Start to display banner

lib/helpers/server_config_helper.dart

@@ -17,6 +17,7 @@ class ServerConfigurationHelper {
         (await APIRequest.withoutLogin("server/config").execWithThrow())
             .getObject();
 
+    final banner = response["banner"];
     final pushNotificationsPolicy = response["push_notifications"];
     final passwordPolicy = response["password_policy"];
     final dataConservationPolicy = response["data_conservation_policy"];
@@ -31,6 +32,15 @@ class ServerConfigurationHelper {
       contactEmail: response["contact_email"],
       playStoreURL: response["play_store_url"],
       androidDirectDownloadURL: response["android_direct_download_url"],
+      banner: banner == null
+          ? null
+          : Banner(
+              enabled: banner["enabled"],
+              expire: banner["expire"],
+              nature: BannerNatureExt.fromStr(banner["nature"]),
+              message: Map<String, dynamic>.from(banner["message"])
+                  .map((key, value) => MapEntry(key, value.toString())),
+              link: banner["link"]),
       notificationsPolicy: NotificationsPolicy(
         hasFirebase: pushNotificationsPolicy["has_firebase"],
         hasIndependent: pushNotificationsPolicy["has_independent"],
@@ -98,3 +108,5 @@ class ServerConfigurationHelper {
 
 /// Shortcut for server configuration
 ServerConfig get srvConfig => ServerConfigurationHelper.config;
+
+bool get showBanner => srvConfig.banner != null && srvConfig.banner.visible;

lib/models/server_config.dart

@@ -1,3 +1,4 @@
+import 'package:comunic/utils/date_utils.dart';
 import 'package:flutter/widgets.dart';
 import 'package:version/version.dart';
 
@@ -132,6 +133,42 @@ class AccountInformationPolicy {
         assert(maxLocationLength != null);
 }
 
+enum BannerNature { Information, Warning, Success }
+
+extension BannerNatureExt on BannerNature {
+  static BannerNature fromStr(String s) {
+    switch (s) {
+      case "information":
+        return BannerNature.Information;
+      case "success":
+        return BannerNature.Success;
+      case "warning":
+      default:
+        return BannerNature.Warning;
+    }
+  }
+}
+
+class Banner {
+  final bool enabled;
+  final int expire;
+  final BannerNature nature;
+  final Map<String, String> message;
+  final String link;
+
+  const Banner({
+    @required this.enabled,
+    @required this.expire,
+    @required this.nature,
+    @required this.message,
+    @required this.link,
+  })  : assert(enabled != null),
+        assert(nature != null),
+        assert(message != null);
+
+  bool get visible => enabled && (expire == null || expire > time());
+}
+
 class ServerConfig {
   final Version minSupportedMobileVersion;
   final String termsURL;
@@ -139,6 +176,7 @@ class ServerConfig {
   final String contactEmail;
   final String playStoreURL;
   final String androidDirectDownloadURL;
+  final Banner banner;
   final NotificationsPolicy notificationsPolicy;
   final PasswordPolicy passwordPolicy;
   final ServerDataConservationPolicy dataConservationPolicy;
@@ -152,6 +190,7 @@ class ServerConfig {
     @required this.contactEmail,
     @required this.playStoreURL,
     @required this.androidDirectDownloadURL,
+    @required this.banner,
     @required this.notificationsPolicy,
     @required this.passwordPolicy,
     @required this.dataConservationPolicy,

lib/ui/routes/main_route/smartphone_route.dart

@@ -1,6 +1,7 @@
 import 'package:comunic/ui/routes/main_route/main_route.dart';
 import 'package:comunic/ui/routes/main_route/page_info.dart';
 import 'package:comunic/ui/screens/notifications_screen.dart';
+import 'package:comunic/ui/widgets/banner_widget.dart';
 import 'package:comunic/ui/widgets/mobile_mode/mobile_appbar_widget.dart';
 import 'package:flutter/material.dart';
 
@@ -33,7 +34,14 @@ class _MainRouteState extends MainController {
             appBar: currentPage.hideNavBar
                 ? null
                 : ComunicMobileAppBar(currentPage: currentPage),
-            body: SafeArea(key: currentPage.key, child: currentPage.child),
+            body: SafeArea(
+                key: currentPage.key,
+                child: Column(
+                  children: [
+                    BannerWidget(),
+                    Expanded(child: currentPage.child)
+                  ],
+                )),
           ),
         ),
       ),

lib/ui/widgets/banner_widget.dart

@@ -0,0 +1,89 @@
+import 'package:comunic/helpers/server_config_helper.dart';
+import 'package:comunic/models/server_config.dart';
+import 'package:comunic/utils/intl_utils.dart';
+import 'package:flutter/material.dart';
+import 'package:url_launcher/url_launcher.dart';
+
+bool _bannerDismissed = false;
+
+class BannerWidget extends StatefulWidget {
+  const BannerWidget({Key key}) : super(key: key);
+
+  @override
+  _BannerWidgetState createState() => _BannerWidgetState();
+}
+
+class _BannerWidgetState extends State<BannerWidget> {
+  void _hideBanner() {
+    setState(() => _bannerDismissed = true);
+  }
+
+  void _openLink() {
+    launch(srvConfig.banner.link);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (!showBanner || _bannerDismissed) return Container();
+
+    final banner = srvConfig.banner;
+    return Card(
+      color: banner.nature == BannerNature.Information
+          ? Colors.blue
+          : banner.nature == BannerNature.Success
+              ? Colors.green
+              : Colors.red,
+      child: Padding(
+        padding: const EdgeInsets.all(2.0),
+        child: Row(
+          children: [
+            BannerButton(
+              icon: Icon(
+                banner.nature == BannerNature.Information
+                    ? Icons.info
+                    : banner.nature == BannerNature.Success
+                        ? Icons.check
+                        : Icons.warning,
+              ),
+            ),
+            Flexible(
+              child: Text(
+                banner.message.containsKey(lang())
+                    ? banner.message[lang()]
+                    : banner.message["en"],
+                style: TextStyle(color: Colors.white),
+              ),
+            ),
+            banner.link == null
+                ? Container()
+                : BannerButton(
+                    onPressed: _openLink,
+                    icon: Icon(Icons.open_in_new),
+                  ),
+            BannerButton(
+              onPressed: _hideBanner,
+              icon: Icon(Icons.close),
+            )
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class BannerButton extends StatelessWidget {
+  final Function() onPressed;
+  final Widget icon;
+
+  const BannerButton({this.onPressed, this.icon, Key key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return IconButton(
+      onPressed: onPressed,
+      icon: icon,
+      disabledColor: Colors.white,
+      padding: EdgeInsets.all(1.0),
+    );
+  }
+}

lib/utils/intl_utils.dart

@@ -48,3 +48,8 @@ String tr(String string, {Map<String, String> args}) {
 
   return string;
 }
+
+/// Get current lang
+String lang() {
+  return _currLang != null ? _currLang : "en";
+}