106 lines
3.0 KiB
Dart
106 lines
3.0 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import 'package:http/http.dart' as http;
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import 'dart:convert';
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enum ApiService {
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auth,
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app,
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}
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Future<String?> request(BuildContext? context, ApiService service, String method, String path, Object? body) async {
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final messenger = context != null ? ScaffoldMessenger.of(context) : null;
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final prefs = await SharedPreferences.getInstance();
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final host = switch (service) {
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ApiService.auth => const String.fromEnvironment('AUTH_SERVICE_HOST'),
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ApiService.app => const String.fromEnvironment('APP_SERVICE_HOST'),
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};
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final token = prefs.getString('token');
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final Map<String, String> headers = {};
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if (token != null) headers.addAll({'Authorization': 'Bearer $token'});
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final http.Response response;
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try {
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if (method == 'GET') {
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response = await http.get(Uri.parse(host + path), headers: headers);
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} else {
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final function = switch (method) {
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'POST' => http.post,
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'PUT' => http.put,
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'DELETE' => http.delete,
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_ => throw const FormatException('Invalid method'),
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};
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headers.addAll({'Content-Type': 'application/json'});
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response = await function(
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Uri.parse(host + path),
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headers: headers,
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body: body != null ? jsonEncode(body) : null,
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);
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}
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} catch (e) {
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debugPrint(e.toString());
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messenger?.showSnackBar(const SnackBar(content: Text('Unable to connect to server')));
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return null;
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}
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if (response.statusCode < 200 || response.statusCode >= 300) {
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try {
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final json = jsonDecode(response.body);
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messenger?.showSnackBar(SnackBar(content: Text(json['message'] ?? json['title'])));
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debugPrint('API error: ' + json['message']);
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} catch (e) {
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debugPrint(e.toString());
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messenger?.showSnackBar(SnackBar(content: Text('Something went wrong (HTTP ${response.statusCode})')));
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}
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return null;
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}
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return utf8.decode(response.bodyBytes);
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}
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Future<bool> isLoggedIn(BuildContext context) async {
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final messenger = ScaffoldMessenger.of(context);
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final prefs = await SharedPreferences.getInstance();
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final token = prefs.getString('token');
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if (token == null) {
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logout();
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return false;
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}
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try {
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String base64 = token.split('.')[1];
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base64 += List.filled(base64.length % 4 == 0 ? 0 : 4 - base64.length % 4, '=').join();
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final payload = jsonDecode(String.fromCharCodes(base64Decode(base64)));
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if (payload['exp'] < DateTime.now().millisecondsSinceEpoch / 1000) {
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messenger.showSnackBar(const SnackBar(content: Text('Token expired, please sign in again')));
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logout();
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return false;
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}
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} catch (e) {
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messenger.showSnackBar(const SnackBar(content: Text('Invalid token, please sign in again')));
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debugPrint(e.toString());
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logout();
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return false;
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}
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return true;
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}
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void logout() async {
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final prefs = await SharedPreferences.getInstance();
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prefs.remove('token');
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prefs.remove('refresh-token');
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prefs.remove('id');
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}
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