using System.Threading.Tasks;
using TMPro;
using UnityEngine;
using UnityEngine.XR.Interaction.Toolkit;

public class RadioTransmitter : XRGrabInteractable
{
    public delegate void OnPlayerPickUpDelegate();
    public event OnPlayerPickUpDelegate OnPlayerPickUp;
    public delegate void OnPlayerFinishedSpeakingDelegate();
    public event OnPlayerFinishedSpeakingDelegate OnPlayerFinishedSpeaking;

    [Header("Custom Config")]
    public FMODWhisperBridge fmodWhisperBridge;
    public ReleasableButton radioButton;
    public TextMeshProUGUI computerScreen;

    [Header("Particle System Config")]
    public ParticleSystem particles;
    public float baseEmissionRate = 3;
    public float maxExtraEmissionRate = 50;

    private bool isProcessing;
    private ParticleSystem.EmissionModule particleEmission;

    // Start is called before the first frame update
    void Start()
    {
        radioButton.OnButtonPressed += OnRadioButtonPressed;
        radioButton.OnButtonReleased += OnRadioButtonReleased;
        radioButton.Lock();
        isProcessing = false;

        particleEmission = particles.emission;
        particleEmission.enabled = false;
    }

    // Update is called once per frame
    void Update()
    {
        if (particles.emission.enabled)
        {
            particles.transform.LookAt(computerScreen.transform.position);
            Debug.Log("speech volume normalized: " + fmodWhisperBridge.GetNormalizedVolume01());
            Debug.Log("speech volume decibels: " + fmodWhisperBridge.GetCurrentVolumeDb());
            particleEmission.rateOverTime = baseEmissionRate + fmodWhisperBridge.GetNormalizedVolume01() * maxExtraEmissionRate;
        }
    }

    protected async override void OnSelectEntered(SelectEnterEventArgs args)
    {
        base.OnSelectEntered(args);
        OnPlayerPickUp?.Invoke();

        await Task.Delay(100);
        radioButton.Unlock();
    }

    private void OnRadioButtonPressed()
    {
        AudioManager.Instance.PlayAttachedInstance(FMODEvents.Instance.RadioButton, gameObject);
        if (!isProcessing)
        {
            isProcessing = true;
            fmodWhisperBridge.OnWhisperSegmentUpdated += OnPlayerSpeechUpdated;
            fmodWhisperBridge.OnWhisperSegmentFinished += OnPlayerSpeechFinished;
            fmodWhisperBridge.ActivateRecording();

            particleEmission.enabled = true;
        }
    }

    private void OnRadioButtonReleased()
    {
        AudioManager.Instance.PlayAttachedInstance(FMODEvents.Instance.RadioButton, gameObject);
    }

    private void OnPlayerSpeechUpdated(string text)
    {
        computerScreen.text = text;
        //OnPlayerFinishedSpeaking?.Invoke();
    }

    private void OnPlayerSpeechFinished(string playerText)
    {
        computerScreen.text = playerText;
        isProcessing = false;
        OnPlayerFinishedSpeaking?.Invoke();

        fmodWhisperBridge.OnWhisperSegmentUpdated -= OnPlayerSpeechUpdated;
        fmodWhisperBridge.OnWhisperSegmentFinished -= OnPlayerSpeechFinished;
        fmodWhisperBridge.DeactivateRecording();

        particleEmission.enabled = false;
    }
}