using System;
using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;

[RequireComponent(typeof(TextMeshProUGUI))]
[RequireComponent(typeof(AudioSource))]
public class VoiceLinePlayer : MonoBehaviour
{
    [Serializable]
    public class CloseCaption
    {
        public string text;
        public float timing;
    }
    
    // singleton
    public static VoiceLinePlayer Instance { get; private set; }
    
    
    // references
    private TextMeshProUGUI _subtitleText;
    private AudioSource _audioSource;
    
    private void Awake()
    {
        SetInstance();
        _subtitleText = GetComponent<TextMeshProUGUI>();
        _audioSource = GetComponent<AudioSource>();
    }
    
    private void OnValidate()
    {
        SetInstance();
    }
    
    private void SetInstance()
    {
        if (Instance == null)
        {
            Instance = this;
        }
        else
        {
            Debug.LogError("VoiceLinePlayer Instance already exists.");
        }
    }

    private void Update()
    {
        if (!_audioSource.isPlaying)
        {
            _subtitleText.text = "";
        }
    }

    public void PlayLine(AudioClip clip, List<CloseCaption> cc)
    {
        _audioSource.clip = clip;
        _audioSource.Play();
        foreach (var caption in cc)
        {
            StartCoroutine(ShowCaption(caption.text, caption.timing));
        }
    }
    
    private IEnumerator ShowCaption(string text, float timing)
    {
        yield return new WaitForSeconds(timing);
        _subtitleText.text = text;
    }
}