Aitrainer_app 1.1.0

Login and Registraion

lib/model/auth.dart

@@ -0,0 +1,105 @@
+import 'package:aitrainer_app/model/customer.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+enum SharePrefsChange {
+  login,
+  registration,
+  logout,
+}
+/*
+  Auth flow of the app
+  1. During the login screen the authentication will be executed
+    - if not successful: message: Network error, try again later
+    - if successful
+      - get the stored shared preferences and customer id
+        - if customer_id not present -> registration page
+        - if present, check if the expiration_date > 10 days -> login page
+        - else get the API customer by the stored customer_id
+      - After registration / login store the preferences:
+        - AuthToken
+        - customer_id
+        - last_store_date
+        - is_registered
+        - is_logged_in
+ */
+
+class Auth {
+  static final Auth _singleton = Auth._internal();
+
+  // Keys to store and fetch data from SharedPreferences
+  static final String authTokenKey = 'auth_token';
+  static final String customerIdKey = 'customer_id';
+  static final String lastStoreDateKey = 'last_date';
+  static final String isRegisteredKey = 'is_registered';
+  static final String isLoggedInKey = 'is_logged_in';
+
+  static final String _baseUrl = 'http://andio.eu:8888/api/';
+  static final String username = 'bosi';
+  static final String password = 'andio2009';
+
+  String authToken = "";
+  Customer userLoggedIn;
+  bool firstLoad = true;
+
+  factory Auth() {
+    return _singleton;
+  }
+
+  Auth._internal();
+
+  String getAuthToken() {
+    return this.authToken;
+  }
+
+  static String getToken(SharedPreferences prefs) {
+    return prefs.getString(authTokenKey);
+  }
+
+  static String getBaseUrl() {
+    return _baseUrl;
+  }
+
+  afterRegistration(Customer customer) {
+    Future<SharedPreferences> prefs = SharedPreferences.getInstance();
+
+    userLoggedIn = customer;
+    setPreferences(prefs, SharePrefsChange.registration, customer.customerId);
+  }
+
+  afterLogin(Customer customer) {
+    Future<SharedPreferences> prefs = SharedPreferences.getInstance();
+
+    userLoggedIn = customer;
+    setPreferences(prefs, SharePrefsChange.login, customer.customerId);
+  }
+
+  logout(){
+    userLoggedIn = null;
+    authToken = "";
+    //firstLoad = true;
+    Future<SharedPreferences> prefs = SharedPreferences.getInstance();
+    setPreferences(prefs, SharePrefsChange.logout, 0);
+  }
+
+  setPreferences(Future<SharedPreferences> prefs,
+                SharePrefsChange type,
+                int customerId) async {
+    SharedPreferences sharedPreferences;
+    sharedPreferences = await prefs;
+
+    DateTime now = DateTime.now();
+    sharedPreferences.setString(Auth.lastStoreDateKey, now.toString());
+    if ( type == SharePrefsChange.registration ) {
+      sharedPreferences.setInt(Auth.customerIdKey, customerId);
+      sharedPreferences.setBool(Auth.isRegisteredKey, true);
+      sharedPreferences.setBool(Auth.isLoggedInKey, true);
+    } else if ( type == SharePrefsChange.login ) {
+
+      sharedPreferences.setInt(Auth.customerIdKey, customerId);
+      sharedPreferences.setBool(Auth.isLoggedInKey, true);
+    } else if ( type == SharePrefsChange.login ) {
+      sharedPreferences.setBool(Auth.isLoggedInKey, false);
+      sharedPreferences.setInt(Auth.customerIdKey, 0);
+    }
+  }
+}

lib/model/customer.dart

@@ -6,9 +6,10 @@ class Customer {
    int age;
    String active;
    int customerId;
+   String password;
 
 
-  Customer({this.customerId, this.name, this.firstName, this.email, this.sex, this.age, this.active});
+  Customer({this.customerId, this.name, this.firstName, this.email, this.sex, this.age, this.active, this.password});
 
   Customer.fromJson(Map json) {
     this.customerId = json['customer_id'];
@@ -27,6 +28,7 @@ class Customer {
          "email": email,
          "age": age,
          "sex": sex,
-         "active": 'Y'
+         "active": 'Y',
+         "password": password,
        };
 }

lib/model/user.dart

@@ -0,0 +1,15 @@
+class User {
+   String email;
+   String password;
+   int customerId;
+
+
+  User({this.customerId, this.email, this.password});
+
+
+   Map<String, dynamic> toJson() =>
+       {
+         "username": email,
+         "password": password,
+       };
+}