Allow choosing a custom directory for local backups

lib/app/settings/export_page.dart

@@ -1,9 +1,9 @@
+import 'package:file_picker/file_picker.dart';
 import 'package:flutter/material.dart';
 import 'package:monekin/core/database/services/transaction/transaction_service.dart';
 import 'package:monekin/core/presentation/widgets/dates/outlinedButtonStacked.dart';
 import 'package:monekin/core/presentation/widgets/persistent_footer_button.dart';
 import 'package:monekin/core/presentation/widgets/transaction_filter/transaction_filters.dart';
-import 'package:monekin/core/utils/logger.dart';
 import 'package:monekin/i18n/translations.g.dart';
 
 import '../../core/database/backup/backup_database_service.dart';
@@ -69,19 +69,29 @@ class _ExportDataPageState extends State<ExportDataPage> {
             child: Text(t.backup.export.title),
             onPressed: () async {
               final messeger = ScaffoldMessenger.of(context);
+              String? path = await FilePicker.platform.getDirectoryPath();
+
+              if (path == null) {
+                // TODO: Maybe we should also add a snackbar here
+                return;
+              }
 
               if (selectedExportFormat == _ExportFormats.db) {
                 await BackupDatabaseService()
-                    .downloadDatabaseFile(context)
+                    .exportDatabaseFile(path)
                     .then((value) {
-                  Logger.printDebug('EEEEEEEEEEE');
+                  messeger.showSnackBar(SnackBar(
+                    content: Text(t.backup.export.success(x: path)),
+                  ));
                 }).catchError((err) {
-                  Logger.printDebug(err);
+                  messeger.showSnackBar(SnackBar(
+                    content: Text('$err'),
+                  ));
                 });
               } else {
                 await BackupDatabaseService()
                     .exportSpreadsheet(
-                        context,
+                        path,
                         await TransactionService.instance
                             .getTransactions(filters: filters)
                             .first)

lib/core/database/backup/backup_database_service.dart

@@ -2,40 +2,31 @@ import 'dart:io';
 
 import 'package:csv/csv.dart';
 import 'package:file_picker/file_picker.dart';
-import 'package:flutter/material.dart';
 import 'package:intl/intl.dart';
 import 'package:monekin/core/database/app_db.dart';
 import 'package:monekin/core/database/services/app-data/app_data_service.dart';
 import 'package:monekin/core/models/transaction/transaction.dart';
-import 'package:monekin/core/utils/get_download_path.dart';
 import 'package:monekin/core/utils/logger.dart';
 import 'package:path/path.dart' as path;
 
 class BackupDatabaseService {
   AppDB db = AppDB.instance;
 
-  Future<void> downloadDatabaseFile(BuildContext context) async {
-    final messeger = ScaffoldMessenger.of(context);
-
+  Future<void> exportDatabaseFile(String exportPath) async {
     List<int> dbFileInBytes = await File(await db.databasePath).readAsBytes();
 
-    String downloadPath = await getDownloadPath();
-    downloadPath = path.join(
-      downloadPath,
+    exportPath = path.join(
+      exportPath,
       "monekin-${DateFormat('yyyyMMdd-Hms').format(DateTime.now())}.db",
     );
 
-    File downloadFile = File(downloadPath);
+    File downloadFile = File(exportPath);
 
     await downloadFile.writeAsBytes(dbFileInBytes);
-
-    messeger.showSnackBar(SnackBar(
-      content: Text('Base de datos descargada con exito en $downloadPath'),
-    ));
   }
 
   Future<String> exportSpreadsheet(
-    BuildContext context,
+    String exportPath,
     List<MoneyTransaction> data, {
     String format = 'csv',
     String separator = ',',
@@ -94,15 +85,14 @@ class BackupDatabaseService {
       }
     }
 
-    String downloadPath = await getDownloadPath();
-    downloadPath =
-        '${downloadPath}Transactions-${DateFormat('yyyyMMdd-Hms').format(DateTime.now())}.csv';
+    exportPath =
+        '${exportPath}Transactions-${DateFormat('yyyyMMdd-Hms').format(DateTime.now())}.csv';
 
-    File downloadFile = File(downloadPath);
+    File exportFile = File(exportPath);
 
-    await downloadFile.writeAsString(csvData);
+    await exportFile.writeAsString(csvData);
 
-    return downloadPath;
+    return exportPath;
   }
 
   Future<bool> importDatabase() async {