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ios/Classes/NearbyMessageConverter.swift

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+//
+//  NearbyMessageConverter.swift
+//  nearby_service
+//
+//  Created by Kseniia Nikitina on 29/1/24.
+//
+
+import Foundation
+import MultipeerConnectivity
+
+class NearbyMessageConverter {
+    static func convert(userInfo: [AnyHashable : Any]?) -> String? {
+        if let data = getMessageData(userInfo: userInfo),
+           let peerID = getMessagePeerID(userInfo: userInfo) {
+            return createMessage(data: data, peerID: peerID)
+        }
+        return nil
+    }
+    
+    static private func getMessageData(userInfo: [AnyHashable : Any]?) ->  [String: String]? {
+        do {
+            if let data = userInfo?["data"] as? Data,
+               let dictionary = try JSONSerialization.jsonObject(with: data, options: []) as? [String: String] {
+                return dictionary
+            }
+        } catch let error {
+            Logger.error(message: error.localizedDescription)
+        }
+        return nil
+    }
+    
+    static private func getMessagePeerID(userInfo: [AnyHashable:Any]?) -> MCPeerID? {
+        return userInfo?["from"] as? MCPeerID
+        
+    }
+    
+    static private func createMessage(data: [String: String], peerID: MCPeerID)-> String? {
+        do {
+            if let message = data["message"],
+               let name = data["name"] {
+                
+                var result: String?
+                let jsonObject = [
+                    "message": message,
+                    "sender": ["id": peerID.displayName, "displayName": name],
+                ] as [String : Any]
+                
+                let jsonData = try JSONSerialization.data(withJSONObject: jsonObject)
+                if let jsonString = String(data: jsonData, encoding: .utf8) {
+                    result = jsonString
+                }
+                return result
+            }
+        } catch let error {
+            Logger.error(message: error.localizedDescription)
+        }
+        return nil
+    }
+}