50 lines
999 B
Dart
50 lines
999 B
Dart
library titama.io;
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import 'dart:io';
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import 'dart:convert';
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import 'dart:async';
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import '../common/messages.dart';
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/**
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* Class for writing and loading the courses as JSON to a file.
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*/
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class TitamaIo {
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final _filename = "./data.json";
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/**
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* Write courses as JSON in a file.
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* @param List<Courses> _course List of courses to save.
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*/
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writeJson(List<Course> _courses) async {
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String _json = JSON.encode(_courses);
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await new File(_filename).writeAsString(_json);
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}
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/**
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* Read a saved json file.
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* @return Future<List<Course>> future with list of courses.
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*/
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Future<List<Course>> readJson() async {
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List<Course> courses = new List<Course>();
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File data = new File(_filename);
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if (await data.exists()) {
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String _content = await data.readAsString();
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Map parsed = JSON.decode(_content);
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for (int i = 0; i < parsed.length; i++) {
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courses.add(new Course.fromJson(parsed[i]));
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}
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}
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return courses;
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}
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}
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