using Boxes;
using UnityEngine;
using UnityEngine.SceneManagement;
using TMPro;

public class GameManager : MonoBehaviour
{
    [Header("Ссылки на UI")]
    public TextMeshProUGUI timerText;
    public TextMeshProUGUI boxesText;
    public GameObject endGameScreen;
    public TextMeshProUGUI finalScoreText; 
    
    private int _boxesCollected;
    private float _timeAlive;
    private bool _isPlaying = true;
    private int _scoreMultiplier = 1;

    public static GameManager Instance { get; private set; }

    void Awake()
    {
        if (Instance == null) Instance = this;
        else Destroy(gameObject);
    }
    
    private void OnEnable()
    {
        GameEvents.OnBoxCollected += OnBoxCollected;
        GameEvents.OnPlayerDied += EndGame;
    }
    
    private void OnDisable()
    {
        GameEvents.OnBoxCollected -= OnBoxCollected;
        GameEvents.OnPlayerDied -= EndGame;
    }

    void Start()
    {
        _scoreMultiplier = 1;
        _timeAlive = 0f;        
        _isPlaying = true;
        _boxesCollected = 0;

        if (endGameScreen != null) endGameScreen.SetActive(false);
        
        Time.timeScale = 1f;
        UpdateUI();
    }

    void Update()
    {
        if (!_isPlaying) return;
        _timeAlive += Time.deltaTime;
        
        UpdateUI();
    }
    
    private void OnBoxCollected(BoxData boxData)
    {
        if (!_isPlaying) return;

        switch (boxData.effectType)
        {
            case BoxData.BoxEffectType.AddScore:
                int addAmount = (int)boxData.effectValue * _scoreMultiplier;
                for(int i = 0; i < addAmount; i++)
                {
                    _boxesCollected++;
                    GameEvents.OnBoxAddedToTruck?.Invoke();
                }
                break;
        
            case BoxData.BoxEffectType.LoseScore: 
                int loseAmount = (int)boxData.effectValue;
                for(int i = 0; i < loseAmount; i++)
                {
                    if (_boxesCollected > 0)
                    {
                        _boxesCollected--;
                        GameEvents.OnBoxLostFromTruck?.Invoke();
                    }
                }
                break;
        
            case BoxData.BoxEffectType.SpecialFurniture:
               
                Debug.Log("Собрана мебель!");
                break;
        }

        UpdateUI();
    }

    public void SetScoreMultiplier(int multiplier)
    {
        _scoreMultiplier = multiplier;
    }

    void UpdateUI()
    {
        if (timerText != null)
        {
            timerText.text = $"Время: {Mathf.FloorToInt(_timeAlive / 60):00}:{Mathf.FloorToInt(_timeAlive % 60):00}";
        }
        if (boxesText != null)
        {
            boxesText.text = $"Собрано: {_boxesCollected}";
        }
    }

    void EndGame()
    {
        if (!_isPlaying) return;
        _isPlaying = false;
        
        if (endGameScreen != null) endGameScreen.SetActive(true);
        if (finalScoreText != null)
        {
            finalScoreText.text = $"Вы собрали: {_boxesCollected} коробок!";
        }
    }
    
    public void RestartGame()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);
    }
}