using UnityEngine;
using TMPro; // Required for TextMeshPro

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

    [Header("Player UI")]
    public TextMeshProUGUI healthText;
    
    [Header("Wave UI")]
    public TextMeshProUGUI waveText;
    public TextMeshProUGUI enemiesLeftText;

    void Awake()
    {
        // Simple Singleton setup for the prototype
        if (Instance == null)
        {
            Instance = this;
        }
        else
        {
            Destroy(gameObject);
        }
    }

    public void UpdatePlayerHealth(int currentHealth, int maxHealth)
    {
        if (healthText != null)
        {
            healthText.text = $"HP: {currentHealth} / {maxHealth}";
        }
    }

    public void UpdateWaveProgress(int currentWave, int totalWaves)
    {
        if (waveText != null)
        {
            // If totalWaves is 0, it means endless mode
            string totalString = totalWaves > 0 ? totalWaves.ToString() : "???";
            waveText.text = $"Wave: {currentWave} / {totalString}";
        }
    }

    public void UpdateEnemiesRemaining(int enemiesAlive)
    {
        if (enemiesLeftText != null)
        {
            enemiesLeftText.text = $"Enemies Left: {enemiesAlive}";
        }
    }
}