+    );
+    if (filePath == null) return;
+    if (kIsWeb) {
+      // TODO
+      return;
+    }
+    final temp = Directory("${(await getTemporaryDirectory()).path}/data");
+    if (temp.existsSync()) {
+      temp.deleteSync();
+    }
+    temp.createSync(recursive: true);
+    final archive = ZipDecoder().decodeBuffer(InputFileStream(filePath));
+    for (final file in archive.files) {
+      if (!file.isFile) {
+        logger.d(file.name);
+        continue;
+      }
+      file.writeContent(OutputFileStream("${temp.path}/${file.name}"));
+    }
+    for (final e in temp.listSync()) {
+      logger.d(e.path);
+      if (e is! File) continue;
+      await importWallet(data: e.readAsStringSync());
+    }
+  }
+
   /// Loads and returns a single [Wallet] by name
   static Future<Wallet> loadWallet(String name) async {
     final path =
@@ -76,4 +200,11 @@ class WalletManager {
         Directory("${(await getApplicationDocumentsDirectory()).path}/wallets");
     File("${path.path}/${w.name}").deleteSync();
   }
+
+  /// Checks if the wallet exists
+  static Future<bool> exists(String name) async {
+    return File(
+      "${(await getApplicationDocumentsDirectory()).path}/wallets/$name",
+    ).existsSync();
+  }
 }

lib/l10n/app_cs.arb

@@ -91,5 +91,18 @@
     "evenMoney":"Váš stav je stejný jako minulý měsíc.",
     "balanceStatusA": "Váš stav je ",
     "balanceStatusB": " oproti minulému měsíci.",
-    "searchLabel":"Prohledat záznamy..."
+    "searchLabel":"Prohledat záznamy...",
+    "exportSingle":"Exportovat peněženku",
+    "exportSingleDesc":"Uloží vybranou peněženku do složky Stažené",
+    "exportArchive":"Exportovat archiv",
+    "exportArchiveDesc":"Exportuje všechny peněženky do archivu do složky Stažené",
+    "importSingle":"Importovat peněženku",
+    "importSingleDesc":"Importuje jednu peněženku ze souboru",
+    "importArchive":"Importovat archiv",
+    "importArchiveDesc":"Importuje všechny nepoškozené peněženky z archivu",
+    "settingsData":"Data",
+    "selectExportWallet":"Zvolte peněženku k exportování",
+    "exportError":"Při exportování peněženky nastala chyba",
+    "exportCompleted":"Export dokončen",
+    "importCompleted":"Import dokončen"
 }

lib/l10n/app_en.arb

@@ -207,5 +207,18 @@
     "evenMoney":"You're on the same balance as last month.",
     "balanceStatusA": "Your balance is ",
     "balanceStatusB": " compared to last month.",
-    "searchLabel":"Search entries..."
+    "searchLabel":"Search entries...",
+    "exportSingle":"Export a wallet",
+    "exportSingleDesc":"Saves a single wallet into your downloads directory",
+    "exportArchive":"Export archive",
+    "exportArchiveDesc":"Exports all wallets into an archive to your downloads directory",
+    "importSingle":"Import a wallet",
+    "importSingleDesc":"Imports a single wallet from file",
+    "importArchive":"Import archive",
+    "importArchiveDesc":"Imports all valid wallets inside an archive",
+    "settingsData":"Data",
+    "selectExportWallet":"Select a wallet to export",
+    "exportError":"An error occured trying to export wallet",
+    "exportCompleted":"Export completed",
+    "importCompleted":"Import completed"
 }

lib/views/home.dart

@@ -5,12 +5,12 @@ import 'dart:async';
 import 'package:dynamic_color/dynamic_color.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_file_dialog/flutter_file_dialog.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:flutter_slidable/flutter_slidable.dart';
 import 'package:flutter_speed_dial/flutter_speed_dial.dart';
 import 'package:flutter_tesseract_ocr/flutter_tesseract_ocr.dart';
 import 'package:grouped_list/grouped_list.dart';
-import 'package:image_picker/image_picker.dart';
 import 'package:intl/date_symbol_data_local.dart';
 import 'package:intl/intl.dart';
 import 'package:prasule/api/category.dart';
@@ -125,18 +125,15 @@ class _HomeViewState extends State<HomeView> {
             SpeedDialChild(
               child: const Icon(Icons.camera_alt),
               label: AppLocalizations.of(context).addCamera,
-              onTap: () async {
+              onTap: () {
-                final picker = ImagePicker();
+                startOcr(SourceType.camera);
-                final media =
-                    await picker.pickImage(source: ImageSource.camera);
-                logger.i(media?.name);
               },
             ),
             SpeedDialChild(
               child: const Icon(Icons.image),
               label: AppLocalizations.of(context).addGallery,
               onTap: () {
-                startOcr(ImageSource.gallery);
+                startOcr(SourceType.photoLibrary);
               },
             ),
           ],
@@ -217,6 +214,7 @@ class _HomeViewState extends State<HomeView> {
                       ),
                     )
                         .then((value) async {
+                      wallets = await WalletManager.listWallets();
                       selectedWallet =
                           await WalletManager.loadWallet(selectedWallet!.name);
                     });
@@ -593,7 +591,7 @@ class _HomeViewState extends State<HomeView> {
     );
   }
 
-  Future<void> startOcr(ImageSource imgSrc) async {
+  Future<void> startOcr(SourceType sourceType) async {
     final availableLanguages = await TessdataApi.getDownloadedData();
     if (availableLanguages.isEmpty) {
       if (!mounted) return;
@@ -637,9 +635,11 @@ class _HomeViewState extends State<HomeView> {
           actions: [
             TextButton(
               onPressed: () async {
-                final picker = ImagePicker();
+                final filePath = await FlutterFileDialog.pickFile(
-                final media = await picker.pickImage(source: imgSrc);
+                    params: OpenFileDialogParams(
-                if (media == null) {
+                        dialogType: OpenFileDialogType.image,
+                        sourceType: sourceType));
+                if (filePath == null) {
                   if (mounted) Navigator.of(context).pop();
                   return;
                 }
@@ -663,7 +663,7 @@ class _HomeViewState extends State<HomeView> {
                   ),
                 );
                 final string = await FlutterTesseractOcr.extractText(
-                  media.path,
+                  filePath,
                   language: selected,
                   args: {
                     "psm": "4",
@@ -758,23 +758,4 @@ class _HomeViewState extends State<HomeView> {
       ),
     );
   }
-
-  Future<void> getLostData() async {
-    final picker = ImagePicker();
-    final response = await picker.retrieveLostData();
-    if (response.isEmpty) {
-      return;
-    }
-    final files = response.files;
-    if (files != null) {
-      logger.i("Found lost files");
-      _handleLostFiles(files);
-    } else {
-      logger.e(response.exception);
-    }
-  }
-
-  void _handleLostFiles(List<XFile> files) {
-    // TODO: implement
-  }
 }

lib/views/settings/settings.dart

@@ -1,9 +1,13 @@
+import 'dart:async';
 import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+import 'package:prasule/api/wallet_manager.dart';
 import 'package:prasule/main.dart';
+import 'package:prasule/pw/platformbutton.dart';
 import 'package:prasule/pw/platformroute.dart';
+import 'package:prasule/util/show_message.dart';
 import 'package:prasule/views/settings/edit_categories.dart';
 import 'package:prasule/views/settings/graph_type.dart';
 import 'package:prasule/views/settings/tessdata_list.dart';
@@ -103,6 +107,190 @@ class _SettingsViewState extends State<SettingsView> {
                 ),
             ],
           ),
+          SettingsSection(
+            title: Text(AppLocalizations.of(context).settingsData),
+            tiles: [
+              SettingsTile.navigation(
+                title: Text(AppLocalizations.of(context).exportSingle),
+                description:
+                    Text(AppLocalizations.of(context).exportSingleDesc),
+                onPressed: (ctx) async {
+                  final all = await WalletManager.listWallets();
+                  if (!ctx.mounted) return;
+                  final w = await showAdaptiveDialog<String>(
+                    context: ctx,
+                    builder: (ctx) => AlertDialog.adaptive(
+                      title: Text(
+                        AppLocalizations.of(context).selectExportWallet,
+                      ),
+                      actions: [
+                        PlatformButton(
+                          text: AppLocalizations.of(context).cancel,
+                          onPressed: () => Navigator.of(ctx).pop(),
+                        ),
+                      ],
+                      content: SizedBox(
+                        width: MediaQuery.of(context).size.width * 0.7,
+                        height: MediaQuery.of(context).size.height * 0.3,
+                        child: ListView.builder(
+                          itemBuilder: (con, i) => InkWell(
+                            onTap: () => Navigator.of(ctx).pop(all[i].name),
+                            child: Padding(
+                              padding: const EdgeInsets.all(8),
+                              child: Text(
+                                all[i].name,
+                                textAlign: TextAlign.center,
+                              ),
+                            ),
+                          ),
+                          shrinkWrap: true,
+                          itemCount: all.length,
+                        ),
+                      ),
+                    ),
+                  );
+                  if (w == null) return;
+                  try {
+                    await WalletManager.exportWallet(name: w);
+                  } catch (e) {
+                    if (!context.mounted) return;
+                    unawaited(
+                      showAdaptiveDialog(
+                        context: context,
+                        builder: (ctx) => AlertDialog.adaptive(
+                          title: Text(
+                            AppLocalizations.of(context).exportError,
+                          ),
+                          content: SingleChildScrollView(
+                            child: Flexible(
+                              child: Text(e.toString()),
+                            ),
+                          ),
+                        ),
+                      ),
+                    );
+                    logger.e(e);
+                    return;
+                  }
+                  if (!ctx.mounted) return;
+                  unawaited(
+                    showMessage(
+                      AppLocalizations.of(ctx).exportCompleted,
+                      ctx,
+                    ),
+                  );
+                },
+              ),
+              SettingsTile.navigation(
+                title: Text(AppLocalizations.of(context).exportArchive),
+                description:
+                    Text(AppLocalizations.of(context).exportArchiveDesc),
+                onPressed: (ctx) async {
+                  try {
+                    await WalletManager.exportAllWallets();
+                  } catch (e) {
+                    if (!ctx.mounted) return;
+                    unawaited(
+                      showAdaptiveDialog(
+                        context: context,
+                        builder: (ctx) => AlertDialog.adaptive(
+                          title: Text(
+                            AppLocalizations.of(context).exportError,
+                          ),
+                          content: SingleChildScrollView(
+                            child: Flexible(
+                              child: Text(e.toString()),
+                            ),
+                          ),
+                        ),
+                      ),
+                    );
+                    logger.e(e);
+                    return;
+                  }
+                  if (!ctx.mounted) return;
+                  unawaited(
+                    showMessage(
+                      AppLocalizations.of(ctx).exportCompleted,
+                      context,
+                    ),
+                  );
+                },
+              ),
+              SettingsTile.navigation(
+                title: Text(AppLocalizations.of(context).importSingle),
+                description:
+                    Text(AppLocalizations.of(context).importSingleDesc),
+                onPressed: (ctx) async {
+                  try {
+                    await WalletManager.importWallet();
+                  } catch (e) {
+                    if (!ctx.mounted) return;
+                    unawaited(
+                      showAdaptiveDialog(
+                        context: context,
+                        builder: (ctx) => AlertDialog.adaptive(
+                          title: Text(
+                            AppLocalizations.of(context).exportError,
+                          ),
+                          content: SingleChildScrollView(
+                            child: Flexible(
+                              child: Text(e.toString()),
+                            ),
+                          ),
+                        ),
+                      ),
+                    );
+                    logger.e(e);
+                    return;
+                  }
+                  if (!ctx.mounted) return;
+                  unawaited(
+                    showMessage(
+                      AppLocalizations.of(ctx).importCompleted,
+                      context,
+                    ),
+                  );
+                },
+              ),
+              SettingsTile.navigation(
+                title: Text(AppLocalizations.of(context).importArchive),
+                description:
+                    Text(AppLocalizations.of(context).importArchiveDesc),
+                onPressed: (ctx) async {
+                  try {
+                    await WalletManager.importArchive();
+                  } catch (e) {
+                    if (!ctx.mounted) return;
+                    unawaited(
+                      showAdaptiveDialog(
+                        context: context,
+                        builder: (ctx) => AlertDialog.adaptive(
+                          title: Text(
+                            AppLocalizations.of(context).exportError,
+                          ),
+                          content: SingleChildScrollView(
+                            child: Flexible(
+                              child: Text(e.toString()),
+                            ),
+                          ),
+                        ),
+                      ),
+                    );
+                    logger.e(e);
+                    return;
+                  }
+                  if (!ctx.mounted) return;
+                  unawaited(
+                    showMessage(
+                      AppLocalizations.of(ctx).importCompleted,
+                      context,
+                    ),
+                  );
+                },
+              ),
+            ],
+          ),
         ],
       ),
     );

pubspec.lock

@@ -18,7 +18,7 @@ packages:
     source: hosted
     version: "6.3.0"
   archive:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: archive
       sha256: "22600aa1e926be775fa5fe7e6894e7fb3df9efda8891c73f70fb3262399a432d"
@@ -177,14 +177,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.7.2"
-  cross_file:
-    dependency: transitive
-    description:
-      name: cross_file
-      sha256: fedaadfa3a6996f75211d835aaeb8fede285dae94262485698afd832371b9a5e
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.3.3+8"
   crypto:
     dependency: transitive
     description:
@@ -273,38 +265,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "7.0.0"
-  file_selector_linux:
-    dependency: transitive
-    description:
-      name: file_selector_linux
-      sha256: "045d372bf19b02aeb69cacf8b4009555fb5f6f0b7ad8016e5f46dd1387ddd492"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.9.2+1"
-  file_selector_macos:
-    dependency: transitive
-    description:
-      name: file_selector_macos
-      sha256: b15c3da8bd4908b9918111fa486903f5808e388b8d1c559949f584725a6594d6
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.9.3+3"
-  file_selector_platform_interface:
-    dependency: transitive
-    description:
-      name: file_selector_platform_interface
-      sha256: a3994c26f10378a039faa11de174d7b78eb8f79e4dd0af2a451410c1a5c3f66b
-      url: "https://pub.dev"
-    source: hosted
-    version: "2.6.2"
-  file_selector_windows:
-    dependency: transitive
-    description:
-      name: file_selector_windows
-      sha256: d3547240c20cabf205c7c7f01a50ecdbc413755814d6677f3cb366f04abcead0
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.9.3+1"
   fixnum:
     dependency: transitive
     description:
@@ -347,6 +307,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_file_dialog:
+    dependency: "direct main"
+    description:
+      name: flutter_file_dialog
+      sha256: "9344b8f07be6a1b6f9854b723fb0cf84a8094ba94761af1d213589d3cb087488"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
   flutter_iconpicker:
     dependency: "direct main"
     description:
@@ -424,14 +392,6 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
-  flutter_plugin_android_lifecycle:
-    dependency: transitive
-    description:
-      name: flutter_plugin_android_lifecycle
-      sha256: b068ffc46f82a55844acfa4fdbb61fad72fa2aef0905548419d97f0f95c456da
-      url: "https://pub.dev"
-    source: hosted
-    version: "2.0.17"
   flutter_slidable:
     dependency: "direct main"
     description:
@@ -519,14 +479,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "5.1.2"
-  http:
-    dependency: transitive
-    description:
-      name: http
-      sha256: a2bbf9d017fcced29139daa8ed2bba4ece450ab222871df93ca9eec6f80c34ba
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.2.0"
   http_multi_server:
     dependency: transitive
     description:
@@ -551,70 +503,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.1.4"
-  image_picker:
-    dependency: "direct main"
-    description:
-      name: image_picker
-      sha256: "26222b01a0c9a2c8fe02fc90b8208bd3325da5ed1f4a2acabf75939031ac0bdd"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.0.7"
-  image_picker_android:
-    dependency: transitive
-    description:
-      name: image_picker_android
-      sha256: "39f2bfe497e495450c81abcd44b62f56c2a36a37a175da7d137b4454977b51b1"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.8.9+3"
-  image_picker_for_web:
-    dependency: transitive
-    description:
-      name: image_picker_for_web
-      sha256: e2423c53a68b579a7c37a1eda967b8ae536c3d98518e5db95ca1fe5719a730a3
-      url: "https://pub.dev"
-    source: hosted
-    version: "3.0.2"
-  image_picker_ios:
-    dependency: transitive
-    description:
-      name: image_picker_ios
-      sha256: fadafce49e8569257a0cad56d24438a6fa1f0cbd7ee0af9b631f7492818a4ca3
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.8.9+1"
-  image_picker_linux:
-    dependency: transitive
-    description:
-      name: image_picker_linux
-      sha256: "4ed1d9bb36f7cd60aa6e6cd479779cc56a4cb4e4de8f49d487b1aaad831300fa"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.2.1+1"
-  image_picker_macos:
-    dependency: transitive
-    description:
-      name: image_picker_macos
-      sha256: "3f5ad1e8112a9a6111c46d0b57a7be2286a9a07fc6e1976fdf5be2bd31d4ff62"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.2.1+1"
-  image_picker_platform_interface:
-    dependency: transitive
-    description:
-      name: image_picker_platform_interface
-      sha256: fa4e815e6fcada50e35718727d83ba1c92f1edf95c0b4436554cec301b56233b
-      url: "https://pub.dev"
-    source: hosted
-    version: "2.9.3"
-  image_picker_windows:
-    dependency: transitive
-    description:
-      name: image_picker_windows
-      sha256: "6ad07afc4eb1bc25f3a01084d28520496c4a3bb0cb13685435838167c9dcedeb"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.2.1+1"
   integration_test:
     dependency: "direct dev"
     description: flutter

pubspec.yaml

@@ -13,6 +13,7 @@ environment:
 # the latest version available on pub.dev. To see which dependencies have newer
 # versions available, run `flutter pub outdated`.
 dependencies:
+  archive: ^3.4.10
   cupertino_icons: ^1.0.2
   currency_picker: ^2.0.16
   dio: ^5.3.0
@@ -21,6 +22,7 @@ dependencies:
   flex_color_picker: ^3.3.0
   flutter:
     sdk: flutter
+  flutter_file_dialog: ^3.0.2
   flutter_iconpicker: ^3.2.4
   flutter_localizations:
     sdk: flutter
@@ -29,7 +31,6 @@ dependencies:
   flutter_tesseract_ocr: ^0.4.23
   fluttertoast: ^8.2.4
   grouped_list: ^5.1.2
-  image_picker: ^1.0.1
   intl: any
   introduction_screen: ^3.1.11
   json_annotation: ^4.8.1