Implements /chat/ endpoint call with audio playing.

Assets/_Client/Scripts/ApiClient.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections;
+using System.IO;
 using System.Text;
 
 using UnityEngine;
@@ -115,6 +116,41 @@ Response Body: {body}";
             yield return CallEndpointCoroutine(
                 url, "DELETE", null, timeoutInSeconds, callbackOnSuccess);
         }
+
+        internal static IEnumerator ReadAudioResponseCoroutine(
+            UnityWebRequest request,
+            Action<AudioClip> callbackOnSuccess)
+        {
+            byte[] audioBytes = request.downloadHandler.data;
+            if (audioBytes == null || audioBytes.Length == 0)
+            {
+                Debug.LogError("No audio data received.");
+                yield break;
+            }
+
+            // Save temporarily to file for loading as AudioClip
+            string tempPath = Path.Combine(Application.persistentDataPath, "tts_temp.ogg");
+            File.WriteAllBytes(tempPath, audioBytes);
+
+            using (var file = UnityWebRequestMultimedia.GetAudioClip(
+                "file://" + tempPath, AudioType.OGGVORBIS))
+            {
+                yield return file.SendWebRequest();
+
+                if (file.result == UnityWebRequest.Result.Success)
+                {
+                    AudioClip clip = DownloadHandlerAudioClip.GetContent(file);
+                    callbackOnSuccess?.Invoke(clip);
+                }
+                else
+                {
+                    Debug.LogError($"Error loading AudioClip: {file.error}");
+                }
+            }
+
+            // Remove temporary file
+            File.Delete(tempPath);
+        }
     }
 
     internal enum Environment

Assets/_Client/Scripts/ApiClientManager.cs

@@ -5,6 +5,7 @@ using UnityEngine;
 
 namespace PPGIA.X540.Project3.API
 {
+    [RequireComponent(typeof(AudioSource))]
     public class ApiClientManager : MonoBehaviour
     {
         #region -- Inspector Fields -------------------------------------------
@@ -53,6 +54,9 @@ namespace PPGIA.X540.Project3.API
         #endregion ------------------------------------------------------------
 
         #region -- Other Properties & Methods ---------------------------------
+        [SerializeField]
+        private AudioSource _audioSource;
+
         // Property to get the appropriate API base URL
         private string ApiBaseUrl =>
             _environment == Environment.Development ?
@@ -64,6 +68,10 @@ namespace PPGIA.X540.Project3.API
             string.Join("/", parts.Select(p => p.Trim('/')));
         #endregion ------------------------------------------------------------
 
+        void Awake()
+        {
+            _audioSource = GetComponent<AudioSource>();
+        }
 
         #region -- API Calls --------------------------------------------------
         [ContextMenu("Test API Availability")]
@@ -115,20 +123,32 @@ namespace PPGIA.X540.Project3.API
         [ContextMenu("Send Chat Message")]
         public void SendChatMessage()
         {
+            // Ensure there is an active session
             if (_session == null)
             {
                 Debug.LogWarning("No active session. Please initiate a session first.");
                 return;
             }
 
+            // Build the endpoint URL and payload
             var url = EndpointUrl(_chatEndpoint, _session.SessionId);
             var payload = new ChatServicePayload { message = _query };
 
+            // Make the API call. Expect an audio response.
             StartCoroutine(ApiClient.CallEndpointWithPostCoroutine(
                 url, _timeoutInSeconds, payload, (request) =>
             {
-                var body = request.downloadHandler?.text ?? string.Empty;
+                StartCoroutine(ApiClient.ReadAudioResponseCoroutine(
-                Debug.Log($"Chat response: {body}");
+                    request, (audioClip) =>
+                {
+                    if (audioClip == null)
+                    {
+                        Debug.LogError("AudioClip is null after download.");
+                        return;
+                    }
+
+                    _audioSource?.PlayOneShot(audioClip);
+                }));
             }));
         }
         #endregion -- API Calls ------------------------------------------------