Remember me + encrypt password in json file !

lib/Components/rounded_input_field.dart

@@ -9,6 +9,7 @@ class RoundedInputField extends StatelessWidget {
   final String initialValue;
   final Color color, textColor, iconColor;
   final int maxLength;
+  final bool isEmail;
   const RoundedInputField({
     Key key,
     this.hintText,
@@ -19,6 +20,7 @@ class RoundedInputField extends StatelessWidget {
     this.iconColor = kPrimaryColor,
     this.onChanged,
     this.maxLength, // 50
+    this.isEmail = false
   }) : super(key: key);
 
   @override
@@ -30,6 +32,7 @@ class RoundedInputField extends StatelessWidget {
         initialValue: initialValue,
         cursorColor: textColor,
         maxLength: maxLength,
+        keyboardType: isEmail ? TextInputType.emailAddress : TextInputType.text,
         style: TextStyle(fontSize: 20, color: textColor),
         decoration: InputDecoration(
           icon: icon != null ? Icon(

lib/Components/rounded_password_field.dart

@@ -4,9 +4,11 @@ import 'package:manager_app/constants.dart';
 
 class RoundedPasswordField extends StatefulWidget {
   final ValueChanged<String> onChanged;
+  final String initialValue;
   const RoundedPasswordField({
     Key key,
     this.onChanged,
+    this.initialValue,
   }) : super(key: key);
 
   @override
@@ -19,9 +21,10 @@ class _RoundedPasswordFieldState extends State<RoundedPasswordField> {
   @override
   Widget build(BuildContext context) {
     return TextFieldContainer(
-      child: TextField(
+      child: TextFormField(
         obscureText: isVisible,
         onChanged: widget.onChanged,
+        initialValue: widget.initialValue,
         cursorColor: kPrimaryColor,
         style: TextStyle(fontSize: 20, color: kBlack),
         decoration: InputDecoration(

lib/Helpers/SessionHelper.dart

@@ -1,10 +1,15 @@
+import 'dart:convert';
 import 'dart:io';
 
+import 'package:encrypt/encrypt.dart';
 import 'package:manager_app/Models/session.dart';
 import 'package:path_provider/path_provider.dart';
 
 class SessionHelper {
-  // TODO instance LOAD FILE..
+  final key = Key.fromUtf8('aVs:ZMe3EK-yS<y:;k>vCGrj3T8]yG6E');
+  final iv = IV.fromLength(16);
+
+
   Future<String> get _localPath async {
     final directory = await getApplicationDocumentsDirectory();
 
@@ -19,21 +24,40 @@ class SessionHelper {
   Future<File> writeSession(Session session) async {
     final file = await _localFile;
 
+    if (session.password != null) {
+      var encrypter = Encrypter(AES(key));
+      var encrypted = encrypter.encrypt(session.password, iv: iv);
+
+      session.password = encrypted.base64;
+    }
     // Write the file
-    return file.writeAsString(session.toString());
+    return file.writeAsString(jsonEncode(session.toMap()));
   }
 
-  Future<int> readSession() async {
+  Future<Session> readSession() async {
     try {
       final file = await _localFile;
-
       // Read the file
       final contents = await file.readAsString();
 
-      return int.parse(contents);
+      Session session = Session.fromJson(jsonDecode(contents));
+
+      var encrypter = Encrypter(AES(key));
+
+      if (session.password != null) {
+        session.password = encrypter.decrypt64(session.password, iv: iv);
+      }
+
+      return session;
     } catch (e) {
+      if (e.toString().contains("cannot find the file")) {
+        final path = await _localPath;
+        new File('$path/session.json').createSync(recursive: true);
+        print("file created");
+        await writeSession(new Session(rememberMe: false));
+      }
       // If encountering an error, return 0
-      return 0;
+      return Session(rememberMe: false);
     }
   }
 }

lib/Models/managerContext.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:manager_app/Models/session.dart';
 import 'package:manager_app/client.dart';
 import 'package:managerapi/api.dart';
 

lib/Models/session.dart

@@ -1,14 +1,14 @@
 class Session {
-  bool isRememberMe;
+  bool rememberMe;
   String host;
   String email;
   String password;
 
-  Session({this.isRememberMe, this.host, this.email, this.password});
+  Session({this.rememberMe, this.host, this.email, this.password});
 
   factory Session.fromJson(Map<String, dynamic> json) {
     return new Session(
-      isRememberMe: json['isRememberMe'] as bool,
+      rememberMe: json['rememberMe'] as bool,
       host: json['host'] as String,
       email: json['email'] as String,
       password: json['password'] as String
@@ -17,7 +17,7 @@ class Session {
 
   Map<String, dynamic> toMap() {
     return {
-      'isRememberMe': isRememberMe,
+      'rememberMe': rememberMe,
       'host': host,
       'email': email,
       'password': password
@@ -26,6 +26,6 @@ class Session {
 
   @override
   String toString() {
-    return '{isRememberMe: $isRememberMe, host: $host, email: $email, password: $password}';
+    return '{rememberMe: $rememberMe, host: $host, email: $email, password: $password}';
   }
 }

lib/Screens/Main/components/body.dart

@@ -12,6 +12,7 @@ import 'package:manager_app/Screens/Resources/resources_screen.dart';
 import 'package:manager_app/Screens/login_screen.dart';
 import 'package:manager_app/app_context.dart';
 import 'package:manager_app/constants.dart';
+import 'package:manager_app/main.dart';
 import 'package:provider/provider.dart';
 
 
@@ -129,7 +130,9 @@ class _BodyState extends State<Body> {
                           ),
                           IconButton(
                             icon: Icon(Icons.logout),
-                            onPressed: () {
+                            onPressed: () async {
+                              var session = await loadJsonSessionFile();
+
                               setState(() {
                                 print("Logout");
                                 ManagerAppContext managerAppContext = appContext.getContext();
@@ -140,7 +143,7 @@ class _BodyState extends State<Body> {
                                     context,
                                     MaterialPageRoute(
                                       builder: (context) {
-                                        return LoginScreen();
+                                        return LoginScreen(session: session);
                                       },
                                     ),
                                         (Route<dynamic> route) => false // For pushAndRemoveUntil

lib/Screens/login_screen.dart

@@ -1,24 +1,22 @@
-import 'dart:convert';
-import 'dart:io';
-
 import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
 import 'package:manager_app/Components/loading.dart';
 import 'package:manager_app/Components/message_notification.dart';
 import 'package:manager_app/Components/rounded_button.dart';
 import 'package:manager_app/Components/rounded_input_field.dart';
 import 'package:manager_app/Components/rounded_password_field.dart';
+import 'package:manager_app/Helpers/SessionHelper.dart';
 import 'package:manager_app/Models/managerContext.dart';
+import 'package:manager_app/Models/session.dart';
 import 'package:manager_app/Screens/Main/main_screen.dart';
 import 'package:manager_app/app_context.dart';
 import 'package:manager_app/client.dart';
 import 'package:manager_app/constants.dart';
 import 'package:managerapi/api.dart';
-import 'package:path_provider/path_provider.dart';
 import 'package:provider/provider.dart';
 
 class LoginScreen extends StatefulWidget {
-  LoginScreen({Key key}) : super(key: key);
+  final Session session;
+  LoginScreen({Key key, this.session}) : super(key: key);
 
   @override
   _LoginScreenState createState() => _LoginScreenState();
@@ -39,7 +37,6 @@ class _LoginScreenState extends State<LoginScreen> {
 
     clientAPI = Client(this.host);
 
-    var isError = true;
     if (this.email != null && this.password != null && this.host != null) {
 
       // if () {} // Add if token exist and not null + not expired
@@ -55,12 +52,14 @@ class _LoginScreenState extends State<LoginScreen> {
         setAccessToken(token.accessToken);
 
         if (isRememberMe) {
+          Session updatedSession = new Session(rememberMe: isRememberMe, host: host, email: email, password: password);
+          print("REMBER ME TEST SESSIOn");
           // update JSON FILE
+          SessionHelper().writeSession(updatedSession);
         }
 
         showNotification(Colors.lightGreen, kWhite, 'Connexion réussie', context);
 
-        isError = false;
         // Set the appContext
         if (appContext.getContext() == null) {
           ManagerAppContext managerAppContext = new ManagerAppContext();
@@ -97,40 +96,6 @@ class _LoginScreenState extends State<LoginScreen> {
         });
       }
     }
-
-    if (!isError) {
-      /*UserDetailDTO user = await clientAPI.userApi.userGetDetail("6071f74aaf542f03116f2b9b");
-      print("user values ??");
-      print(user.email);
-      print(user.id);
-
-      List<ConfigurationDTO> configurations = await clientAPI.configurationApi.configurationGet();
-      print("number of configurations " + configurations.length.toString());
-      configurations.forEach((element) {
-        print(element);
-      });
-
-      /*List<SectionDTO> sections = await clientAPI.sectionApi.sectionGetFromConfiguration(id);
-      print("number of sections " + sections.length.toString());
-      sections.forEach((element) {
-        print(element);
-      });*/
-
-      SectionDTO section = await clientAPI.sectionApi.sectionGetDetail("60916249494b9eaf283b44f7");
-      print(section);
-
-      List<ResourceDTO> resources = await clientAPI.resourceApi.resourceGet();
-      print("number of resources " + resources.length.toString());
-      resources.forEach((element) {
-        print(element);
-      });
-
-      List<DeviceDTO> devices = await clientAPI.deviceApi.deviceGet();
-      print("number of devices " + devices.length.toString());
-      devices.forEach((element) {
-        print(element);
-      });*/
-    }
   }
 
   void setAccessToken(String accessToken) {
@@ -143,28 +108,23 @@ class _LoginScreenState extends State<LoginScreen> {
 
   @override
   void initState() {
-    _loadFromAsset();
+    this.isRememberMe = widget.session.rememberMe;
+    this.host = widget.session.host;
+    this.email = widget.session.email;
+    this.password = widget.session.password;
     super.initState();
   }
 
-  Future<String>_loadFromAsset() async { // TODO remove and use JsonHelper
-    return await rootBundle.loadString("assets/files/session.json");
-  }
-
   @override
   Widget build(BuildContext context) {
     final appContext = Provider.of<AppContext>(context);
     Size size = MediaQuery.of(context).size;
 
     return Scaffold(
-      body: FutureBuilder( // TODO REMOVE IT and replace by JSON Helper (load file in main) (to setState ok rememberMe)
+      body: Center(
-          future: loadJsonSessionFile(),
-          builder: (context, AsyncSnapshot<dynamic> snapshot) {
-            if (snapshot.connectionState == ConnectionState.done) {
-              return Center(
         child: SingleChildScrollView(
           child: Container(
-                    height: size.height *0.5,
+            height: size.height *0.65,
             width: size.width *0.5,
             decoration: BoxDecoration(
               color: kWhite,
@@ -188,6 +148,7 @@ class _LoginScreenState extends State<LoginScreen> {
                       onChanged: (value) {
                         host = value;
                       },
+                      initialValue: host,
                       icon: Icons.home
                   ),
                   RoundedInputField(
@@ -195,9 +156,12 @@ class _LoginScreenState extends State<LoginScreen> {
                       onChanged: (value) {
                         email = value;
                       },
-                              icon: Icons.person
+                      icon: Icons.person,
+                      initialValue: email,
+                      isEmail: true,
                   ),
                   RoundedPasswordField(
+                    initialValue: password,
                     onChanged: (value) {
                       password = value;
                     },
@@ -222,7 +186,7 @@ class _LoginScreenState extends State<LoginScreen> {
                       ],
                     ),
                   ),
-                          SizedBox(height: size.height * 0.02),
+                  SizedBox(height: size.height * 0.05),
                   !isLoading ? RoundedButton(
                     text: "LOGIN",
                     fontSize: 25,
@@ -238,45 +202,7 @@ class _LoginScreenState extends State<LoginScreen> {
             ),
           ),
         ),
-              );
-            } else if (snapshot.connectionState == ConnectionState.none) {
-              return Text("No data");
-            } else {
-              return Center(
-                  child: Container(
-                      height: size.height * 0.2,
-                      child: Loading()
       )
     );
   }
-          }
-      ),
-    );
-  }
-
-  Future loadJsonSessionFile() async { // TODO use jsonHelper in this method
-    String jsonString = await _loadFromAsset();
-    final jsonResponse = jsonDecode(jsonString);
-
-    try{
-      var rememberMeJson = jsonResponse.rememberMe != null ? jsonResponse.rememberMe : false;
-      var hostJson = jsonResponse.host;
-      var emailJson = jsonResponse.email;
-      var passwordJson = jsonResponse.password;
-
-      if (rememberMeJson && hostJson != null && emailJson != null && passwordJson != null) {
-        setState(() {
-          isRememberMe = rememberMeJson;
-          host = hostJson;
-          email = emailJson;
-          password = passwordJson;
-        });
-      }
-
-    } catch(Exception) {
-
-    }
-
-    print(jsonResponse);
-  }
 }

lib/main.dart

@@ -4,6 +4,8 @@ import 'package:manager_app/Models/managerContext.dart';
 import 'package:manager_app/Screens/Main/main_screen.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+import 'Helpers/SessionHelper.dart';
+import 'Models/session.dart';
 import 'Screens/login_screen.dart';
 import 'app_context.dart';
 import 'constants.dart';
@@ -21,8 +23,11 @@ Future<void> main() async {
 
   initialRoute = '/welcome';
 
+  var session = await loadJsonSessionFile();
+
   final MyApp myApp = MyApp(
     initialRoute: initialRoute,
+    session: session
     //context: localContext,
   );
 
@@ -31,8 +36,9 @@ Future<void> main() async {
 
 class MyApp extends StatefulWidget {
   final String initialRoute;
+  final Session session;
   final ManagerAppContext managerAppContext;
-  MyApp({this.initialRoute, this.managerAppContext});
+  MyApp({this.initialRoute, this.session, this.managerAppContext});
 
   // This widget is the root of your application.
   @override
@@ -60,7 +66,7 @@ class _MyAppState extends State<MyApp> {
             visualDensity: VisualDensity.adaptivePlatformDensity,
           ),
           routes: {
-            '/welcome': (context) => LoginScreen(),
+            '/welcome': (context) => LoginScreen(session: widget.session),
             '/main': (context) => MainScreen()
           }
       ),
@@ -68,3 +74,9 @@ class _MyAppState extends State<MyApp> {
   }
 }
 
+Future<Session> loadJsonSessionFile() async {
+  Session session = await SessionHelper().readSession();
+  print(session);
+  return session;
+}
+

pubspec.lock

@@ -1,6 +1,20 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  args:
+    dependency: transitive
+    description:
+      name: args
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.0"
+  asn1lib:
+    dependency: transitive
+    description:
+      name: asn1lib
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.2"
   async:
     dependency: transitive
     description:
@@ -64,13 +78,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "3.0.1"
-  crypt:
-    dependency: "direct main"
-    description:
-      name: crypt
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "4.0.1"
   crypto:
     dependency: transitive
     description:
@@ -106,6 +113,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.3.2"
+  encrypt:
+    dependency: "direct main"
+    description:
+      name: encrypt
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.0.0"
   fake_async:
     dependency: transitive
     description:
@@ -296,6 +310,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.1"
+  pointycastle:
+    dependency: transitive
+    description:
+      name: pointycastle
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.2.0"
   process:
     dependency: transitive
     description:

pubspec.yaml

@@ -38,7 +38,7 @@ dependencies:
   video_player: ^2.1.1
   drag_and_drop_lists: ^0.3.2
   path_provider: ^2.0.2
-  crypt: ^4.0.1
+  encrypt: ^5.0.0
   window_size:
     git:
       url: git://github.com/google/flutter-desktop-embedding.git