Minor fixes for BF banner (#1499)

lib/generated/intl/messages_en.dart

@@ -347,6 +347,8 @@ class MessageLookup extends MessageLookupByLibrary {
         "backupSettings":
             MessageLookupByLibrary.simpleMessage("Backup settings"),
         "backupVideos": MessageLookupByLibrary.simpleMessage("Backup videos"),
+        "blackFridaySale":
+            MessageLookupByLibrary.simpleMessage("Black Friday Sale"),
         "blog": MessageLookupByLibrary.simpleMessage("Blog"),
         "cachedData": MessageLookupByLibrary.simpleMessage("Cached data"),
         "calculating": MessageLookupByLibrary.simpleMessage("Calculating..."),
@@ -1318,6 +1320,8 @@ class MessageLookup extends MessageLookupByLibrary {
         "upgrade": MessageLookupByLibrary.simpleMessage("Upgrade"),
         "uploadingFilesToAlbum":
             MessageLookupByLibrary.simpleMessage("Uploading files to album..."),
+        "upto50OffUntil4thDec": MessageLookupByLibrary.simpleMessage(
+            "Upto 50% off, until 4th Dec."),
         "usableReferralStorageInfo": MessageLookupByLibrary.simpleMessage(
             "Usable storage is limited by your current plan. Excess claimed storage will automatically become usable when you upgrade your plan."),
         "usePublicLinksForPeopleNotOnEnte":

lib/generated/l10n.dart

@@ -7774,6 +7774,26 @@ class S {
       args: [],
     );
   }
+
+  /// `Black Friday Sale`
+  String get blackFridaySale {
+    return Intl.message(
+      'Black Friday Sale',
+      name: 'blackFridaySale',
+      desc: '',
+      args: [],
+    );
+  }
+
+  /// `Upto 50% off, until 4th Dec.`
+  String get upto50OffUntil4thDec {
+    return Intl.message(
+      'Upto 50% off, until 4th Dec.',
+      name: 'upto50OffUntil4thDec',
+      desc: '',
+      args: [],
+    );
+  }
 }
 
 class AppLocalizationDelegate extends LocalizationsDelegate<S> {

lib/l10n/intl_en.arb

@@ -1108,5 +1108,7 @@
   "hearUsExplanation": "We don't track app installs. It'd help if you told us where you found us!",
   "viewAddOnButton": "View add-ons",
   "addOns": "Add-ons",
-  "addOnPageSubtitle": "Details of add-ons"
+  "addOnPageSubtitle": "Details of add-ons",
+  "blackFridaySale": "Black Friday Sale",
+  "upto50OffUntil4thDec": "Upto 50% off, until 4th Dec."
 }

lib/ui/settings_page.dart

@@ -9,6 +9,7 @@ import 'package:photos/events/opened_settings_event.dart';
 import "package:photos/generated/l10n.dart";
 import 'package:photos/services/feature_flag_service.dart';
 import "package:photos/services/storage_bonus_service.dart";
+import "package:photos/services/user_service.dart";
 import 'package:photos/theme/colors.dart';
 import 'package:photos/theme/ente_theme.dart';
 import "package:photos/ui/components/notification_widget.dart";
@@ -85,23 +86,26 @@ class SettingsPage extends StatelessWidget {
     const sectionSpacing = SizedBox(height: 8);
     contents.add(const SizedBox(height: 8));
     if (hasLoggedIn) {
+      final shouldShowBFBanner = shouldShowBfBanner();
+      final showStorageBonusBanner =
+          StorageBonusService.instance.shouldShowStorageBonus();
       contents.addAll([
         const StorageCardWidget(),
-        StorageBonusService.instance.shouldShowStorageBonus()
+        (shouldShowBFBanner || showStorageBonusBanner)
             ? RepaintBoundary(
                 child: Padding(
                   padding: const EdgeInsets.symmetric(vertical: 8.0),
-                  child: Platform.isAndroid
+                  child: shouldShowBFBanner
                       ? NotificationWidget(
                           isBlackFriday: true,
                           startIcon: Icons.celebration,
                           actionIcon: Icons.arrow_forward_outlined,
-                          text: "Black Friday Sale",
-                          subText: "Upto 50% off!",
+                          text: S.of(context).blackFridaySale,
+                          subText: S.of(context).upto50OffUntil4thDec,
                           type: NotificationType.goldenBanner,
                           onTap: () async {
                             launchUrlString(
-                              "https://ente.io/blackfriday/",
+                              "https://ente.io/blackfriday",
                               mode: LaunchMode.platformDefault,
                             );
                           },
@@ -183,6 +187,23 @@ class SettingsPage extends StatelessWidget {
     );
   }
 
+  bool shouldShowBfBanner() {
+    if (!Platform.isAndroid && !kDebugMode) {
+      return false;
+    }
+    // if date is after 5th of December 2023, 00:00:00, hide banner
+    if (DateTime.now().isAfter(DateTime(2023, 12, 5))) {
+      return false;
+    }
+    // if coupon is already applied, can hide the banner
+    return (UserService.instance
+            .getCachedUserDetails()
+            ?.bonusData
+            ?.getAddOnBonuses()
+            .isEmpty ??
+        true);
+  }
+
   Future<void> _showVerifyIdentityDialog(BuildContext context) async {
     await showDialog(
       context: context,