🍺 Add experimental iOS notification service extensions

ios/SolianNotifyExt/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSUserActivityTypes</key>
+	<array/>
+	<key>INSendMessageIntent</key>
+	<string></string>
+	<key>INStartCallIntent</key>
+	<string></string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.usernotifications.service</string>
+		<key>NSExtensionPrincipalClass</key>
+		<string>$(PRODUCT_MODULE_NAME).NotificationService</string>
+	</dict>
+</dict>
+</plist>

ios/SolianNotifyExt/NotificationService.swift

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+//
+//  NotificationService.swift
+//  SolianNotifyExt
+//
+//  Created by LittleSheep on 2024/7/19.
+//
+
+import UserNotifications
+import Intents
+
+class NotificationService: UNNotificationServiceExtension {
+    
+    var contentHandler: ((UNNotificationContent) -> Void)?
+    var bestAttemptContent: UNMutableNotificationContent?
+    
+    func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) async {
+        self.contentHandler = contentHandler
+        bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
+        
+        if let bestAttemptContent = bestAttemptContent {
+            switch bestAttemptContent.categoryIdentifier {
+            case "messaging.message", "messaging.callStart":
+                let metadata = bestAttemptContent.userInfo["metadata"] as! [AnyHashable : Any]
+                let handle = INPersonHandle(value: String(metadata["user_id"] as! Int), type: .unknown)
+                let avatar = INImage(
+                    url: URL(string: bestAttemptContent.userInfo["avatar"] as! String)!
+                )!
+                let sender = INPerson(personHandle: handle,
+                                      nameComponents: nil,
+                                      displayName: metadata["user_nick"] as? String,
+                                      image: avatar,
+                                      contactIdentifier: nil,
+                                      customIdentifier: nil)
+                let intent = INSendMessageIntent(recipients: nil,
+                                                 outgoingMessageType: .outgoingMessageText,
+                                                 content: bestAttemptContent.body,
+                                                 speakableGroupName: nil,
+                                                 conversationIdentifier: String(metadata["channel_id"] as! Int),
+                                                 serviceName: nil,
+                                                 sender: sender,
+                                                 attachments: nil)
+                
+                let interaction = INInteraction(intent: intent, response: nil)
+                interaction.direction = .incoming
+                
+                do {
+                    try await interaction.donate()
+                    
+                    let updatedContent = try request.content.updating(from: intent)
+                    contentHandler(updatedContent)
+                } catch {
+                    return
+                }
+                
+                break
+            default:
+                contentHandler(bestAttemptContent)
+                break
+            }
+        }
+    }
+    
+    override func serviceExtensionTimeWillExpire() {
+        // Called just before the extension will be terminated by the system.
+        // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
+        if let contentHandler = contentHandler, let bestAttemptContent =  bestAttemptContent {
+            contentHandler(bestAttemptContent)
+        }
+    }
+    
+}