Updates app main scene.

Adds STT functionality with audio upload
Adds speech-to-text (STT) functionality by allowing users to upload audio clips, start transcription jobs, and download transcriptions. Introduces new API endpoints for STT upload, start, and download. Also, converts AudioClip to WAV byte array.
2025-11-26 19:31:51 -03:00 · 2025-11-26 19:31:12 -03:00 · 2025-11-26 19:30:37 -03:00 · 2025-11-26 07:21:44 -03:00
12 changed files with 721 additions and 203 deletions
--- a/Assets/_Client/GUI/Main.uss
+++ b/Assets/_Client/GUI/Main.uss
@ -2,6 +2,5 @@
 }

 .expandable {
-    flex-grow: 1;
    white-space: normal;
 }
--- a/Assets/_Client/GUI/Main.uxml
+++ b/Assets/_Client/GUI/Main.uxml
@ -1,11 +1,10 @@
 <ui:UXML xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ui="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements" noNamespaceSchemaLocation="../../../UIElementsSchema/UIElements.xsd" editor-extension-mode="False">
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    <ui:VisualElement name="VE_Panel" style="flex-grow: 1;">
-        <ui:Button text="Iniciar sessão" name="B_Session" />
-        <ui:Label text="Chat:" />
-        <ui:TextField placeholder-text="Digite sua mensagem" name="TF_ChatInput" class="expandable" />
-        <ui:Button text="Enviar mensagem" name="B_SendChat" />
+        <ui:Button text="Falar..." name="B_Talk" />
        <ui:ProgressBar value="0" title="Processando... Por favor, espere..." name="PB_Progress" enabled="true" />
-        <ui:TextField placeholder-text="response" multiline="true" readonly="true" name="TF_ChatOutput" class="expandable" />
+        <ui:ScrollView>
+            <ui:TextField placeholder-text="response" multiline="true" readonly="true" name="TF_Dialogue" class="expandable" />
+        </ui:ScrollView>
    </ui:VisualElement>
 </ui:UXML>
--- a/Assets/_Client/Prefabs/--
+++ b/Assets/_Client/Prefabs/--
@ -1,6 +1,6 @@
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+  m_Resource: {fileID: 0}
  m_PlayOnAwake: 0
  m_Volume: 1
  m_Pitch: 1
-  Loop: 1
+  Loop: 0
  Mute: 0
  Spatialize: 0
  SpatializePostEffects: 0
@ -215,6 +162,88 @@ AudioSource:
    m_PreInfinity: 2
    m_PostInfinity: 2
    m_RotationOrder: 4
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@ -235,14 +264,16 @@ MonoBehaviour:
  _chatEndpoint: /chat/
  _llmAgentEndpoint: /agent/ask
  _ttsEndpoint: /tts/synthesize
-  _sttEndpoint: /stt/upload
+  _sttUploadEndpoint: /transcript/get-upload-url
+  _sttStartEndpoint: /transcript/start
+  _sttDownloadEndpoint: /transcript/download
  _clientId: unity-client
  _timeoutInSeconds: 10
  _query: "Ah, guru! Como \xE9 bom poder contar com suas orienta\xE7\xF5es!"
  _session:
    session_id: 9686ca2a-302a-4ac8-8709-a98067d37530
    created_at: 1763908462
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+  _audioSource: {fileID: 7584847903250953468}
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+  - component: {fileID: 1938294408165125026}
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+  m_Name: Audio Input
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@ -299,7 +316,7 @@ AudioSource:
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  m_audioClip: {fileID: 0}
  m_Resource: {fileID: 0}
  m_PlayOnAwake: 1
@ -387,3 +404,91 @@ AudioSource:
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+  _sampleRateInHz: 16000
+  _maxRecordingSeconds: 300
+  _fileName: RecordedAudio.wav
+  _playbackVolume: 1
+  _enableMonitoring: 0
+  _monitorLatencyMs: 80
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+  _selectedMicrophoneIndex: 0
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--- a/Assets/_Client/Scenes/Main.unity
+++ b/Assets/_Client/Scenes/Main.unity
@ -440,21 +440,9 @@ PrefabInstance:
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+      value: -- APP MANAGER --
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--- a/Assets/_Client/Scripts/API/ApiClient.cs
+++ b/Assets/_Client/Scripts/API/ApiClient.cs
@ -1,6 +1,6 @@
 using System;
-using System.Collections;
 using System.IO;
+using System.Collections;
 using System.Text;

 using UnityEngine;
@ -56,12 +56,6 @@ namespace PPGIA.X540.Project3.API

                request.downloadHandler = new DownloadHandlerBuffer();

-                // Debug.Log($"Sending {method} request to {url}");
-                // Debug.Log(
-                //     payload != null ?
-                //     $"Payload: {JsonUtility.ToJson(payload)}" :
-                //     "No payload.");
-
                var op = request.SendWebRequest();
                yield return WaitForTimeout(op, timeoutInSeconds, () =>
                {
@ -117,6 +111,170 @@ Response Body: {body}";
                url, "DELETE", null, timeoutInSeconds, callbackOnSuccess);
        }

+        internal static IEnumerator UploadAudioDataCoroutine(
+            string url,
+            string filePath,
+            float timeoutInSeconds,
+            Action<UnityWebRequest> callbackOnSuccess)
+        {
+            // PUT the audio data as binary
+            byte[] audioData = File.ReadAllBytes(filePath);
+            string fileName = Path.GetFileName(filePath);
+
+            using (UnityWebRequest request = UnityWebRequest.Put(url, audioData))
+            {
+                request.SetRequestHeader("Content-Type", "audio/wav");
+                
+                var op = request.SendWebRequest();
+                yield return WaitForTimeout(op, timeoutInSeconds, () =>
+                {
+                    Debug.LogError("Request timed out.");
+                });
+
+                if (request.result == UnityWebRequest.Result.Success)
+                {
+                    callbackOnSuccess?.Invoke(request);
+                }
+                else
+                {
+                    var body = request.downloadHandler?.text ?? string.Empty;
+                    Debug.LogError($"Failed to upload audio data: {request.error} (HTTP {request.responseCode})\nBody: {body}");
+                }
+            }
+        }
+
+        internal static IEnumerator UploadAudioCoroutine(
+            string url,
+            AudioClip audioClip,
+            float timeoutInSeconds,
+            Action<UnityWebRequest> callbackOnSuccess)
+        {
+            // Convert AudioClip to WAV (PCM 16-bit little endian) without external utility.
+            byte[] audioData = AudioClipToWavBytes(audioClip);
+            string fileName = $"{audioClip.name}.wav";
+            string fieldName = "file";
+
+            yield return UploadFileCoroutine(
+                url, audioData, fileName, fieldName, timeoutInSeconds, callbackOnSuccess);
+        }
+
+        // Writes a WAV file header + PCM 16-bit data for the provided AudioClip.
+        // Supports mono or multi-channel clips. Assumes clip.samples * channels fits in int32.
+        private static byte[] AudioClipToWavBytes(AudioClip clip)
+        {
+            if (clip == null)
+            {
+                Debug.LogError("AudioClipToWavBytes: clip is null");
+                return Array.Empty<byte>();
+            }
+
+            int channels = clip.channels;
+            int sampleCount = clip.samples * channels; // total samples across channels
+            int sampleRate = clip.frequency;
+
+            // Get float data
+            float[] floatData = new float[sampleCount];
+            clip.GetData(floatData, 0);
+
+            // Convert to 16-bit PCM
+            // Each sample -> 2 bytes
+            byte[] pcmData = new byte[sampleCount * 2];
+            int pcmIndex = 0;
+            for (int i = 0; i < sampleCount; i++)
+            {
+                // Clamp just in case
+                float f = Mathf.Clamp(floatData[i], -1f, 1f);
+                short s = (short)Mathf.RoundToInt(f * 32767f);
+                pcmData[pcmIndex++] = (byte)(s & 0xFF); // little endian
+                pcmData[pcmIndex++] = (byte)((s >> 8) & 0xFF);
+            }
+
+            // WAV header size is 44 bytes
+            int headerSize = 44;
+            int fileSize = headerSize + pcmData.Length;
+            byte[] wav = new byte[fileSize];
+
+            // Helper local to write int/short little endian
+            void WriteInt32LE(int offset, int value)
+            {
+                wav[offset] = (byte)(value & 0xFF);
+                wav[offset + 1] = (byte)((value >> 8) & 0xFF);
+                wav[offset + 2] = (byte)((value >> 16) & 0xFF);
+                wav[offset + 3] = (byte)((value >> 24) & 0xFF);
+            }
+            void WriteInt16LE(int offset, short value)
+            {
+                wav[offset] = (byte)(value & 0xFF);
+                wav[offset + 1] = (byte)((value >> 8) & 0xFF);
+            }
+
+            // ChunkID "RIFF"
+            wav[0] = (byte)'R'; wav[1] = (byte)'I'; wav[2] = (byte)'F'; wav[3] = (byte)'F';
+            // ChunkSize = 36 + Subchunk2Size
+            int subchunk2Size = pcmData.Length; // NumSamples * NumChannels * BitsPerSample/8
+            WriteInt32LE(4, 36 + subchunk2Size);
+            // Format "WAVE"
+            wav[8] = (byte)'W'; wav[9] = (byte)'A'; wav[10] = (byte)'V'; wav[11] = (byte)'E';
+            // Subchunk1ID "fmt "
+            wav[12] = (byte)'f'; wav[13] = (byte)'m'; wav[14] = (byte)'t'; wav[15] = (byte)' ';
+            // Subchunk1Size (16 for PCM)
+            WriteInt32LE(16, 16);
+            // AudioFormat (1 = PCM)
+            WriteInt16LE(20, 1);
+            // NumChannels
+            WriteInt16LE(22, (short)channels);
+            // SampleRate
+            WriteInt32LE(24, sampleRate);
+            // ByteRate = SampleRate * NumChannels * BitsPerSample/8
+            int byteRate = sampleRate * channels * 2;
+            WriteInt32LE(28, byteRate);
+            // BlockAlign = NumChannels * BitsPerSample/8
+            WriteInt16LE(32, (short)(channels * 2));
+            // BitsPerSample
+            WriteInt16LE(34, 16);
+            // Subchunk2ID "data"
+            wav[36] = (byte)'d'; wav[37] = (byte)'a'; wav[38] = (byte)'t'; wav[39] = (byte)'a';
+            // Subchunk2Size
+            WriteInt32LE(40, subchunk2Size);
+
+            // Copy PCM data after header
+            Buffer.BlockCopy(pcmData, 0, wav, headerSize, pcmData.Length);
+
+            return wav;
+        }
+
+        internal static IEnumerator UploadFileCoroutine(
+            string url,
+            byte[] fileData,
+            string fileName,
+            string fieldName,
+            float timeoutInSeconds,
+            Action<UnityWebRequest> callbackOnSuccess)
+        {
+            WWWForm form = new WWWForm();
+            form.AddBinaryData(fieldName, fileData, fileName);
+
+            using (UnityWebRequest request =
+                    UnityWebRequest.Post(url, form))
+            {
+                var op = request.SendWebRequest();
+                yield return WaitForTimeout(op, timeoutInSeconds, () =>
+                {
+                    Debug.LogError("Request timed out.");
+                });
+
+                if (request.result == UnityWebRequest.Result.Success)
+                {
+                    callbackOnSuccess?.Invoke(request);
+                }
+                else
+                {
+                    Debug.LogError(
+                        $"Error uploading file: {request.error}");
+                }
+            }
+        }
+
        internal static IEnumerator DownloadAudioCoroutine(
            string url,
            float timeoutInSeconds,
--- a/Assets/_Client/Scripts/API/ApiClientManager.cs
+++ b/Assets/_Client/Scripts/API/ApiClientManager.cs
@ -1,4 +1,5 @@
 using System;
+using System.IO;
 using System.Collections;
 using System.Linq;

@ -7,7 +8,6 @@ using UnityEngine;

 namespace PPGIA.X540.Project3.API
 {
-    [RequireComponent(typeof(AudioSource))]
    public class ApiClientManager : MonoBehaviour
    {
        #region -- Inspector Fields -------------------------------------------
@ -29,7 +29,7 @@ namespace PPGIA.X540.Project3.API
        private string _sessionCloseEndpoint = "/session/close";

        [SerializeField]
-        private string _chatEndpoint = "/chat/";
+        private string _chatEndpoint = "/chat";

        [SerializeField]
        private string _llmAgentEndpoint = "/agent/ask";
@ -38,7 +38,13 @@ namespace PPGIA.X540.Project3.API
        private string _ttsEndpoint = "/tts/synthesize";

        [SerializeField]
-        private string _sttEndpoint = "/stt/upload";
+        private string _sttUploadEndpoint = "/transcript/get-upload-url";
+
+        [SerializeField]
+        private string _sttStartEndpoint = "/transcript/start";
+
+        [SerializeField]
+        private string _sttDownloadEndpoint = "/transcript/download";

        [Header("API Settings & Workload")]
        [SerializeField]
@ -73,7 +79,10 @@ namespace PPGIA.X540.Project3.API

        void Awake()
        {
-            _audioSource = GetComponent<AudioSource>();
+            if (_audioSource == null)
+                _audioSource = GetComponent<AudioSource>();
+            if (_audioSource == null)
+                Debug.LogWarning("AudioSource component is missing.");
        }

        #region -- API Calls --------------------------------------------------
@ -131,6 +140,135 @@ namespace PPGIA.X540.Project3.API
            }));
        }

+        public void UploadAudioClip(
+            string localFilePath, Action<string> uploadCompletedCallback = null)
+        {
+            if (_session == null)
+            {
+                Debug.LogWarning("No active session. Please initiate a session first.");
+                return;
+            }
+
+            StopAllCoroutines();
+
+            var url = EndpointUrl(_sttUploadEndpoint, _session.SessionId);
+            var payload = new 
+            {
+                filename = Path.GetFileName(localFilePath),
+                content_type = "audio/wav"
+            };
+
+            StartCoroutine(ApiClient.CallEndpointWithPostCoroutine(
+                url, _timeoutInSeconds, payload, (request) =>
+            {
+                var body = request.downloadHandler?.text ?? string.Empty;
+                var uploadUrl = JsonUtility.FromJson<STTUploadResponse>(body)?.UploadUrl;
+                var s3Key = JsonUtility.FromJson<STTUploadResponse>(body)?.S3Key;
+                if (uploadUrl == null)
+                {
+                    Debug.LogWarning("Failed to get upload URL.");
+                    return;
+                }
+
+                StartCoroutine(ApiClient.UploadAudioDataCoroutine(
+                    uploadUrl, localFilePath, _timeoutInSeconds, (uploadRequest) =>
+                {
+                    Debug.Log($"Audio upload complete: {uploadRequest.responseCode}");
+                    uploadCompletedCallback?.Invoke(s3Key);
+                }));
+            }));
+        }
+
+
+        [ContextMenu("STT/Upload Audio Clip")]
+        public void StartTranscript(string s3Key,
+            Action<string> transcriptStartedCallback = null)
+        {
+            // Ensure there is an active session
+            if (_session == null)
+            {
+                Debug.LogWarning("No active session. Please initiate a session first.");
+                return;
+            }
+            if (string.IsNullOrEmpty(s3Key))
+            {
+                Debug.LogWarning("No file path provided for upload.");
+                return;
+            }
+
+            StopAllCoroutines();
+
+            // Build the endpoint URL
+            var url = EndpointUrl(_sttStartEndpoint);
+            var payload = new STTUploadResponse {
+                s3_key = s3Key
+            };
+
+            // Make the API call to upload the audio clip
+            StartCoroutine(ApiClient.CallEndpointWithPostCoroutine(
+                url, _timeoutInSeconds, payload, (request) =>
+            {
+                var body = request.downloadHandler?.text ?? string.Empty;
+                var response = ApiModel.FromJson<STTJobResponse>(body);
+                var jobName = response?.JobName;
+
+                Debug.Log($"Transcription job started: {jobName}");
+                transcriptStartedCallback?.Invoke(jobName);
+            }));
+        }
+
+        [ContextMenu("STT/Download Transcription")]
+        public void DownloadTranscription(string jobName,
+            Action<string> transcriptionReceivedCallback = null)
+        {
+            // Ensure there is an active session
+            if (_session == null)
+            {
+                Debug.LogWarning("No active session. Please initiate a session first.");
+                return;
+            }
+
+            StopAllCoroutines();
+
+            StartCoroutine(KeepCallingCoroutine(
+                EndpointUrl(_sttDownloadEndpoint, jobName), .5f,
+                transcriptionReceivedCallback
+            ));
+
+        }
+
+        private IEnumerator KeepCallingCoroutine(string url,
+            float delayInSeconds, Action<string> callback)
+        {
+            // Make the API call to download the transcription
+            var wait = new WaitForSeconds(delayInSeconds);
+
+            bool keepCalling = true;
+            while (keepCalling)
+            {
+                yield return wait;
+                yield return ApiClient.CallEndpointWithGetCoroutine(
+                    url, _timeoutInSeconds, (request) =>
+                {
+                    var body = request.downloadHandler?.text ?? string.Empty;
+                    var response = ApiModel.FromJson<STTJobResponse>(body);
+
+                    if (response.Status == "FAILED")
+                    {
+                        keepCalling = false;
+                        Debug.LogError("Transcription job failed.");
+                        callback?.Invoke(null);
+                    }
+                    else if (response.Status == "COMPLETED")
+                    {
+                        keepCalling = false;
+                        callback?.Invoke(response?.Transcript);
+                    }
+                });
+            }
+        }
+
+
        [ContextMenu("Chat/Send Message")]
        public void SendChatMessage(string message = null,
            Action<string> responseReceivedCallback = null,
--- a/Assets/_Client/Scripts/API/ApiModel.cs
+++ b/Assets/_Client/Scripts/API/ApiModel.cs
@ -48,6 +48,30 @@ namespace PPGIA.X540.Project3.API
        public int ExpiresIn => expires_in;
    }

+    [Serializable]
+    public class STTUploadResponse : ApiModel
+    {
+        public string upload_url;
+        public string s3_key;
+
+        public string UploadUrl => upload_url;
+        public string S3Key => s3_key;
+    }
+
+    [Serializable]
+    public class STTJobResponse : ApiModel
+    {
+        public string job_name;
+        public string s3_uri;
+        public string status;
+        public string transcript;
+        
+        public string JobName => job_name;
+        public string S3Uri => s3_uri;
+        public string Status => status;
+        public string Transcript => transcript;
+    }
+
    internal enum Environment
    {
        Development,
--- a/Assets/_Client/Scripts/Core/AppManager.cs
+++ b/Assets/_Client/Scripts/Core/AppManager.cs
@ -7,6 +7,10 @@ namespace PPGIA.X540.Project3
 {
    public class AppManager : MonoBehaviour
    {
+        // Singleton instance
+        public static AppManager Instance { get; private set; }
+
+        #region -- Fields & Properties ----------------------------------------
        [Header("References")]
        [SerializeField]
        private UIController _uiController;
@ -14,59 +18,129 @@ namespace PPGIA.X540.Project3
        [SerializeField]
        private ApiClientManager _apiManager;

+        [SerializeField]
+        private AudioCapture _audioCapture;
+
+        private AudioClip _recordedClip;
+        #endregion ------------------------------------------------------------
+
+        #region -- MonoBehaviour Methods --------------------------------------
        private void Awake()
        {
-            if (_uiController == null)
-                _uiController = GetComponent<UIController>();
-            if (_apiManager == null)
-                _apiManager = GetComponent<ApiClientManager>();
-        }
+            // Singleton pattern implementation
+            if (Instance == null)
+            {
+                Instance = this;
+                DontDestroyOnLoad(gameObject);
+            }
+            else
+            {
+                Destroy(gameObject);
+                return;
+            }
+
+            if (_uiController == null)
+            {
+                Debug.LogError("UIController reference is missing in AppManager.");
+            }
+            if (_apiManager == null)
+            {
+                Debug.LogError("ApiClientManager reference is missing in AppManager.");
+            }
+            if (_audioCapture == null)
+            {
+                Debug.LogError("AudioCapture reference is missing in AppManager.");
+            }
+
+            _uiController.OnTalkButtonClicked += HandleTalkButtonClicked;
+            _audioCapture.OnRecordingSaved += HandleClipSaved;

-        void Start()
-        {
-            _apiManager.CloseSession(
-                () => _uiController.SessionActive = _apiManager.IsSessionActive);
        }

        private void OnEnable()
        {
-            _uiController.OnSessionButtonClicked += HandleSessionButtonClicked;
-            _uiController.OnSendChatButtonClicked += HandleSendChatButtonClicked;
+            _apiManager.InitiateSession(() =>
+            {
+                Debug.Log("API session initiated successfully.");
+            });
        }

-        private void OnDisable()
+        void OnDisable()
        {
-            _uiController.OnSessionButtonClicked -= HandleSessionButtonClicked;
-            _uiController.OnSendChatButtonClicked -= HandleSendChatButtonClicked;
+            if (_apiManager != null && _apiManager.IsSessionActive)
+            {
+                _apiManager.CloseSession(() =>
+                {
+                    Debug.Log("API session closed successfully.");
+                });
+            }
        }

-        private void HandleSessionButtonClicked()
+        private void OnDestroy()
+        {
+            _uiController.OnTalkButtonClicked -= HandleTalkButtonClicked;
+            _audioCapture.OnRecordingSaved -= HandleClipSaved;
+        }
+        #endregion ------------------------------------------------------------
+
+        private void HandleClipSaved(string filePath)
+        {
+            Debug.Log($"Audio clip saved at: {filePath}");
+
+            _apiManager.UploadAudioClip(
+                filePath,
+                (s3Key) =>
+                {
+                    Debug.Log($"Clip uploaded to: {s3Key}");
+                    _apiManager.StartTranscript(
+                        s3Key,
+                        (jobName) =>
+                        {
+                            Debug.Log($"Transcription job started: {jobName}");
+                            _apiManager.DownloadTranscription(jobName, (transcript) =>
+                            {
+                                Debug.Log($"Transcription completed: {transcript}");
+                                _uiController.AppendChatOutput($"\nUser: {transcript}\n");
+
+                                _apiManager.SendChatMessage(transcript,
+                                    (response) =>
+                                    {
+                                        _uiController.AppendChatOutput($"Bot: {response}\n");
+                                    }, () =>
+                                    {
+                                        // Speech synthesis finished.
+                                    });
+                                });
+                            });
+                        });
+
+            _uiController.CurrentState = UIController.UIState.Idle;
+        }
+
+        private void HandleTalkButtonClicked()
        {
            if (!_apiManager.IsSessionActive)
            {
-                _apiManager.InitiateSession(
-                    () => _uiController.SessionActive = _apiManager.IsSessionActive);
+                Debug.LogWarning("Session is not active. Cannot send message.");
+                return;
            }
-            else
-            {
-                _apiManager.CloseSession(
-                    () => _uiController.SessionActive = _apiManager.IsSessionActive
-                );
-            }
-        }

-        private void HandleSendChatButtonClicked(string message)
-        {
-            _apiManager.SendChatMessage(message, 
-                (responseMessage) => 
+            switch (_uiController.CurrentState)
            {
-                _uiController.ChatOutput += $"User: {message}\n";
-                _uiController.ChatOutput += $"Bot: {responseMessage}\n";
-            },
-                () =>
-            {
-                // Speech finished callback (optional)
-            });
+                case UIController.UIState.Idle:
+                    _audioCapture.StartRecording();
+                    _uiController.CurrentState = UIController.UIState.Recording;
+                    break;
+
+                case UIController.UIState.Recording:
+                    _audioCapture.StopRecording();
+                    _uiController.CurrentState = UIController.UIState.Idle;
+                    break;
+
+                case UIController.UIState.Processing:
+                    Debug.Log("Currently processing. Please wait.");
+                    break;
+            }
        }
    }
 }
--- a/Assets/_Client/Scripts/Core/AudioCapture.cs
+++ b/Assets/_Client/Scripts/Core/AudioCapture.cs
@ -18,6 +18,7 @@ namespace PPGIA.X540.Project3
            Hz96000 = 96000
        }

+        #region -- Fields & Properties ----------------------------------------
        [Header("Audio Capture Settings")]
        [SerializeField]
        private SampleRate _sampleRateInHz = SampleRate.Hz44100;
@ -54,9 +55,14 @@ namespace PPGIA.X540.Project3
        private List<short> _capturedSamples = 
            new List<short>(1024 * 32); // filled only on Stop
        private int _channels = 1; // microphone channel count (Unity usually mono)
+        
        private AudioClip _recordingClip;
+        public AudioClip GetRecordedClip() => _recordingClip;
+        
        private string _currentDevice;
+        #endregion ------------------------------------------------------------

+        #region -- MonoBehaviour Methods --------------------------------------
        private void Awake()
        {
            _audioSource = GetComponent<AudioSource>();
@ -67,6 +73,7 @@ namespace PPGIA.X540.Project3
        {
            StopRecording();
        }
+        #endregion ------------------------------------------------------------

        [ContextMenu("Start recording audio")]
        public void StartRecording()
@ -215,7 +222,6 @@ namespace PPGIA.X540.Project3
                    writer.Write(dataBytes);
                }
                LastSavedFilePath = filePath;
-                Debug.Log($"Audio saved to: {filePath}");
                OnRecordingSaved?.Invoke(filePath);
            }
            catch (Exception ex)
--- a/Assets/_Client/Scripts/Core/AudioCapture.cs.meta
+++ b/Assets/_Client/Scripts/Core/AudioCapture.cs.meta
--- a/Assets/_Client/Scripts/UI/UIController.cs
+++ b/Assets/_Client/Scripts/UI/UIController.cs
@ -6,86 +6,113 @@ using UnityEngine.UIElements;

 namespace PPGIA.X540.Project3
 {
-    [RequireComponent(typeof(UIController))]
+    [RequireComponent(typeof(UIDocument))]
    public class UIController : MonoBehaviour
    {
+        public enum UIState
+        {
+            Idle = 0,
+            Recording = 1,
+            Processing = 2
+        }
+
        private UIDocument _uiDocument;
        private VisualElement _root;

-        private readonly string[] _sessionButtonLabels = { 
-            "Iniciar Sessão", 
-            "Encerrar Sessão" 
+        #region -- Fields & Properties ----------------------------------------
+        private readonly string[] _sendChatButtonLabels = {
+            "Falar...",
+            "Enviar...",
+            "Processando... Aguarde..."
        };
-        private Button _sessionButton;
-        private Button _sendChatButton;
-        private int _currentSessionState = 0;

-        private TextField _chatInputField;
+        // UI controls --------------------------------------------------------
+        private Button _talkButton;
+
        private TextField _chatOutputField;
-
        public string ChatOutput
        {
            get => _chatOutputField.value;
            set => _chatOutputField.value = value;
        }

-        public bool SessionActive {
-            get => _currentSessionState == 1;
+        private ProgressBar _progressBar;
+        public float Progress
+        {
+            get => _progressBar.value;
+            set => _progressBar.value = value;
+        }
+
+        // State management ---------------------------------------------------
+        private UIState _currentState = UIState.Idle;
+        public UIState CurrentState
+        {
+            get => _currentState;
            set
            {
-                _currentSessionState = value ? 1 : 0;
-                UpdateStateForSession();
+                _currentState = value;
+                _talkButton.text = _sendChatButtonLabels[(int)value];
+                if (value == UIState.Processing)
+                {
+                    _talkButton.SetEnabled(false);
+                    _progressBar.value = 0.5f;
+                }
+                else
+                {
+                    _talkButton.SetEnabled(true);
+                    _progressBar.value = 0f;
+                }
            }
        }

-        public Action OnSessionButtonClicked { get; set; }
-        public Action<string> OnSendChatButtonClicked { get; set; }
-        public float Progress { get; set; }
+        // Event Handlers -----------------------------------------------------
+        public event Action OnTalkButtonClicked;

+        #endregion ------------------------------------------------------------
+
+        #region -- MonoBehaviour Methods --------------------------------------
        private void Awake()
        {
            _uiDocument = GetComponent<UIDocument>();
            _root = _uiDocument.rootVisualElement;

-            _sessionButton = _root.Q<Button>("B_Session");
-            _sendChatButton = _root.Q<Button>("B_SendChat");
-            _chatInputField = _root.Q<TextField>("TF_ChatInput");
-            _chatOutputField = _root.Q<TextField>("TF_ChatOutput");
+            _talkButton = _root.Q<Button>("B_Talk");
+            if (_talkButton == null)
+            {
+                Debug.LogError("Talk Button not found in UI.");
+            }

-            SessionActive = false;
+            _progressBar = _root.Q<ProgressBar>("PB_Progress");
+            if (_progressBar == null)
+            {
+                Debug.LogError("Progress Bar not found in UI.");
+            }
+
+            _chatOutputField = _root.Q<TextField>("TF_Dialogue");
+            if (_chatOutputField == null)
+            {
+                Debug.LogError("Chat Output Field not found in UI.");
+            }
+
+            CurrentState = UIState.Idle;
        }

-        void OnEnable()
-        {            
-            _sessionButton.clicked += OnSessionButtonClickedInternal;
-            _sendChatButton.clicked += OnSendChatButtonClickedInternal;
-        }
-
-        void OnDisable()
+        private void OnEnable()
        {
-            _sessionButton.clicked -= OnSessionButtonClickedInternal;
-            _sendChatButton.clicked -= OnSendChatButtonClickedInternal;
+            _talkButton.clicked += OnTalkButtonClickedInternal;
        }

-        private void UpdateStateForSession()
+        private void OnDisable()
        {
-            _sessionButton.text = _sessionButtonLabels[_currentSessionState];
-            
-            var enable = _currentSessionState == 1;
-            _chatInputField.SetEnabled(enable);
-            _sendChatButton.SetEnabled(enable);
+            _talkButton.clicked -= OnTalkButtonClickedInternal;
        }
+        #endregion ------------------------------------------------------------

-        private void OnSessionButtonClickedInternal()
-        {
-            OnSessionButtonClicked?.Invoke();
-            // SessionActive state will be updated externally
-        }
+        private void OnTalkButtonClickedInternal() => OnTalkButtonClicked?.Invoke();

-        private void OnSendChatButtonClickedInternal()
+        public void AppendChatOutput(string newText)
        {
-            OnSendChatButtonClicked?.Invoke(_chatInputField.value);
-            _chatInputField.value = string.Empty;
+            ChatOutput += newText;
        }
    }
 }
--- a/Assets/_Client/Settings/App.PanelSettings.asset
+++ b/Assets/_Client/Settings/App.PanelSettings.asset
@ -29,7 +29,7 @@ MonoBehaviour:
  m_Match: 0
  m_SortingOrder: 0
  m_TargetDisplay: 0
-  m_BindingLogLevel: 0
+  m_BindingLogLevel: 2
  m_ClearDepthStencil: 1
  m_ClearColor: 0
  m_ColorClearValue: {r: 0, g: 0, b: 0, a: 0}
Author	SHA1	Message	Date
Jonas Luz Jr.	7a000ac9e2	Updates app main scene.	2025-11-26 19:31:51 -03:00
Jonas Luz Jr.	e0daa00205	Adds STT functionality with audio upload Adds speech-to-text (STT) functionality by allowing users to upload audio clips, start transcription jobs, and download transcriptions. Introduces new API endpoints for STT upload, start, and download. Also, converts AudioClip to WAV byte array.	2025-11-26 19:31:12 -03:00
Jonas Luz Jr.	ea4535ebb6	Updates GUI for new working flow.	2025-11-26 19:30:37 -03:00
Jonas Luz Jr.	6c1ed05bd7	Refactors UI interaction and state management Improves UI element handling by encapsulating UI logic. Enhances state management for session activity and input enablement through properties. Introduces event handlers for button clicks to decouple UI interactions.	2025-11-26 07:21:44 -03:00