softplayer-web/lib/features/authorization/application/authorization_application.dart

import 'dart:developer';

import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:softplayer_web/core/api/v1/public_accounts.dart';
import 'package:softplayer_web/core/tokens/application/tokens_application.dart';
import 'package:softplayer_web/features/authorization/application/sign_in_data.dart';
import 'package:softplayer_web/features/authorization/application/sign_up_data.dart';

class AuthState {
  final AuthMode mode;
  final bool isAuthorized;

  const AuthState({this.mode = AuthMode.login, this.isAuthorized = false});
  AuthState copyWith({AuthMode? mode, String? status, bool? isAuthorized}) {
    return AuthState(
      mode: mode ?? this.mode,
      isAuthorized: isAuthorized ?? this.isAuthorized,
    );
  }
}

enum AuthMode { login, signup }

final authorizationControllerProvider =
    AsyncNotifierProvider<AuthorizationController, AuthState>(
      AuthorizationController.new,
    );

class AuthorizationController extends AsyncNotifier<AuthState> {
  @override
  Future<AuthState> build() async {
    // Use is considered authorized if tokens are set in the memory.
    // In case tokens are not valid, it will be discovered by the first
    // api call.
    final tokenState = await ref.watch(tokensControllerProvider.future);
    if (tokenState.getAccessToken().isEmpty &&
        tokenState.getRefreshToken().isNotEmpty) {
      final tokenCtrl = ref.read(tokensControllerProvider.notifier);
      await tokenCtrl.checkTokens();
    }
    final isAuthorized =
        tokenState.getAccessToken().isNotEmpty &&
        tokenState.getRefreshToken().isNotEmpty;
    return AuthState(isAuthorized: isAuthorized);
  }

  AuthMode authMode = AuthMode.login;

  void toggleAuthMode() {
    state = AsyncData(
      state.value!.copyWith(
        mode: state.value!.mode == AuthMode.login
            ? AuthMode.signup
            : AuthMode.login,
      ),
    );
  }

  Future<void> signin(SignInData form) async {
    state = const AsyncLoading();

    state = await AsyncValue.guard(() async {
      final accountsGrpc = ref.read(publicAccountsGrpcProvider);
      final tokenCtrl = ref.read(tokensControllerProvider.notifier);

      final response = await accountsGrpc.signIn(form.toProto());
      await tokenCtrl.writeTokenPair(Tokens.fromProto(response.tokenPair));
      return state.value!.copyWith(isAuthorized: true);
    });
  }

  Future<void> signup(SignUpData form) async {
    state = const AsyncLoading();

    state = await AsyncValue.guard(() async {
      final accountsGrpc = ref.read(publicAccountsGrpcProvider);
      final tokenCtrl = ref.read(tokensControllerProvider.notifier);

      final response = await accountsGrpc.signUp(form.toProto());
      await tokenCtrl.writeTokenPair(Tokens.fromProto(response.tokenPair));
      return state.value!.copyWith(isAuthorized: true);
    });
  }

  Future<void> logout() async {
    state = await AsyncValue.guard(() async {
      return state.value!.copyWith(isAuthorized: false);
    });
  }
}