forked from firka/student-legacy
60 lines
2.1 KiB
Dart
60 lines
2.1 KiB
Dart
import 'package:filcnaplo/api/providers/user_provider.dart';
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import 'package:filcnaplo/api/providers/database_provider.dart';
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import 'package:filcnaplo/models/user.dart';
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import 'package:filcnaplo_kreta_api/client/api.dart';
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import 'package:filcnaplo_kreta_api/client/client.dart';
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import 'package:filcnaplo_kreta_api/models/exam.dart';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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class ExamProvider with ChangeNotifier {
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late List<Exam> _exams;
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late BuildContext _context;
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List<Exam> get exams => _exams;
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ExamProvider({
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List<Exam> initialExams = const [],
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required BuildContext context,
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}) {
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_exams = List.castFrom(initialExams);
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_context = context;
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if (_exams.isEmpty) restore();
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}
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Future<void> restore() async {
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String? userId = Provider.of<UserProvider>(_context, listen: false).id;
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// Load exams from the database
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if (userId != null) {
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var dbExams = await Provider.of<DatabaseProvider>(_context, listen: false).userQuery.getExams(userId: userId);
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_exams = dbExams;
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notifyListeners();
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}
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}
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// Fetches Exams from the Kreta API then stores them in the database
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Future<void> fetch() async {
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User? user = Provider.of<UserProvider>(_context, listen: false).user;
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if (user == null) throw "Cannot fetch Exams for User null";
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String iss = user.instituteCode;
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List? examsJson = await Provider.of<KretaClient>(_context, listen: false).getAPI(KretaAPI.exams(iss));
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if (examsJson == null) throw "Cannot fetch Exams for User ${user.id}";
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List<Exam> exams = examsJson.map((e) => Exam.fromJson(e)).toList();
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if (exams.isNotEmpty || _exams.isNotEmpty) await store(exams);
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}
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// Stores Exams in the database
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Future<void> store(List<Exam> exams) async {
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User? user = Provider.of<UserProvider>(_context, listen: false).user;
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if (user == null) throw "Cannot store Exams for User null";
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String userId = user.id;
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await Provider.of<DatabaseProvider>(_context, listen: false).userStore.storeExams(exams, userId: userId);
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_exams = exams;
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notifyListeners();
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}
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}
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