From 2c9357741f3fd26cb7a817f9e9e2dba37ee244f1 Mon Sep 17 00:00:00 2001
From: Hank Grabowski <hankgrabowski@gmail.com>
Date: Sat, 19 Nov 2022 14:16:46 -0500
Subject: [PATCH] Add notification clearing capability (server side not
 working)

---
 lib/friendica_client.dart               |  8 ++++
 lib/globals.dart                        | 47 +++++++++++++++++++++
 lib/screens/notifications_screen.dart   | 54 +++++++++++++++++++++----
 lib/services/notifications_manager.dart | 18 +++++++++
 4 files changed, 120 insertions(+), 7 deletions(-)

diff --git a/lib/friendica_client.dart b/lib/friendica_client.dart
index 5884c0c..2f4dfb5 100644
--- a/lib/friendica_client.dart
+++ b/lib/friendica_client.dart
@@ -46,6 +46,14 @@ class FriendicaClient {
     });
   }
 
+  FutureResult<bool, ExecError> clearNotifications() async {
+    final url = 'https://$serverName/api/v1/notifications/clear';
+    final request = Uri.parse(url);
+    _logger.finest(() => 'Clearing unread notifications');
+    final response = await _postUrl(request, {});
+    return response.mapValue((value) => true);
+  }
+
   FutureResult<List<TimelineEntry>, ExecError> getUserTimeline(
       {String userId = '', int page = 1, int count = 10}) async {
     _logger.finest(() => 'Getting user timeline for $userId');
diff --git a/lib/globals.dart b/lib/globals.dart
index 8d54766..ffb6041 100644
--- a/lib/globals.dart
+++ b/lib/globals.dart
@@ -1,6 +1,53 @@
+import 'package:flutter/material.dart';
 import 'package:get_it/get_it.dart';
 import 'package:uuid/uuid.dart';
 
 final getIt = GetIt.instance;
 
 String randomId() => const Uuid().v4().toString();
+
+Future<bool?> showConfirmDialog(BuildContext context, String caption) {
+  return showDialog<bool>(
+    context: context,
+    barrierDismissible: false,
+    builder: (BuildContext context) {
+      return AlertDialog(
+        title: Text(caption),
+        actions: <Widget>[
+          ElevatedButton(
+            child: const Text('OK'),
+            onPressed: () {
+              Navigator.pop(context, true); // showDialog() returns true
+            },
+          ),
+        ],
+      );
+    },
+  );
+}
+
+Future<bool?> showYesNoDialog(BuildContext context, String caption) {
+  return showDialog<bool>(
+    context: context,
+    barrierDismissible: false,
+    builder: (BuildContext context) {
+      return AlertDialog(
+        title: Text(caption),
+        actions: <Widget>[
+          ElevatedButton(
+            child: const Text('Yes'),
+            onPressed: () {
+              Navigator.pop(context, true); // showDialog() returns true
+            },
+          ),
+          ElevatedButton(
+            child: const Text('No'),
+            onPressed: () {
+              Navigator.pop(context, false); // showDialog() returns false
+            },
+          ),
+        ],
+      );
+    },
+  );
+}
diff --git a/lib/screens/notifications_screen.dart b/lib/screens/notifications_screen.dart
index ed0c706..f85d71d 100644
--- a/lib/screens/notifications_screen.dart
+++ b/lib/screens/notifications_screen.dart
@@ -3,7 +3,9 @@ import 'package:provider/provider.dart';
 
 import '../controls/app_bottom_nav_bar.dart';
 import '../controls/notifications_control.dart';
+import '../globals.dart';
 import '../services/notifications_manager.dart';
+import '../utils/snackbar_builder.dart';
 
 class NotificationsScreen extends StatelessWidget {
   const NotificationsScreen({super.key});
@@ -12,24 +14,62 @@ class NotificationsScreen extends StatelessWidget {
   Widget build(BuildContext context) {
     final manager = context.watch<NotificationsManager>();
     final notifications = manager.notifications;
+    late final String title;
+    late final Widget body;
     if (notifications.isEmpty) {
       manager.updateNotifications();
-    }
-    return Scaffold(
-      appBar: AppBar(
-        title: Text('Notifications'),
-      ),
-      body: ListView.separated(
+      title = 'Notifications';
+      body = Center(
+          child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Text('No notifications'),
+        ],
+      ));
+    } else {
+      final unreadCount = notifications.where((e) => !e.seen).length;
+      title = 'Notifications ($unreadCount)';
+      body = ListView.separated(
           itemBuilder: (context, index) {
             return NotificationControl(notification: notifications[index]);
           },
           separatorBuilder: (context, index) {
             return Divider();
           },
-          itemCount: notifications.length),
+          itemCount: notifications.length);
+    }
+
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(title),
+        actions: [
+          IconButton(
+            onPressed: () async => _clearAllNotifications(context, manager),
+            icon: Icon(Icons.clear_all),
+          ),
+        ],
+      ),
+      body: RefreshIndicator(
+        onRefresh: () async {
+          await manager.updateNotifications();
+        },
+        child: body,
+      ),
       bottomNavigationBar: AppBottomNavBar(
         currentButton: NavBarButtons.notifications,
       ),
     );
   }
+
+  Future<void> _clearAllNotifications(
+      BuildContext context, NotificationsManager manager) async {
+    final confirmed =
+        await showYesNoDialog(context, 'Clear all notifications?');
+    if (confirmed == true) {
+      final message = (await manager.markAllAsRead()).fold(
+          onSuccess: (_) => 'Marked all notifications as read',
+          onError: (error) => 'Error marking notifications: $error');
+      buildSnackbar(context, message);
+    }
+  }
 }
diff --git a/lib/services/notifications_manager.dart b/lib/services/notifications_manager.dart
index 1cce713..1c5bc0d 100644
--- a/lib/services/notifications_manager.dart
+++ b/lib/services/notifications_manager.dart
@@ -42,6 +42,7 @@ class NotificationsManager extends ChangeNotifier {
       return result.errorCast();
     }
 
+    _notifications.clear();
     for (final n in result.value) {
       _notifications[n.id] = n;
     }
@@ -71,4 +72,21 @@ class NotificationsManager extends ChangeNotifier {
     notifyListeners();
     return Result.ok(notifications.first);
   }
+
+  FutureResult<List<UserNotification>, ExecError> markAllAsRead() async {
+    final auth = getIt<AuthService>();
+    final clientResult = auth.currentClient;
+    if (clientResult.isFailure) {
+      _logger.severe('Error getting Friendica client: ${clientResult.error}');
+      return clientResult.errorCast();
+    }
+
+    final client = clientResult.value;
+    final result = await client.clearNotifications();
+    if (result.isFailure) {
+      return result.errorCast();
+    }
+
+    return updateNotifications();
+  }
 }