using System;
using System.Collections;
using UnityEngine;
using UnityEngine.UI;
using TMPro;

using RR.Common.UI;
using RR.Game2D.Core.Managers;
using UnityEngine.EventSystems;

public class LoseBannerController : MonoBehaviour
{
    [SerializeField] private GameEndUIController bannersController;
    
    [Header("Кнопки")]
    [SerializeField] private TextMeshProUGUI loseText;
    [SerializeField] private Button continueButton;
    [SerializeField] private TextMeshProUGUI continueButtonText;
    [SerializeField] private float continueButtonCountdown = 10f;
    [SerializeField] private Button mainMenuButton;
    
    private Coroutine continueCountdownCoroutine;
    
    public event Action ContinueClicked;
    
    private void OnEnable()
    {
        bannersController.LoseBannerShown += OnLoseBannerShown;
    }

    private void OnDisable()
    {
        bannersController.LoseBannerShown -= OnLoseBannerShown;
        // Остановим корутину, если объект деактивируется
        if (continueCountdownCoroutine != null)
        {
            StopCoroutine(continueCountdownCoroutine);
            continueCountdownCoroutine = null;
        }
    }

    private void Awake()
    {
        if (continueButton) continueButton.onClick.AddListener(OnContinueClicked);

        // Инициализируем видимость/интерактивность кнопок в безопасное состояние
        if (continueButton) continueButton.gameObject.SetActive(false);
        if (continueButton && continueButtonText) continueButtonText.text = string.Empty;
    }

    private void OnLoseBannerShown(float gameTime)
    {
        // EventSystem.current.firstSelectedGameObject = continueButton.gameObject;
        EventSystem.current.SetSelectedGameObject(continueButton.gameObject);
        
        loseText.text = $"Время игры: {GameEndUIController.FormatTime(gameTime)}";
        
        if (continueButtonCountdown <= 0f)
        {
            ContinueClicked?.Invoke();
            GameManager.Instance.SetPause(false);
            GameManager.Instance.LoadScene("MainMenu", false);
        }

        if (continueButton)
        {
            continueButton.gameObject.SetActive(true);
            continueButton.interactable = true;
        }
        //
        // if (mainMenuButton)
        //     mainMenuButton.gameObject.SetActive(false);

        // Остановим предыдущую корутину, если есть
        if (continueCountdownCoroutine != null)
        {
            StopCoroutine(continueCountdownCoroutine);
            continueCountdownCoroutine = null;
        }

        continueCountdownCoroutine = StartCoroutine(ContinueCountdownCoroutine(continueButtonCountdown));
    }
    
    private IEnumerator ContinueCountdownCoroutine(float duration)
    {
        
        float elapsed = 0f;
        // Обновляем сразу первоначальный текст
        int initialSeconds = Mathf.RoundToInt(duration);
        UpdateContinueText(initialSeconds);

            while (elapsed < duration)
            {
                // Using yield return null and manual timing with unscaled time for more reliable updates
                float startTime = Time.unscaledTime;
                yield return null;
                
                // Wait for approximately 1 second using unscaled time
                while (Time.unscaledTime - startTime < 1.0f)
                {
                    yield return null;
                }
                
                elapsed += 1f;
                int remaining = Mathf.Max(0, Mathf.RoundToInt(duration - elapsed));
                UpdateContinueText(remaining);
            }

            if (continueButton)
            {
                ContinueClicked?.Invoke();
                GameManager.Instance.SetPause(false);
                GameManager.Instance.LoadScene("MainMenu", false);
            }

        continueCountdownCoroutine = null;
    }

    private void UpdateContinueText(int secondsRemaining)
    {
        if (continueButtonText)
            continueButtonText.text = $"Продолжить? ({secondsRemaining})";
    }

    private void OnContinueClicked()
    {
        // При клике на "Продолжить" — остановим таймер и продолжим игру
        if (continueCountdownCoroutine != null)
        {
            StopCoroutine(continueCountdownCoroutine);
            continueCountdownCoroutine = null;
        }
        
        ContinueClicked?.Invoke();
        GameManager.Instance.SetPause(false);
        GameManager.Instance.ContinueGame();
    }
}