78 lines
2.2 KiB
Dart
78 lines
2.2 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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import 'package:file_selector/file_selector.dart';
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import 'package:flutter/services.dart';
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import '../model/bookmark.dart';
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import '../model/collection.dart';
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import '../assets/constants.dart' as constants;
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class JsonFileService {
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static Future<bool> exportToJson({
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required List<Collection> collections,
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required List<Bookmark> bookmarks,
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}) async {
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try {
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final dir = await _directoryPath;
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if (dir.isEmpty) return false;
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final data = {
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'collections': collections.map((c) => c.toJson()).toList(),
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'bookmarks': bookmarks.map((b) => b.toJson()).toList(),
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};
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final json = jsonEncode(data).codeUnits;
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final file = XFile.fromData(
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Uint8List.fromList(json),
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mimeType: 'application/json',
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name: constants.jsonFileName,
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);
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file.saveTo('$dir/${constants.jsonFileName}');
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} catch (e) {
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return false;
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}
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return true;
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}
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static Future<({List<Collection> collections, List<Bookmark> bookmarks})>
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importFromJson() async {
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try {
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const typeGroup = XTypeGroup(label: 'json', extensions: <String>['json']);
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final XFile? file = await openFile(
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acceptedTypeGroups: <XTypeGroup>[typeGroup],
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);
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if (file == null) {
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return (collections: <Collection>[], bookmarks: <Bookmark>[]);
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}
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final jsonString = await file.readAsString();
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final data = jsonDecode(jsonString) as Map<String, dynamic>;
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final collections = (data['collections'] as List<dynamic>? ?? [])
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.map((json) => Collection.fromJson(json as Map<String, dynamic>))
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.toList();
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final bookmarks = (data['bookmarks'] as List<dynamic>? ?? [])
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.map((json) => Bookmark.fromJson(json as Map<String, dynamic>))
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.toList();
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return (collections: collections, bookmarks: bookmarks);
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} catch (e) {
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return (collections: <Collection>[], bookmarks: <Bookmark>[]);
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}
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}
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static Future<String> get _directoryPath async {
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if (Platform.isAndroid) {
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return await getDirectoryPath(
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initialDirectory: constants.defaultAndroidExportDirectory,
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) ??
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'';
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}
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return await getDirectoryPath() ?? '';
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}
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}
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