First version of settings view

lib/presentation/views/main_menu/settings_view.dart

@@ -1,10 +1,55 @@
-import 'package:flutter/material.dart';
+import 'dart:convert';
-import 'package:game_tracker/core/custom_theme.dart';
+import 'dart:io';
-import 'package:game_tracker/presentation/widgets/tiles/settings_list_tile.dart';
 
-class SettingsView extends StatelessWidget {
+import 'package:file_picker/file_picker.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:game_tracker/core/custom_theme.dart';
+import 'package:game_tracker/data/db/database.dart';
+import 'package:game_tracker/data/dto/game.dart';
+import 'package:game_tracker/data/dto/group.dart';
+import 'package:game_tracker/data/dto/player.dart';
+import 'package:game_tracker/presentation/widgets/tiles/settings_list_tile.dart';
+import 'package:json_schema/json_schema.dart';
+import 'package:provider/provider.dart';
+
+class SettingsView extends StatefulWidget {
   const SettingsView({super.key});
 
+  @override
+  State<SettingsView> createState() => _SettingsViewState();
+
+  /// Helper method to read file content from either bytes or path
+  static Future<String> _readFileContent(PlatformFile file) async {
+    if (file.bytes != null) return utf8.decode(file.bytes!);
+    if (file.path != null) return await File(file.path!).readAsString();
+
+    throw Exception('Die Datei hat keinen lesbaren Inhalt');
+  }
+
+  static Future<bool> validateJsonSchema(String jsonString) async {
+    final String schemaString;
+
+    schemaString = await rootBundle.loadString('assets/schema.json');
+
+    try {
+      final schema = JsonSchema.create(json.decode(schemaString));
+      final jsonData = json.decode(jsonString);
+      final result = schema.validate(jsonData);
+
+      if (result.isValid) {
+        return true;
+      }
+      return false;
+    } catch (e, stack) {
+      print('[validateJsonSchema] $e');
+      print(stack);
+      return false;
+    }
+  }
+}
+
+class _SettingsViewState extends State<SettingsView> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -41,39 +86,31 @@ class SettingsView extends StatelessWidget {
                   ),
 
                   SettingsListTile(
-                    title: 'Export Data',
+                    title: 'Export data',
                     icon: Icons.upload_outlined,
                     suffixWidget: const Icon(Icons.arrow_forward_ios, size: 16),
-                    onPressed: () => exportData(),
+                    onPressed: () async {
+                      final String json = await _getAppDataAsJson(context);
+                      await exportData(json, 'export');
+                    },
                   ),
                   SettingsListTile(
-                    title: 'Import Data',
+                    title: 'Import data',
                     icon: Icons.download_outlined,
                     suffixWidget: const Icon(Icons.arrow_forward_ios, size: 16),
-                    onPressed: () => importData(),
+                    onPressed: () => importData(context),
-                  ),
-                  const Padding(
-                    padding: EdgeInsets.symmetric(horizontal: 24, vertical: 10),
-                    child: Text(
-                      textAlign: TextAlign.start,
-                      'Example Headline',
-                      style: TextStyle(
-                        fontSize: 22,
-                        fontWeight: FontWeight.bold,
-                      ),
-                    ),
                   ),
                   SettingsListTile(
-                    title: 'Example Tile',
+                    title: 'Delete all data',
+                    icon: Icons.download_outlined,
+                    suffixWidget: const Icon(Icons.arrow_forward_ios, size: 16),
+                    onPressed: () => deleteAllData(context),
+                  ),
+                  SettingsListTile(
+                    title: 'Add Sample Data',
                     icon: Icons.upload_outlined,
                     suffixWidget: const Icon(Icons.arrow_forward_ios, size: 16),
-                    onPressed: () => print('Example Tile'),
+                    onPressed: () => addSampleData(context),
-                  ),
-                  SettingsListTile(
-                    title: 'Example Tile',
-                    icon: Icons.download_outlined,
-                    suffixWidget: const Icon(Icons.arrow_forward_ios, size: 16),
-                    onPressed: () => print('Example Tile'),
                   ),
                 ],
               ),
@@ -82,9 +119,128 @@ class SettingsView extends StatelessWidget {
     );
   }
 
-  // TODO: Implement export functionality
+  Future<void> deleteAllData(BuildContext context) async {
-  void exportData() {}
+    final db = Provider.of<AppDatabase>(context, listen: false);
+    await db.gameDao.deleteAllGames();
+    await db.groupDao.deleteAllGroups();
+    await db.playerDao.deleteAllPlayers();
+    print('[deleteAllData] All data deleted');
+  }
 
-  // TODO: Implement import functionality
+  Future<void> addSampleData(BuildContext context) async {
-  void importData() {}
+    final db = Provider.of<AppDatabase>(context, listen: false);
+
+    final player1 = Player(name: 'Alice');
+    final player2 = Player(name: 'Bob');
+    final group = Group(name: 'Friends', members: [player1, player2]);
+    final game = Game(name: 'Sample Game', group: group, winner: 'Alice');
+
+    await db.playerDao.addPlayer(player: player1);
+    await db.playerDao.addPlayer(player: player2);
+    await db.groupDao.addGroup(group: group);
+    await db.gameDao.addGame(game: game);
+  }
+
+  Future<String> _getAppDataAsJson(BuildContext context) async {
+    final db = Provider.of<AppDatabase>(context, listen: false);
+    final games = await db.gameDao.getAllGames();
+    final groups = await db.groupDao.getAllGroups();
+    final players = await db.playerDao.getAllPlayers();
+
+    // Construct a JSON representation of the data
+    final Map<String, dynamic> jsonMap = {
+      'games': games.map((game) => game.toJson()).toList(),
+      'groups': groups.map((group) => group.toJson()).toList(),
+      'players': players.map((player) => player.toJson()).toList(),
+    };
+
+    return json.encode(jsonMap);
+  }
+
+  Future<bool> exportData(String jsonString, String fileName) async {
+    try {
+      final bytes = Uint8List.fromList(utf8.encode(jsonString));
+      await FilePicker.platform.saveFile(
+        fileName: '$fileName.json',
+        bytes: bytes,
+      );
+      return true;
+    } catch (e, stack) {
+      print('[exportData] $e');
+      print(stack);
+      return false;
+    }
+  }
+
+  Future<void> importData(BuildContext context) async {
+    final db = Provider.of<AppDatabase>(context, listen: false);
+
+    final path = await FilePicker.platform.pickFiles(
+      type: FileType.custom,
+      allowedExtensions: ['json'],
+    );
+
+    if (path == null) {
+      print('[importData] No file selected');
+      return;
+    }
+
+    try {
+      final jsonString = await SettingsView._readFileContent(path.files.single);
+
+      // Checks if the JSON String is in the gameList format
+      if (await SettingsView.validateJsonSchema(jsonString)) {
+        final Map<String, dynamic> jsonData =
+            json.decode(jsonString) as Map<String, dynamic>;
+        print('[importData] : $jsonData');
+        final List<dynamic>? gamesJson = jsonData['games'] as List<dynamic>?;
+        final List<dynamic>? groupsJson = jsonData['groups'] as List<dynamic>?;
+        final List<dynamic>? playersJson =
+            jsonData['players'] as List<dynamic>?;
+
+        final List<Game> importedGames =
+            gamesJson
+                ?.map((g) => Game.fromJson(g as Map<String, dynamic>))
+                .toList() ??
+            [];
+        final List<Group> importedGroups =
+            groupsJson
+                ?.map((g) => Group.fromJson(g as Map<String, dynamic>))
+                .toList() ??
+            [];
+        final List<Player> importedPlayers =
+            playersJson
+                ?.map((p) => Player.fromJson(p as Map<String, dynamic>))
+                .toList() ??
+            [];
+
+        for (Player player in importedPlayers) {
+          await db.playerDao.addPlayer(player: player);
+        }
+
+        for (Group group in importedGroups) {
+          await db.groupDao.addGroup(group: group);
+        }
+
+        for (Game game in importedGames) {
+          await db.gameDao.addGame(game: game);
+        }
+      } else {
+        print('[importData] Invalid JSON schema');
+        return;
+      }
+      print('[importData] Data imported successfully');
+      return;
+    } on FormatException catch (e, stack) {
+      print('[importData] FormatException');
+      print('[importData] $e');
+      print(stack);
+      return;
+    } on Exception catch (e, stack) {
+      print('[importData] Exception');
+      print('[importData] $e');
+      print(stack);
+      return;
+    }
+  }
 }

pubspec.yaml

@@ -20,6 +20,9 @@ dependencies:
   provider: ^6.1.5
   skeletonizer: ^2.1.0+1
   uuid: ^4.5.2
+  file_picker: ^10.3.6
+  json_schema: ^5.2.2
+  file_saver: ^0.3.1
 
 dev_dependencies:
   flutter_test:
@@ -30,6 +33,5 @@ dev_dependencies:
 
 flutter:
   uses-material-design: true
-
+  assets:
-assets:
+    - assets/schema.json
-  - assets/schema.json