using DG.Tweening;
using TMPro;
using UnityEngine;

public class CafeWaiterNPC : NPCController
{
    public FMODWhisperBridge fmodWhisperBridge;
    public TextMeshProUGUI notepadText;
    public GameObject notepad;

    public Transform backRoom;
    public float backRoomMovingTime = 5f;

    private Vector3 notepadOriginalRotation;
    private Vector3 notepadFlippedRotation;
    private Vector3 startingPosition;

    // states:
    // 0 - idle
    // 1 - waiting for player order
    // 2 - waiting for player to answer "is this correct?"
    // 3 - bringing food
    // 4 - waiting for player to go away
    private int state;
    private float lastPlayerVoiceUpdateTime;

    private void Awake()
    {
        state = 0;
        lastPlayerVoiceUpdateTime = Time.time;
        startingPosition = transform.position;
    }

    private void Start()
    {
        notepadOriginalRotation = notepad.transform.localRotation.eulerAngles;
        notepadFlippedRotation = notepadOriginalRotation + new Vector3(0, 180, 0);
    }

    protected override void OnPlayerApproach()
    {
        if (state == 0)
        {
            AudioManager.Instance.PlayDialogue(voiceLineKeys[0], gameObject);

            fmodWhisperBridge.OnWhisperSegmentUpdated += OnPlayerSpeechUpdate;
            fmodWhisperBridge.OnWhisperSegmentFinished += OnPlayerSpeechFinished;
            fmodWhisperBridge.ActivateRecording();

            state = 1;
        }
    }

    protected override void OnPlayerLeave()
    {
        fmodWhisperBridge.OnWhisperSegmentUpdated -= OnPlayerSpeechUpdate;
        fmodWhisperBridge.OnWhisperSegmentFinished -= OnPlayerSpeechFinished;
        fmodWhisperBridge.DeactivateRecording();

        // If currently not bringing food and the player leaves, then go back to idle state
        if (state != 3)
        {
            state = 0;
        }
    }

    private void OnPlayerSpeechFinished(string playerText)
    {
        if (Time.time < lastPlayerVoiceUpdateTime + 0.5f)
        {
            Debug.Log("voiceline: player said '" + playerText + "' but not enough time passed");
            return;
        }
        if (string.IsNullOrEmpty(playerText) || playerText.Contains("BLANK_AUDIO"))
        {
            Debug.Log("player speech event but result empty");
            return;
        }
        lastPlayerVoiceUpdateTime = Time.time;
        Debug.Log("state = " + state.ToString() + ", voiceline: player text: " + playerText);

        if (state == 1)
        {
            // Show transcription and ask whether it is correct
            notepadText.text = playerText;
            notepad.transform.DOLocalRotate(notepadFlippedRotation, 0.5f);
            AudioManager.Instance.PlayDialogue(voiceLineKeys[1], gameObject);
            state = 2;
        } else if (state == 2)
        {
            // Flip notepad back
            notepad.transform.DOLocalRotate(notepadOriginalRotation, 0.5f);
            // if player answered positively, bring food, otherwise ask again
            if (playerText.ToLower().Contains("yes"))
            {
                AudioManager.Instance.PlayDialogue(voiceLineKeys[2], gameObject);
                BringFood();
                state = 3;
            } else
            {
                AudioManager.Instance.PlayDialogue(voiceLineKeys[3], gameObject);
                state = 1;
            }
        }
    }

    private void OnPlayerSpeechUpdate(string playerText)
    {
        if (string.IsNullOrEmpty(playerText) || playerText.Contains("BLANK_AUDIO"))
        {
            return;
        }
        notepadText.text = playerText;
    }

    private void BringFood()
    {
        notepad.SetActive(false);
        transform.DOMove(backRoom.position, backRoomMovingTime).OnComplete(() =>
        {
            // Come back
            transform.DOMove(startingPosition, backRoomMovingTime).OnComplete(() =>
            {
                notepad.SetActive(true);
                AudioManager.Instance.PlayDialogue(voiceLineKeys[4], gameObject);

                state = 4;
            });
        });
    }
}