Initial Commit

lib/main.dart

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+import 'package:flutter/material.dart';
+import 'views/home_screen.dart';
+import 'views/profile_screen.dart';
+import 'views/login_screen.dart';
+import 'methods/api.dart';
+import 'views/init_screen.dart';
+
+void main() {
+  runApp(const MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: '42 API Client',
+      initialRoute: '/',
+      routes: {
+        '/': (context) => const InitScreen(),
+        '/home': (context) => HomeScreen(),
+        '/login': (context) => const LoginScreen(),
+        '/profile': (context) => const ProfileScreen(),
+      },
+    );
+  }
+}

lib/methods/api.dart

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+import 'package:shared_preferences/shared_preferences.dart';
+
+Future<bool> checkToken() async
+{
+  final prefs = await SharedPreferences.getInstance();
+  return prefs.containsKey('user_token');
+}
+
+Future<void> saveToken(String token) async
+{
+  final prefs = await SharedPreferences.getInstance();
+  await prefs.setString('user_token', token);
+}
+
+Future<String?> getToken() async
+{
+  final exists = await checkToken();
+  if (exists) {
+    final prefs = await SharedPreferences.getInstance();
+    final token = prefs.getString('user_token');
+    return token;
+  }
+  return "";
+}

lib/views/home_screen.dart

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+// home_screen.dart
+import 'package:flutter/material.dart';
+
+class HomeScreen extends StatelessWidget {
+  const HomeScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: const Text("Home")),
+      body: Center(
+        child: ElevatedButton(
+          onPressed: () {
+            Navigator.pushNamed(context, '/profile');
+          },
+          child: const Text('Go to Profile'),
+        ),
+      ),
+    );
+  }
+}

lib/views/init_screen.dart

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+
+import 'package:flutter/material.dart';
+import '../methods/api.dart';
+import 'package:flutter_dotenv/flutter_dotenv.dart';
+
+Future<bool> initApp() async {
+  return await checkToken();
+}
+class InitScreen extends StatelessWidget {
+  const InitScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(),
+      body: FutureBuilder<bool?> (
+        future: initApp(),
+        builder: (context, snapshot)
+        {
+          if (snapshot.hasError){
+            return Center(
+              child: Text('Error: ${snapshot.error}'),
+            );
+          }
+          switch (snapshot.connectionState)
+          {
+            case ConnectionState.waiting:
+              return Center(
+                child: Image(
+                  image: AssetImage("assets/images/42_logo.png"),
+                  width: 100,
+                  height: 100,
+                ),
+              );
+            case ConnectionState.done:
+              if (snapshot.data == true) {
+                Future.microtask(() {
+                  Navigator.pushReplacementNamed(context, '/home');
+                });
+              }
+              else
+                {
+                  Future.microtask(() {
+                    Navigator.pushReplacementNamed(context, '/login');
+                  });
+                }
+              return Center(
+                child: Text(
+                    (snapshot.data == true) ? "1" : "0"
+                )
+              );
+            default:
+              Future.microtask(() {
+              Navigator.pushReplacementNamed(context, '/login');
+            });
+              return Center(
+                  child: Text(
+                      "Redirect"
+                  )
+              );
+          }
+        }
+    ),
+    );
+  }
+}

lib/views/login_screen.dart

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+
+import 'package:flutter/material.dart';
+import 'package:flutter_appauth/flutter_appauth.dart';
+import 'package:flutter_dotenv/flutter_dotenv.dart';
+
+const FlutterAppAuth _appAuth = FlutterAppAuth();
+
+Future<void> redirect_to_oauth(BuildContext context) async {
+  final String _clientId = dotenv.env['CLIENT-ID'] ?? '';
+  final String _clientSecret = dotenv.env['CLIENT-SECRET'] ?? '';
+  final String _redirectUrl = 'swifty-companion://oauth2/callback';
+  final String _authorizationEndpoint = 'https://api.intra.42.fr/oauth/authorize';
+  final String _tokenEndpoint = 'https://api.intra.42.fr/oauth/token';
+  final request = AuthorizationRequest(
+      _clientId,
+      _redirectUrl,
+      serviceConfiguration: AuthorizationServiceConfiguration(
+        authorizationEndpoint: _authorizationEndpoint,
+        tokenEndpoint: _tokenEndpoint,
+      ));
+  print("swap");
+  try {
+    print("trying");
+    final AuthorizationResponse? result = await _appAuth.authorize(request);
+    print("tried");
+    if (result != null) {
+      print("nonull result");
+      Navigator.pushReplacementNamed(context, "/home");
+      print('Authorization Code: ${result.authorizationCode}');
+      final token_request = TokenRequest(
+        _clientId,
+        _redirectUrl,
+        clientSecret: _clientSecret,
+        authorizationCode: result.authorizationCode,
+        grantType: 'authorization_code',
+        serviceConfiguration: AuthorizationServiceConfiguration(
+          authorizationEndpoint: "https://api.intra.42.fr/oauth/authorize",
+          tokenEndpoint: _tokenEndpoint,
+        ),
+      );
+      print("pre token");
+      final TokenResponse? tokenResponse = await _appAuth.token(token_request);
+      print("token");
+      print(tokenResponse?.accessToken);
+      print(tokenResponse?.refreshToken);
+      // You can now use this code to exchange for an access token (via a separate API call to the token endpoint)
+    }
+  }
+  catch (e) {
+    print("error $e");
+  }
+}
+class LoginScreen extends StatelessWidget {
+  const LoginScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: const Text("Login")),
+      body: Center(
+        child: ElevatedButton(
+          onPressed: () {
+            redirect_to_oauth(context);
+          },
+          child: const Text('Login'),
+        ),
+      ),
+    );
+  }
+}

lib/views/profile_screen.dart

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+// profile_screen.dart
+import 'package:flutter/material.dart';
+
+class ProfileScreen extends StatelessWidget {
+  const ProfileScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: const Text("Profile")),
+      body: Center(
+        child: ElevatedButton(
+          onPressed: () {
+            Navigator.pushNamed(context, '/');
+          },
+          child: const Text('Go to Home'),
+        ),
+      ),
+    );
+  }
+}