auth_management 0.2.1

Collection of auth service with advanced controlling system.

flutter_auth_management

Collection of service with advanced style and controlling system.

Biometric Login

Activity Changes:

import io.flutter.embedding.android.FlutterFragmentActivity;

public class MainActivity extends FlutterFragmentActivity { // ... }

Permissions

Auth provider instance

Import the library

import 'package:auth_management/core.dart';

Create user backup instance

class UserBackup extends BackupDataSourceImpl {
  @override
  Future<void> onCreated(Auth data) async {
    // Store authorized user data in remote server
    log("Authorized user data : $data");
  }

  @override
  Future<void> onDeleted(String id) async {
    // Clear unauthorized user data from remote server
    log("Unauthorized user id : $id");
  }
}

Main instance

class Application extends StatelessWidget {
  const Application({super.key});

  @override
  Widget build(BuildContext context) {
    return AuthProvider(
      controller: AuthController(backup: UserBackup()),
      child: MaterialApp(
        title: 'Auth Management',
        home: AuthObserver(
          listener: (context, value) {
            if (value.isError) {
              ScaffoldMessenger.of(context).showSnackBar(
                SnackBar(content: Text(value.error)),
              );
            }
            if (value.isMessage) {
              ScaffoldMessenger.of(context).showSnackBar(
                SnackBar(content: Text(value.message)),
              );
            }
          },
          builder: (context, value) {
            if (value.isAuthenticated) {
              return const HomePage();
            } else {
              return const LoginPage();
            }
          },
        ),
      ),
    );
  }
}

Create Auth screen

import 'package:auth_management/core.dart';
import 'package:flutter/material.dart';

class LoginPage extends StatefulWidget {
  const LoginPage({super.key});

  @override
  State<LoginPage> createState() => _LoginPageState();
}

class _LoginPageState extends State<LoginPage> {
  late AuthController controller;
  final etEmail = TextEditingController();
  final etPassword = TextEditingController();

  bool loading = false;

  @override
  void initState() {
    WidgetsBinding.instance.addPostFrameCallback((_) {
      controller = AuthProvider.controllerOf(context);
    });
    super.initState();
  }

  void login() async {
    final email = etEmail.text;
    final password = etPassword.text;
    controller
        .signInByEmail(EmailAuthenticator(email: email, password: password))
        .onStatus(indicatorVisible);
  }

  void register() async {
    final email = etEmail.text;
    final password = etPassword.text;
    controller
        .signUpByEmail(EmailAuthenticator(email: email, password: password))
        .onStatus(indicatorVisible);
  }

  void indicatorVisible(bool value) {
    setState(() => loading = value);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("Login"),
      ),
      body: Builder(builder: (context) {
        if (loading) {
          return const Center(child: CircularProgressIndicator());
        }
        return Container(
          width: double.infinity,
          height: double.infinity,
          alignment: Alignment.center,
          padding: const EdgeInsets.all(32),
          child: Column(
            children: [
              TextField(
                controller: etEmail,
                keyboardType: TextInputType.emailAddress,
                decoration: const InputDecoration(
                  hintText: "Email",
                ),
              ),
              const SizedBox(height: 24),
              TextField(
                controller: etPassword,
                keyboardType: TextInputType.visiblePassword,
                obscureText: true,
                decoration: const InputDecoration(
                  hintText: "Password",
                ),
              ),
              const SizedBox(height: 32),
              SizedBox(
                width: double.infinity,
                child: ElevatedButton(
                  onPressed: () {
                    login();
                  },
                  child: const Text("Login"),
                ),
              ),
              const SizedBox(height: 24),
              SizedBox(
                width: double.infinity,
                child: ElevatedButton(
                  onPressed: () {
                    register();
                  },
                  child: const Text("Register"),
                ),
              ),
            ],
          ),
        );
      }),
    );
  }
}

Create Home screen

import 'package:auth_management/core.dart';
import 'package:flutter/material.dart';

class HomePage extends StatefulWidget {
  const HomePage({super.key});

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  late AuthController controller;

  @override
  void initState() {
    WidgetsBinding.instance.addPostFrameCallback((_) {
      controller = AuthProvider.controllerOf(context);
    });
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
        child: Container(
          padding: const EdgeInsets.all(32),
          alignment: Alignment.center,
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              Text(
                "Home",
                style: Theme.of(context).textTheme.bodyLarge,
              ),
              const SizedBox(height: 24),
              SizedBox(
                width: double.infinity,
                child: ElevatedButton(
                  onPressed: () {
                    controller.signOut();
                  },
                  child: const Text("Logout"),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}