Parse markdown and html from push notifications (#1688)

* Extract notification content building outside of the NotificationItemProxy. First step in a bigger refactoring of the NSE * Import the attributed string buider into the NSE, sort `sources` imports * Extract message event string building into the RoomMessageEventStringBuilder and reuse it building content for push notifications * Cleanup * Add changelog
2026-11-02 21:33:26 +00:00 · 2023-09-13 12:30:41 +03:00
parent add148b77d
commit 97aa930852
15 changed files with 416 additions and 393 deletions
@@ -0,0 +1,78 @@
+//
+// 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.
+//
+
+import Foundation
+import MatrixRustSDK
+
+struct RoomMessageEventStringBuilder {
+    let attributedStringBuilder: AttributedStringBuilderProtocol
+    
+    func buildAttributedString(for messageType: MessageType, senderDisplayName: String, prefixWithSenderName: Bool) -> AttributedString {
+        let message: String
+        switch messageType {
+        // Message types that don't need a prefix.
+        case .emote(content: let content):
+            if let attributedMessage = attributedMessageFrom(formattedBody: content.formatted) {
+                return AttributedString(L10n.commonEmote(senderDisplayName, String(attributedMessage.characters)))
+            } else {
+                return AttributedString(L10n.commonEmote(senderDisplayName, content.body))
+            }
+        // Message types that should be prefixed with the sender's name.
+        case .audio:
+            message = L10n.commonAudio
+        case .image:
+            message = L10n.commonImage
+        case .video:
+            message = L10n.commonVideo
+        case .file:
+            message = L10n.commonFile
+        case .location:
+            message = L10n.commonSharedLocation
+        case .notice(content: let content):
+            if let attributedMessage = attributedMessageFrom(formattedBody: content.formatted) {
+                message = String(attributedMessage.characters)
+            } else {
+                message = content.body
+            }
+        case .text(content: let content):
+            if let attributedMessage = attributedMessageFrom(formattedBody: content.formatted) {
+                message = String(attributedMessage.characters)
+            } else {
+                message = content.body
+            }
+        }
+        
+        if prefixWithSenderName {
+            return prefix(message, with: senderDisplayName)
+        } else {
+            return AttributedString(message)
+        }
+    }
+    
+    private func prefix(_ eventSummary: String, with senderDisplayName: String) -> AttributedString {
+        let attributedEventSummary = AttributedString(eventSummary.trimmingCharacters(in: .whitespacesAndNewlines))
+        
+        var attributedSenderDisplayName = AttributedString(senderDisplayName)
+        attributedSenderDisplayName.bold()
+        
+        // Don't include the message body in the markdown otherwise it makes tappable links.
+        return attributedSenderDisplayName + ": " + attributedEventSummary
+    }
+    
+    private func attributedMessageFrom(formattedBody: FormattedBody?) -> AttributedString? {
+        formattedBody.flatMap { attributedStringBuilder.fromHTML($0.body) }
+    }
+}