From ac13ac60259d9e33e43c9bf5a07751de4e7a296e Mon Sep 17 00:00:00 2001
From: Kevin G Christiano <kevin.christiano@verizonwireless.com>
Date: Mon, 19 Apr 2021 14:03:51 -0400
Subject: [PATCH] implementing a delegate pattern.

---
 MVMCoreUI/Behaviors/PlayAudioBehavior.swift | 59 ++++++++++++---------
 1 file changed, 35 insertions(+), 24 deletions(-)

diff --git a/MVMCoreUI/Behaviors/PlayAudioBehavior.swift b/MVMCoreUI/Behaviors/PlayAudioBehavior.swift
index 76d7e64b..572fac0b 100644
--- a/MVMCoreUI/Behaviors/PlayAudioBehavior.swift
+++ b/MVMCoreUI/Behaviors/PlayAudioBehavior.swift
@@ -13,6 +13,8 @@ public protocol PagePlayAudioBehaviorConsumerProtocol {
     func pause()
     func stop()
     var isPlaying: Bool { get }
+    var messageID: String? { get }
+    var audioFileURL: URL? { get set }
 }
 
 public class PagePlayAudioBehaviorModel: PageBehaviorModelProtocol {
@@ -27,7 +29,7 @@ public class PagePlayAudioBehavior: PageCustomActionHandlerBehavior {
     // MARK: - Active Model
     //--------------------------------------------------
     
-     public static var activeAudioPlayer: PagePlayAudioBehaviorConsumerProtocol?
+     public static var activeAudioPlayerDelegate: PagePlayAudioBehaviorConsumerProtocol?
     
     //--------------------------------------------------
     // MARK: - Delegate
@@ -50,31 +52,27 @@ public class PagePlayAudioBehavior: PageCustomActionHandlerBehavior {
     // Either play or pause
     public func handleAction(type actionType: String?, information: [AnyHashable: Any]?, additionalData: [AnyHashable: Any]?) -> Bool {
         
-        // TODO: Has to grab the specific model that is active (expanded). Identify model holder of this action.
-        
-        // TODO: Update the model. play -> pause OR pause -> play
-        
-        // TODO: Download binary
-        
-        // TODO: Store audio file in cache using some key (messageID???) to store it.
-        
-        // TODO: Actually pause/play
+        // TODO: Impose Activity Indicator.
         
+        // Update the model. play -> pause OR pause -> play
+        if Self.activeAudioPlayerDelegate?.isPlaying ?? false {
+            Self.activeAudioPlayerDelegate?.pause()
+            
+        } else {
+          
+            // Download binary
+            downloadAudioFile { url in
+                
+                // TODO: Actually pause/play
+                Self.activeAudioPlayerDelegate?.audioFileURL = url
+                Self.activeAudioPlayerDelegate?.togglePlayPause()
+                
+                // TODO: Remove Activity Indicator.
+            }
+        }
+
         // TODO: Tell Template to update this cell (needs to be built). Currently it updates all cells.
-        
-//        let templateModel = (delegate?.moleculeDelegate as? PageProtocol)?.pageModel as? TemplateModelProtocol
-        Self.activeAudioPlayer?.play()
-//        let consumers: [PagePlayAudioBehaviorConsumerProtocol] = templateModel!.allMoleculesOfType()
-//        for consumer in consumers {
-//            consumer.playPause()
-//        }
-        
-        // Tell template to update.
-//        MVMCoreDispatchUtility.performBlock(onMainThread: { [weak self] in
-            // TODO: move to protocol function instead
-//            (self?.delegate?.moleculeDelegate as? ViewController)?.handleNewData()
-//        })
-        
+
         return true
     }
     
@@ -85,6 +83,19 @@ public class PagePlayAudioBehavior: PageCustomActionHandlerBehavior {
     //--------------------------------------------------
     // MARK: - Download Audio File
     //--------------------------------------------------
+    
+    func downloadAudioFile(_ completion: @escaping (URL) -> ()) {
+        
+        // TODO: Check cache. Return if available
+//        let audioData = MVMCoreCache.shared()?.getCachedData(withName: PagePlayAudioBehavior.activeAudioPlayerDelegate!.messageID!)
+        
+        guard let soundFileURL = Bundle.main.url(forResource: "sampleAudio", withExtension: "wav") else { return  }
+        
+        // TODO: Store audio file in cache using some key (messageID???) to store it.
+//        MVMCoreCache.shared()?.addData(toCache: soundFileURL.dataRepresentation, withName: PagePlayAudioBehavior.activeAudioPlayerDelegate!.messageID!)
+        completion(soundFileURL)
+//        return soundFileURL
+    }
 /*
     // https://oneconfluence.verizon.com/pages/viewpage.action?spaceKey=EIM&title=FDV+API