using UnityEngine;
using System.Collections;
using UnityEngine.SceneManagement;

public class GameManager : MonoBehaviour
{
    public static GameManager Instance;

    [Header("游戏 UI")]
    public GameObject losePanel;
    public GameObject winPanel;

    private BoatController boatController;
    private bool isGameOver = false;
    private bool isWin = false;
    private SeaMonster[] seaMonsters;
    private PirateShip[] pirateShips;

    void Awake()
    {
        Instance = this;
    }

    void Start()
    {
        boatController = FindObjectOfType
            <BoatController>();
        seaMonsters =
            FindObjectsOfType<SeaMonster>();
        pirateShips =
            FindObjectsOfType<PirateShip>();

        if (losePanel != null)
            losePanel.SetActive(false);
        if (winPanel != null)
            winPanel.SetActive(false);
    }

    public void PauseEnemies()
    {
        foreach (var monster in seaMonsters)
            if (monster != null)
                monster.SetPaused(true);
        foreach (var ship in pirateShips)
            if (ship != null)
                ship.SetPaused(true);
    }

    public void ResumeEnemies()
    {
        foreach (var monster in seaMonsters)
            if (monster != null)
                monster.SetPaused(false);
        foreach (var ship in pirateShips)
            if (ship != null)
                ship.SetPaused(false);
    }

    public void GameOver()
    {
        if (isGameOver || isWin) return;
        isGameOver = true;

        Debug.Log("💀 游戏结束！");

        if (boatController != null)
            boatController.StopAndTurnAround();

        PauseEnemies();
        StartCoroutine(ShowLosePanel());
    }

    public void WinGame()
    {
        if (isGameOver || isWin) return;
        isWin = true;

        Debug.Log("🎉 游戏胜利！");

        if (boatController != null)
            boatController.StopAndTurnAround();

        PauseEnemies();
        StartCoroutine(ShowWinPanel());
    }

    IEnumerator ShowLosePanel()
    {
        yield return new WaitForSeconds(0.5f);

        if (losePanel != null)
            losePanel.SetActive(true);

        Time.timeScale = 0f;
    }

    IEnumerator ShowWinPanel()
    {
        // 动画已经播完才调用
        // 只需短暂等待
        yield return new WaitForSeconds(0.5f);

        if (winPanel != null)
            winPanel.SetActive(true);

        Time.timeScale = 0f;
    }

    public void RestartGame()
    {
        Time.timeScale = 1f;
        isGameOver = false;
        isWin = false;
        SceneManager.LoadScene(
            SceneManager.GetActiveScene().name
        );
    }
}