GUYCOM_FLUTTER/lib/Views/loginPage.dart

import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:youmazgestion/Views/particles.dart' show ParticleBackground;
import 'package:youmazgestion/accueil.dart';
import 'package:youmazgestion/Services/authDatabase.dart';

import '../Models/users.dart';
import '../controller/userController.dart';

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

  @override
  _LoginPageState createState() => _LoginPageState();
}

class _LoginPageState extends State<LoginPage> {
  late TextEditingController _usernameController;
  late TextEditingController _passwordController;
  final UserController userController = Get.put(UserController());
  bool _isErrorVisible = false;

  @override
  void initState() {
    super.initState();
    _usernameController = TextEditingController();
    _passwordController = TextEditingController();
    checkUserCount();
  }

  void checkUserCount() async {
    final userCount = await AuthDatabase.instance.getUserCount();
    if (userCount == 0) {
      // No user found, redirect to home page
      Navigator.pushReplacement(
        context,
        MaterialPageRoute(builder: (context) => const AccueilPage()),
      );
    }
  }

  @override
  void dispose() {
    _usernameController.dispose();
    _passwordController.dispose();
    super.dispose();
  }
Future<void> saveUser(String? username,String? role)async{
      final prefs = await SharedPreferences.getInstance();
      await prefs.setString('username', username!);
      await prefs.setString('role', role!);
}
  void _login() async {
    final String username = _usernameController.text;
    final String password = _passwordController.text;
    print(username);
    print(password);

    try {
      bool isValidUser =
          await AuthDatabase.instance.verifyUser(username, password);
      Users user = await AuthDatabase.instance.getUser(username);

      Map<String, String>? getUserCredentials = await AuthDatabase.instance.getUserCredentials(username,password);
      print(isValidUser);
      if (isValidUser) {
        print('User is valid');
        print(user);
        userController.setUser(user);
        
        setState(() {
          _isErrorVisible = false;
        });
        Navigator.pushReplacement(
          context,
          MaterialPageRoute(builder: (context) => const AccueilPage()),
        );
        saveUser(getUserCredentials?['username'], getUserCredentials?['role']);
      } else {
        setState(() {
          _isErrorVisible = true;
        });
      }
    } catch (error) {
      print(error);
      setState(() {
        _isErrorVisible = true;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text(
          'Login',
          style: TextStyle(color:Colors.white),
          ),
        backgroundColor: const Color.fromARGB(255, 4, 54, 95),
        centerTitle: true,
      ),
      body: ParticleBackground(
        child: Center(
          child: Container(
            width: MediaQuery.of(context).size.width * 0.5,
            height: MediaQuery.of(context).size.height * 0.8,
            padding: const EdgeInsets.all(16.0),
            decoration: BoxDecoration(
              color: Colors.white,
              shape: BoxShape.rectangle,
              borderRadius: BorderRadius.circular(30.0),
            ),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.stretch,
              children: [
                Container(
                  padding: const EdgeInsets.symmetric(vertical: 16.0),
                  child: const Icon(
                    Icons.lock_outline,
                    size: 100.0,
                    color: Color.fromARGB(255, 4, 54, 95),
                  ),
                ),
                TextField(
                  controller: _usernameController,
                  decoration: InputDecoration(
                    labelText: 'Username',
                    prefixIcon:
                        const Icon(Icons.person, color: Colors.blueAccent),
                    border: OutlineInputBorder(
                      borderRadius: BorderRadius.circular(30.0),
                    ),
                  ),
                ),
                const SizedBox(height: 16.0),
                TextField(
                  controller: _passwordController,
                  decoration: InputDecoration(
                    labelText: 'Password',
                    prefixIcon: const Icon(Icons.lock, color: Colors.redAccent),
                    border: OutlineInputBorder(
                      borderRadius: BorderRadius.circular(30.0),
                    ),
                  ),
                  obscureText: true,
                ),
                const SizedBox(height: 16.0),
                Visibility(
                  visible: _isErrorVisible,
                  child: const Text(
                    'Invalid username or password',
                    style: TextStyle(
                      color: Colors.red,
                    ),
                  ),
                ),
                const SizedBox(height: 16.0),
                ElevatedButton(
                  onPressed: _login,
                  style: ElevatedButton.styleFrom(
                    backgroundColor: const Color(0xFF0015B7), // Nouvelle couleur
                    elevation: 5.0,
                    shape: RoundedRectangleBorder(
                      borderRadius: BorderRadius.circular(30.0),
                    ),
                  ),
                  child: const Text(
                    'Login',
                    style: TextStyle(
                      color: Colors.white,
                    ),
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}