59 lines
1.8 KiB
Dart
59 lines
1.8 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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import 'package:path_provider/path_provider.dart';
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import 'package:todo/buisness/ToDoItem.dart';
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import 'package:todo/database/DatabaseInterface.dart';
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class PathProvider implements DatabaseInterface {
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Future<String> get _localPath async {
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final directory = await getApplicationDocumentsDirectory();
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return directory.path;
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}
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Future<File> get _localFile async {
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final path = await _localPath;
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print(path);
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File file = File('$path/dataSeq.txt');
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if (!file.existsSync()) {
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file = await file.create();
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await file.writeAsString('[]');
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}
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return file;
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}
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@override
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Future<List<ToDoItem>> getToDoItems() async {
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final file = await _localFile;
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final contents = await file.readAsString();
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final contentJson = jsonDecode(contents);
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List<dynamic> contentList = contentJson is List ? contentJson : [contentJson];
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List<ToDoItem> toDoList = contentList.map((item) => ToDoItem.fromJson(item)).toList();
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return toDoList;
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}
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@override
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Future<File> insertToDoItem(ToDoItem item) async {
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item.id = DateTime.now().millisecondsSinceEpoch;
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List<ToDoItem> l = await getToDoItems();
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l.add(item);
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final file = await _localFile;
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return file.writeAsString(jsonEncode(l.map((item) => item.toJson()).toList()));
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}
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@override
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Future<File> updateToDoItem(ToDoItem item) async {
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final file = await _localFile;
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return file.writeAsString(jsonEncode(item.toJson()));
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}
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@override
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Future<File> deleteToDoItem(int id) async {
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final file = await _localFile;
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List<ToDoItem> l = await getToDoItems();
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l.remove(l.firstWhere((item) => item.id == id));
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return file.writeAsString(jsonEncode(l.map((item) => item.toJson()).toList()));
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}
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} |