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

public enum NarrationID
{
    Intro,
    NewEmail,
    ScanEmail,
    CorrectReportChoice,
    CorrectIgnoreChoice,
    WrongIgnoreChoice,
    Feedback,
    GameEnd
}

public class NarrationPlayer : MonoBehaviour
{
    public static NarrationPlayer Instance { get; private set; }

    [Header("Narration Assets")]
    public List<NarrationData> narrationDatabase;

    [Header("Subtitle Settings")]
    public TextMeshProUGUI subtitleText;
    public float charDelay = 0.03f;

    private AudioSource audioSource;
    private Tween typewriterTween;
    private Dictionary<NarrationID, NarrationData> narrationMap;

    private void Awake()
    {
        if (Instance != null && Instance != this)
        {
            Destroy(gameObject);
            return;
        }

        Instance = this;
        DontDestroyOnLoad(gameObject);

        audioSource = gameObject.AddComponent<AudioSource>();
        audioSource.playOnAwake = false;

        narrationMap = new Dictionary<NarrationID, NarrationData>();
        foreach (var data in narrationDatabase)
        {
            if (data != null && !narrationMap.ContainsKey(data.narrationID))
                narrationMap[data.narrationID] = data;
        }
    }

    public void PlayNarration(NarrationID id, System.Action onComplete = null)
    {
        if (!narrationMap.TryGetValue(id, out var narrationData))
        {
            Debug.LogWarning($"Narration not found for: {id}");
            return;
        }

        bool isArabic = LanguageManager.Instance.IsArabic;
        AudioClip clip = isArabic ? narrationData.arabicClip : narrationData.englishClip;

        if (clip == null)
        {
            Debug.LogWarning($"Missing audio clip for {id} in language: {(isArabic ? "Arabic" : "English")}");
            return;
        }

        if (audioSource.isPlaying)
            audioSource.Stop();

        audioSource.clip = clip;
        audioSource.Play();

        if (!string.IsNullOrEmpty(narrationData.localizationKey))
        {
            string rawSubtitle = LanguageManager.Instance.GetLocalizedText(narrationData.localizationKey);
            string subtitle = isArabic
                ? ArabicFixerHelper.FixPreservingTags(rawSubtitle)
                : rawSubtitle;

            // TMP settings per language
            subtitleText.font = LanguageManager.Instance.GetCurrentFont();
            subtitleText.fontSize = isArabic ? 26 : 36;
           // subtitleText.alignment = isArabic ? TextAlignmentOptions.Right : TextAlignmentOptions.Left;
            subtitleText.overflowMode = TextOverflowModes.Page;
            subtitleText.isRightToLeftText = false; // MUST be false with ArabicFixer

            AppendSubtitle(subtitle, isArabic);
        }

        if (onComplete != null)
            StartCoroutine(InvokeAfterNarration(clip.length, onComplete));
    }

    private void AppendSubtitle(string fullText, bool isArabic)
    {
        typewriterTween?.Kill();
        subtitleText.text = "";

        if (isArabic)
        {
            StartCoroutine(ShowArabicByPages(fullText));
            return;
        }

        int totalLength = fullText.Length;
        int currentIndex = 0;

        typewriterTween = DOTween.To(() => currentIndex, x =>
        {
            currentIndex = x;
            subtitleText.text = fullText.Substring(0, currentIndex);
            subtitleText.ForceMeshUpdate();
            subtitleText.pageToDisplay = subtitleText.textInfo.pageCount;
        }, totalLength, totalLength * charDelay).SetEase(Ease.Linear);
    }

    private IEnumerator ShowArabicByPages(string fullText)
    {
        subtitleText.text = fullText;
        subtitleText.ForceMeshUpdate();

        int totalPages = subtitleText.textInfo.pageCount;

        for (int i = 1; i <= totalPages; i++)
        {
            subtitleText.pageToDisplay = i;
            yield return new WaitForSeconds(5f); // Adjust delay per page
        }
    }

    private IEnumerator InvokeAfterNarration(float delay, System.Action callback)
    {
        yield return new WaitForSeconds(delay);
        callback?.Invoke();
    }

    public void StopNarration()
    {
        if (audioSource.isPlaying)
            audioSource.Stop();

        typewriterTween?.Kill();
    }

    public void ClearSubtitles()
    {
        typewriterTween?.Kill();
        subtitleText.text = "";
    }

    public bool IsPlaying => audioSource.isPlaying;
}