116 lines
3.3 KiB
Dart
116 lines
3.3 KiB
Dart
import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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/// Injected in `main()` once SharedPreferences has loaded.
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final prefsProvider = Provider<SharedPreferences>(
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(ref) => throw UnimplementedError('prefsProvider must be overridden'),
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);
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class SessionState {
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const SessionState({
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this.onboardingSeen = false,
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this.phone,
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this.signedIn = false,
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this.locationGranted = false,
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this.notificationsGranted = false,
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this.cameraGranted = false,
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});
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final bool onboardingSeen;
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final String? phone;
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final bool signedIn;
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final bool locationGranted;
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final bool notificationsGranted;
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final bool cameraGranted;
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/// The three-step permission run shown right after verification.
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bool get permissionsDone =>
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locationGranted && notificationsGranted && cameraGranted;
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SessionState copyWith({
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bool? onboardingSeen,
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String? phone,
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bool? signedIn,
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bool? locationGranted,
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bool? notificationsGranted,
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bool? cameraGranted,
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}) => SessionState(
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onboardingSeen: onboardingSeen ?? this.onboardingSeen,
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phone: phone ?? this.phone,
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signedIn: signedIn ?? this.signedIn,
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locationGranted: locationGranted ?? this.locationGranted,
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notificationsGranted: notificationsGranted ?? this.notificationsGranted,
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cameraGranted: cameraGranted ?? this.cameraGranted,
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);
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}
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class SessionController extends Notifier<SessionState> {
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static const _kOnboarding = 'onboarding_seen';
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static const _kPhone = 'phone';
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static const _kSignedIn = 'signed_in';
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static const _kLocation = 'perm_location';
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static const _kNotifications = 'perm_notifications';
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static const _kCamera = 'perm_camera';
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SharedPreferences get _prefs => ref.read(prefsProvider);
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@override
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SessionState build() {
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final p = _prefs;
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return SessionState(
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onboardingSeen: p.getBool(_kOnboarding) ?? false,
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phone: p.getString(_kPhone),
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signedIn: p.getBool(_kSignedIn) ?? false,
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locationGranted: p.getBool(_kLocation) ?? false,
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notificationsGranted: p.getBool(_kNotifications) ?? false,
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cameraGranted: p.getBool(_kCamera) ?? false,
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);
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}
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void completeOnboarding() {
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_prefs.setBool(_kOnboarding, true);
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state = state.copyWith(onboardingSeen: true);
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}
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/// The demo backend accepts any 10-digit number and always sends `123456`.
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static const demoCode = '123456';
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String sendCode(String phone) {
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_prefs.setString(_kPhone, phone);
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state = state.copyWith(phone: phone);
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return demoCode;
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}
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bool verifyCode(String code) {
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if (code != demoCode) return false;
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_prefs.setBool(_kSignedIn, true);
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state = state.copyWith(signedIn: true);
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return true;
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}
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void grantLocation() {
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_prefs.setBool(_kLocation, true);
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state = state.copyWith(locationGranted: true);
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}
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void grantNotifications() {
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_prefs.setBool(_kNotifications, true);
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state = state.copyWith(notificationsGranted: true);
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}
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void grantCamera() {
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_prefs.setBool(_kCamera, true);
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state = state.copyWith(cameraGranted: true);
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}
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Future<void> signOut() async {
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await _prefs.remove(_kSignedIn);
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await _prefs.remove(_kPhone);
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state = state.copyWith(signedIn: false, phone: '');
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}
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}
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final sessionProvider = NotifierProvider<SessionController, SessionState>(
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SessionController.new,
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);
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