feat: check for correct version

lib/config/constants.dart

@@ -1 +1,2 @@
 const apiBasePath = "bal.ueauvergne.fr/api";
+const apiVersion = 1;

lib/data/repositories/auth_repository.dart

@@ -39,4 +39,8 @@ class AuthRepository extends ChangeNotifier {
       return Result.error(Exception(e));
     }
   }
+
+  Future<Result<int>> getRemoteApiVersion() async {
+    return await _authClient.getRemoteApiVersion();
+  }
 }

lib/data/services/auth_client.dart

@@ -66,4 +66,23 @@ class AuthClient {
       client.close();
     }
   }
+
+  Future<Result<int>> getRemoteApiVersion() async {
+    final client = http.Client();
+    try {
+      final response = await client.get(
+        Uri.parse("https://$apiBasePath/version"),
+      );
+      if (response.statusCode == 200) {
+        final json = jsonDecode(response.body) as int;
+        return Result.ok(json);
+      } else {
+        throw "Something wrong happened";
+      }
+    } catch (e) {
+      return Result.error(Exception(e));
+    } finally {
+      client.close();
+    }
+  }
 }

lib/routing/router.dart

@@ -1,5 +1,6 @@
 import 'package:go_router/go_router.dart';
 import 'package:provider/provider.dart';
+import 'package:seshat/config/constants.dart';
 import 'package:seshat/data/repositories/auth_repository.dart';
 import 'package:seshat/routing/routes.dart';
 import 'package:seshat/ui/add_page/view_model/add_view_model.dart';
@@ -12,14 +13,24 @@ import 'package:seshat/ui/home_page/view_model/home_view_model.dart';
 import 'package:seshat/ui/home_page/widgets/home_page.dart';
 import 'package:seshat/ui/sell_page/view_model/sell_view_model.dart';
 import 'package:seshat/ui/sell_page/widgets/sell_page.dart';
+import 'package:seshat/utils/result.dart';
 
 GoRouter router(AuthRepository authRepository) => GoRouter(
   initialLocation: Routes.add,
   redirect: (context, state) async {
     final loggedIn = await context.read<AuthRepository>().isLoggedIn;
+    final result = await context.read<AuthRepository>().getRemoteApiVersion();
+    bool isUpToDate = false;
+    switch (result) {
+      case Ok():
+        isUpToDate = result.value == apiVersion;
+        break;
+      default:
+        break;
+    }
     final logginIn = state.matchedLocation == Routes.login;
 
-    if (!loggedIn) {
+    if (!loggedIn || !isUpToDate) {
       return Routes.login;
     }
 

lib/ui/auth/viewmodel/login_view_model.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:seshat/config/constants.dart';
 import 'package:seshat/data/repositories/auth_repository.dart';
 import 'package:seshat/utils/command.dart';
 import 'package:seshat/utils/result.dart';
@@ -7,6 +8,7 @@ class LoginViewModel extends ChangeNotifier {
   LoginViewModel({required AuthRepository authRepository})
     : _authRepository = authRepository {
     login = Command1<void, (String username, String password)>(_login);
+    load = Command0(_load)..execute();
   }
 
   final AuthRepository _authRepository;
@@ -18,4 +20,39 @@ class LoginViewModel extends ChangeNotifier {
     final result = await _authRepository.login(username, password);
     return result;
   }
+
+  /*
+ * =================================
+ * =====[ COMMAND AND LOADING ]=====
+ * =================================
+*/
+
+  late final Command0 load;
+  bool isLoaded = false;
+  bool isUpToDate = false;
+
+  Future<Result<void>> _load() async {
+    final result1 = await _loadApiVersion();
+    switch (result1) {
+      case Ok():
+        isLoaded = true;
+        break;
+      default:
+        break;
+    }
+    notifyListeners();
+    return result1;
+  }
+
+  Future<Result<void>> _loadApiVersion() async {
+    final result = await _authRepository.getRemoteApiVersion();
+    switch (result) {
+      case Ok():
+        isUpToDate = result.value == apiVersion;
+        break;
+      default:
+        break;
+    }
+    return result;
+  }
 }

lib/ui/auth/widgets/login_page.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 import 'package:seshat/routing/routes.dart';
 import 'package:seshat/ui/auth/viewmodel/login_view_model.dart';
+import 'package:seshat/ui/core/ui/await_loading.dart';
 
 class LoginPage extends StatefulWidget {
   const LoginPage({super.key, required this.viewModel});
@@ -40,100 +41,104 @@ class _LoginPageState extends State<LoginPage> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      body: Center(
+      body: ListenableBuilder(
-        child: ListenableBuilder(
+        listenable: widget.viewModel,
-          listenable: widget.viewModel.login,
+        builder: (context, child) => switch (widget.viewModel.isLoaded) {
-          builder: (context, child) {
+          false => AwaitLoading(),
-            return Form(
+          true => switch (widget.viewModel.isUpToDate) {
-              key: _formKey,
+            false => Center(
-              child: SingleChildScrollView(
+              child: SizedBox(
-                child: SizedBox(
+                width: 300,
-                  width: 300,
+                child: Text(
-                  child: Column(
+                  "L'application que vous utilisez n'est pas à jour. Si aucune mise à jour n'est disponible, contactez dev@ueauvergne.fr",
-                    mainAxisSize: MainAxisSize.min,
-                    crossAxisAlignment: CrossAxisAlignment.center,
-                    mainAxisAlignment: MainAxisAlignment.center,
-                    children: [
-                      Text("Bienvenue", style: TextStyle(fontSize: 40)),
-                      SizedBox(height: 50),
-                      TextFormField(
-                        decoration: InputDecoration(
-                          labelText: "Identifiant de section",
-                          border: OutlineInputBorder(),
-                        ),
-                        validator: (value) {
-                          if (value == null || value.isEmpty) {
-                            return "Veuillez entrer un identifiant";
-                          }
-                          return null;
-                        },
-                        onSaved: (newValue) {
-                          username = newValue!;
-                        },
-                      ),
-                      SizedBox(height: 10),
-                      TextFormField(
-                        decoration: InputDecoration(
-                          labelText: "Mot de passe",
-                          border: OutlineInputBorder(),
-                          suffixIcon: IconButton(
-                            onPressed: () {
-                              setState(() {
-                                hidePassword = !hidePassword;
-                              });
-                            },
-                            icon: Icon(
-                              (hidePassword)
-                                  ? Icons.visibility
-                                  : Icons.visibility_off,
-                            ),
-                          ),
-                        ),
-                        obscureText: hidePassword,
-                        enableSuggestions: false,
-                        autocorrect: false,
-                        validator: (value) {
-                          if (value == null || value.isEmpty) {
-                            return "Veuillez entrer un mot de passe";
-                          }
-                          return null;
-                        },
-                        onSaved: (newValue) {
-                          password = newValue!;
-                        },
-                      ),
-                      SizedBox(height: 10),
-                      ElevatedButton(
-                        onPressed: () {
-                          _formKey.currentState!.validate();
-                          _formKey.currentState!.save();
-                          widget.viewModel.login.execute((username, password));
-                        },
-                        child: Text("Valider"),
-                      ),
-                    ],
-                  ),
                 ),
               ),
-            );
+            ),
+            true => Center(
+              child: ListenableBuilder(
+                listenable: widget.viewModel.login,
+                builder: (context, child) {
+                  return Form(
+                    key: _formKey,
+                    child: SingleChildScrollView(
+                      child: SizedBox(
+                        width: 300,
+                        child: Column(
+                          mainAxisSize: MainAxisSize.min,
+                          crossAxisAlignment: CrossAxisAlignment.center,
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: [
+                            Text("Bienvenue", style: TextStyle(fontSize: 40)),
+                            SizedBox(height: 50),
+                            TextFormField(
+                              decoration: InputDecoration(
+                                labelText: "Identifiant de section",
+                                border: OutlineInputBorder(),
+                              ),
+                              validator: (value) {
+                                if (value == null || value.isEmpty) {
+                                  return "Veuillez entrer un identifiant";
+                                }
+                                return null;
+                              },
+                              onSaved: (newValue) {
+                                username = newValue!;
+                              },
+                            ),
+                            SizedBox(height: 10),
+                            TextFormField(
+                              decoration: InputDecoration(
+                                labelText: "Mot de passe",
+                                border: OutlineInputBorder(),
+                                suffixIcon: IconButton(
+                                  onPressed: () {
+                                    setState(() {
+                                      hidePassword = !hidePassword;
+                                    });
+                                  },
+                                  icon: Icon(
+                                    (hidePassword)
+                                        ? Icons.visibility
+                                        : Icons.visibility_off,
+                                  ),
+                                ),
+                              ),
+                              obscureText: hidePassword,
+                              enableSuggestions: false,
+                              autocorrect: false,
+                              validator: (value) {
+                                if (value == null || value.isEmpty) {
+                                  return "Veuillez entrer un mot de passe";
+                                }
+                                return null;
+                              },
+                              onSaved: (newValue) {
+                                password = newValue!;
+                              },
+                            ),
+                            SizedBox(height: 10),
+                            ElevatedButton(
+                              onPressed: () {
+                                if (_formKey.currentState!.validate()) {
+                                  _formKey.currentState!.save();
+                                  widget.viewModel.login.execute((
+                                    username,
+                                    password,
+                                  ));
+                                }
+                              },
+                              child: Text("Valider"),
+                            ),
+                          ],
+                        ),
+                      ),
+                    ),
+                  );
+                },
+              ),
+            ),
           },
-        ),
+        },
-        // TextField(controller: _username),
-        // TextField(controller: _password),
-        // ListenableBuilder(
-        //   listenable: widget.viewModel.login,
-        //   builder: (context, child) {
-        //     return FilledButton(
-        //       onPressed: () {
-        //         widget.viewModel.login.execute((
-        //           _username.value.text,
-        //           _password.value.text,
-        //         ));
-        //       },
-        //       child: Text("Connexion"),
-        //     );
-        //   },
-        // ),
       ),
     );
   }