Start to integrate push notifications

lib/models/config.dart

@@ -1,25 +1,32 @@
+import 'dart:ui';
+
 import 'package:meta/meta.dart';
 
 /// Application configuration model
 ///
 /// @author Pierre HUBERT
 
+const defaultColor = Color(0xFF1A237E);
+
 /// Configuration class
 class Config {
   final String apiServerName;
   final String apiServerUri;
   final bool apiServerSecure;
   final String clientName;
+  final Color splashBackgroundColor;
 
   const Config({
     @required this.apiServerName,
     @required this.apiServerUri,
     @required this.apiServerSecure,
     @required this.clientName,
+    this.splashBackgroundColor = defaultColor,
   })  : assert(apiServerName != null),
         assert(apiServerUri != null),
         assert(apiServerSecure != null),
-        assert(clientName != null);
+        assert(clientName != null),
+        assert(splashBackgroundColor != null);
 
   /// Get and set static configuration
   static Config _config;

lib/models/server_config.dart

@@ -5,6 +5,17 @@ import 'package:version/version.dart';
 ///
 /// @author Pierre Hubert
 
+class NotificationsPolicy {
+  final bool hasFirebase;
+  final bool hasIndependent;
+
+  const NotificationsPolicy({
+    @required this.hasFirebase,
+    @required this.hasIndependent,
+  })  : assert(hasFirebase != null),
+        assert(hasIndependent != null);
+}
+
 class PasswordPolicy {
   final bool allowMailInPassword;
   final bool allowNameInPassword;
@@ -106,6 +117,7 @@ class ServerConfig {
   final String termsURL;
   final String playStoreURL;
   final String androidDirectDownloadURL;
+  final NotificationsPolicy notificationsPolicy;
   final PasswordPolicy passwordPolicy;
   final ServerDataConservationPolicy dataConservationPolicy;
   final ConversationsPolicy conversationsPolicy;
@@ -115,6 +127,7 @@ class ServerConfig {
     @required this.termsURL,
     @required this.playStoreURL,
     @required this.androidDirectDownloadURL,
+    @required this.notificationsPolicy,
     @required this.passwordPolicy,
     @required this.dataConservationPolicy,
     @required this.conversationsPolicy,
@@ -122,6 +135,7 @@ class ServerConfig {
         assert(termsURL != null),
         assert(playStoreURL != null),
         assert(androidDirectDownloadURL != null),
+        assert(notificationsPolicy != null),
         assert(passwordPolicy != null),
         assert(dataConservationPolicy != null),
         assert(conversationsPolicy != null);