using UnityEngine;
using UnityEngine.UI;
using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine.Localization;
using OpenCvSharp;

public class TutorialHintManager : MonoBehaviour
{
    public TextMeshProUGUI tutorialHintText;  // Assign this in the inspector with your Text UI object
    public List<LocalizedString> tutorialHints;  // List of tutorial hints
    public float displayDuration = 5f;  // Duration to display each hint in seconds

    private List<LocalizedString> remainingHints;

    private static TutorialHintManager _instance;
    public static TutorialHintManager GetInstance() { return _instance; }

    private void Awake()
    {
        if (!_instance)
        {
            _instance = this;
        }
    }

    void Start()
    {
        if (tutorialHints.Count == 0)
        {
            Debug.LogError("Tutorial hints list is empty.");
            return;
        }

        // Make a copy of the tutorial hints to track which ones have been displayed
        remainingHints = new List<LocalizedString>(tutorialHints);     
    }

    public void DisplayLoadingTutorialHint() 
    {
        // Start displaying hints
        StartCoroutine(DisplayNextHint());
    }

    public void StopDisplayingTutorialHints() 
    {
        StopAllCoroutines();
        tutorialHintText.text = "";
    }

    IEnumerator DisplayNextHint()
    {
        if(remainingHints.Count == 0) 
        {
            // Make a copy of the tutorial hints to track which ones have been displayed
            remainingHints = new List<LocalizedString>(tutorialHints);
        }

        while (remainingHints.Count > 0)
        {
            // Pick a random hint
            int randomIndex = Random.Range(0, remainingHints.Count);
            LocalizedString currentHint = remainingHints[randomIndex];

            // Fetch the localized string asynchronously
            yield return currentHint.GetLocalizedStringAsync().Task;

            // Display the localized hint
            tutorialHintText.text = currentHint.GetLocalizedString();

            // Remove the displayed hint from the list to avoid repetition
            remainingHints.RemoveAt(randomIndex);

            // Wait for the display duration before showing the next hint
            yield return new WaitForSecondsRealtime(displayDuration);
        }

        // Optional: Loop back if you want to restart the hints after all have been displayed
        remainingHints = new List<LocalizedString>(tutorialHints);
        StartCoroutine(DisplayNextHint());
    }
}