Custom copy for notifications that contain mentions (#2050)

ElementX/Sources/Other/Extensions/UNNotificationContent.swift

@@ -86,8 +86,12 @@ extension UNMutableNotificationContent {
         switch await mediaProvider.loadFileFromSource(mediaSource) {
         case .success(let file):
             do {
+                guard let url = file.url else {
+                    MXLog.error("Couldn't add media attachment: URL is nil")
+                    return self
+                }
                 let identifier = ProcessInfo.processInfo.globallyUniqueString
-                let newURL = try FileManager.default.copyFileToTemporaryDirectory(file: file.url, with: "\(identifier).\(file.url.pathExtension)")
+                let newURL = try FileManager.default.copyFileToTemporaryDirectory(file: url, with: "\(identifier).\(url.pathExtension)")
                 let attachment = try UNNotificationAttachment(identifier: identifier,
                                                               url: newURL,
                                                               options: nil)

ElementX/Sources/Other/Pills/PlainMentionBuilder.swift

@@ -20,5 +20,7 @@ import Foundation
 struct PlainMentionBuilder: MentionBuilderProtocol {
     func handleAllUsersMention(for attributedString: NSMutableAttributedString, in range: NSRange) { }
     
-    func handleUserMention(for attributedString: NSMutableAttributedString, in range: NSRange, url: URL, userID: String) { }
+    func handleUserMention(for attributedString: NSMutableAttributedString, in range: NSRange, url: URL, userID: String) {
+        attributedString.insert(NSAttributedString(string: "@"), at: range.location)
+    }
 }

ElementX/Sources/Other/SharedUserDefaultsKeys.swift

@@ -1,19 +0,0 @@
-//
-// Copyright 2023 New Vector Ltd
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-enum SharedUserDefaultsKeys: String {
-    case logLevel
-}