partial development in add audio message support

Example/Sources/View Controllers/BasicExampleViewController.swift

@@ -26,6 +26,7 @@ import UIKit
 import MapKit
 import MessageKit
 import MessageInputBar
+import AVFoundation
 
 final class BasicExampleViewController: ChatViewController {
   
@@ -96,7 +97,38 @@ extension BasicExampleViewController: MessagesDisplayDelegate {
         
         return LocationMessageSnapshotOptions(showsBuildings: true, showsPointsOfInterest: true, span: MKCoordinateSpan(latitudeDelta: 10, longitudeDelta: 10))
     }
-    
+
+    // MARK: - Audio Messages
+
+    func audioTintColor(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> UIColor {
+        return self.isFromCurrentSender(message: message) ? .white : UIColor(red: 15/255, green: 135/255, blue: 255/255, alpha: 1.0)
+    }
+
+//    func configureAudioCell(_ audioCell: AudioMessageCell, for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) {
+//        // if audio player is in pause or currently playing configure the cell accordingly
+//        guard let player = audioPlayer else {
+//            return
+//        }
+//        switch message.kind {
+//        case .audio(let item):
+//            if item.url.absoluteString == player.url?.absoluteString { // make sure you configure the right cell
+//                let totalDuration = self.audioPlayer?.duration ?? 0.0
+//                let currentTime = self.audioPlayer?.currentTime ?? 0.0
+//                let percent = (totalDuration != 0) ? (Float(currentTime/totalDuration)) : 0.0
+//                audioCell.updateProgress(percent: percent, duration: currentTime)
+//                // restart audio timer since the cell was reconfigured
+//                if self.audioTimer?.isValid == true {
+//                    self.audioTimer?.invalidate()
+//                    print("Restart timer with new cell: \(audioCell)")
+//                    self.audioTimer = Timer.scheduledTimer(timeInterval: 0.1, target: self, selector: #selector(ChatViewController.didFireAudioTimer(_:)), userInfo: audioCell, repeats: true)
+//                } else {
+//                    audioCell.pasue()  // if the audio timer is invalidate it means the cell is in pause
+//                }
+//            }
+//        default: break
+//        }
+//    }
+
 }
 
 // MARK: - MessagesLayoutDelegate