using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using TMPro;
using UnityEngine;

public class ViaggioAIDebugPanelController : MonoBehaviour
{

    #region Inspector Properties

    [Header("Scene Objects")]
    [SerializeField]
    private TMP_Text stateTextMesh;

    [SerializeField]
    private TMP_Text lastThrownEventTextMesh;

    [SerializeField]
    private TMP_Text recognziedTextTextMesh;

    [SerializeField]
    private TMP_Text possibleIntentsTextMesh;

    [SerializeField]
    private TMP_Text recognizedIntentTextMesh;

    [SerializeField]
    private TMP_Text failedIntentRecognitionTextMesh;

    #endregion

    #region Public Properties

    #endregion

    #region Private Properties

    private ViaggioAIManager vaim { get { return ViaggioAIManager.Instance; } }

    #endregion

    #region Framework Functions

    async void OnEnable()
    {
        this.clearTexts();

        while (vaim == null)
        {
            await Task.Delay(10);
        }

        this.subscribeToEvents();

    }

    void OnDisable()
    {
        this.unsubscribeFromEvents();
    }

    #endregion

    #region Events

    private void subscribeToEvents()
    {
        // State
        vaim.OnViaggioAIStateChangedEvent += this.onViaggioAIStateChanged;

        // Speech Input
        vaim.OnUserSpeechInputStartedEvent += this.onUserSpeechInputStarted;
        vaim.OnPartialTranscriptionChangedEvent += this.onPartialTranscriptionChanged;
        vaim.OnFullTranscriptionChangedEvent += this.onFullTranscriptionChanged;
        vaim.OnUserSpeechInputEndedEvent += this.onUserSpeechInputEnded;

        // Speech Output
        vaim.OnSpeechOutputStartedEvent += this.onSpeechOutputStarted;
        vaim.OnSpeechOutputEndedEvent += this.onSpeechOutputEnded;

        // Intent Recognition
        vaim.OnIntentRecognitionInitiatedEvent += this.onIntentRecognitionInitiated;
        vaim.OnIntentRecognitionSucceededEvent += this.onIntentRecognitionSucceeded;
        vaim.OnIntentRecognitionFailedEvent += this.onIntentRecognitionFailed;
    }


    private void unsubscribeFromEvents()
    {
        if (vaim != null)
        {
            // State
            vaim.OnViaggioAIStateChangedEvent -= this.onViaggioAIStateChanged;

            // Speech Input
            vaim.OnUserSpeechInputStartedEvent -= this.onUserSpeechInputStarted;
            vaim.OnPartialTranscriptionChangedEvent -= this.onPartialTranscriptionChanged;
            vaim.OnFullTranscriptionChangedEvent -= this.onFullTranscriptionChanged;
            vaim.OnUserSpeechInputEndedEvent -= this.onUserSpeechInputEnded;

            // Speech Output
            vaim.OnSpeechOutputStartedEvent -= this.onSpeechOutputStarted;
            vaim.OnSpeechOutputEndedEvent -= this.onSpeechOutputEnded;

            // Intent Recognition
            vaim.OnIntentRecognitionInitiatedEvent -= this.onIntentRecognitionInitiated;
            vaim.OnIntentRecognitionSucceededEvent -= this.onIntentRecognitionSucceeded;
            vaim.OnIntentRecognitionFailedEvent -= this.onIntentRecognitionFailed;
        }
    }

    private void onViaggioAIStateChanged(object sender, EViaggioAIState newState)
    {
        if (newState == EViaggioAIState.Listening)
        {
            this.clearTexts();
        }

        this.updatePossibleIntentsText();

        this.stateTextMesh.text = newState.ToString();
    }

    private void onUserSpeechInputStarted(object sender, object e)
    {
        this.lastThrownEventTextMesh.text = "OnUserSpeechInputStarted";
    }

    private void onPartialTranscriptionChanged(object sender, string partialTranscription)
    {
        this.lastThrownEventTextMesh.text = "OnPartialTranscriptionChanged";

        this.recognziedTextTextMesh.text = partialTranscription;
    }

    private void onFullTranscriptionChanged(object sender, string fullTranscription)
    {
        this.lastThrownEventTextMesh.text = "OnFullTranscriptionChanged";

        this.recognziedTextTextMesh.text = fullTranscription;
    }

    private void onUserSpeechInputEnded(object sender, object e)
    {
        this.lastThrownEventTextMesh.text = "OnUserSpeechInputEnded";
    }

    private void onSpeechOutputStarted(object sender, bool e)
    {
        this.lastThrownEventTextMesh.text = "OnSpeechOutputStarted";
    }

    private void onSpeechOutputEnded(object sender, bool e)
    {
        this.lastThrownEventTextMesh.text = "OnSpeechOutputEnded";
    }

    private void onIntentRecognitionInitiated(object sender, bool e)
    {
        this.lastThrownEventTextMesh.text = "OnIntentRecognitionInitiated";

        this.updatePossibleIntentsText();
    }

    private void onIntentRecognitionSucceeded(object sender, string intentID)
    {
        this.lastThrownEventTextMesh.text = "OnIntentRecognitionSucceeded";

        this.recognizedIntentTextMesh.text = intentID;
    }

    private void onIntentRecognitionFailed(object sender, bool e)
    {
        this.lastThrownEventTextMesh.text = "OnIntentRecognitionFailed";

        this.failedIntentRecognitionTextMesh.text = "No intent recognized";
    }

    #endregion

    #region Public Functions

    #endregion

    #region Private Functions

    private void clearTexts()
    {
        this.stateTextMesh.text = "";
        this.lastThrownEventTextMesh.text = "";
        this.recognziedTextTextMesh.text = "";
        this.possibleIntentsTextMesh.text = "";
        this.recognizedIntentTextMesh.text = "";
        this.failedIntentRecognitionTextMesh.text = "";
    }

    private void updatePossibleIntentsText()
    {
        RequestDataModel intentRequestDataModel = vaim.PendingRequestDataModel;

        if (intentRequestDataModel == null)
        {
            this.possibleIntentsTextMesh.text = "";
            return;
        }

        StringBuilder sb = new StringBuilder();

        foreach (KeyValuePair<string, string> keyValuePair in intentRequestDataModel.PossibleIntents)
        {
            sb.AppendLine($"{keyValuePair.Key}: \"{keyValuePair.Value}\"");
        }

        this.possibleIntentsTextMesh.text = sb.ToString();
    }

    #endregion

}