using UnityEngine;
using System.Collections;

public class ChestUIController : MonoBehaviour
{
    public static ChestUIController Instance;

    [Header("动画播放完等待几秒后关闭")]
    public float closeDelay = 0.3f;

    [Header("关联对象")]
    public GameObject chestOpenObj;
    public GameObject chestFlyObj;

    private Animator openAnimator;
    private CanvasGroup canvasGroup;
    private BoatController boat;

    void Awake()
    {
        Instance = this;
        openAnimator = chestOpenObj
            .GetComponent<Animator>();
        canvasGroup = GetComponent<CanvasGroup>();

        canvasGroup.alpha = 0;
        canvasGroup.blocksRaycasts = false;
        gameObject.SetActive(false);
    }

    public void PlayChestAnimation(
        BoatController boatRef)
    {
        boat = boatRef;
        gameObject.SetActive(true);
        StartCoroutine(ShowChest());
    }

    IEnumerator ShowChest()
    {
        // 暂停敌人
        GameManager.Instance.PauseEnemies();

        canvasGroup.blocksRaycasts = true;
        float t = 0;
        while (t < 1f)
        {
            t += Time.deltaTime * 3f;
            canvasGroup.alpha = t;
            yield return null;
        }
        canvasGroup.alpha = 1f;

        openAnimator.SetTrigger("Open");
        yield return null;

        float animLength = openAnimator
            .GetCurrentAnimatorStateInfo(0).length;
        yield return new WaitForSeconds(
            animLength + closeDelay
        );

        StartCoroutine(HideChest());
    }

    IEnumerator HideChest()
    {
        float t = 1f;
        while (t > 0)
        {
            t -= Time.deltaTime * 3f;
            canvasGroup.alpha = t;
            yield return null;
        }
        canvasGroup.alpha = 0;
        canvasGroup.blocksRaycasts = false;
        gameObject.SetActive(false);

        // 恢复敌人
        GameManager.Instance.ResumeEnemies();

        // 恢复小船
        if (boat != null)
            boat.ResumeAfterAnimation();

        // 检查是否收集完所有宝箱
        if (CollectManager.Instance != null &&
            CollectManager.Instance
                .IsAllCollected())
        {
            Debug.Log(
                "✅ 最后一个动画播完，触发胜利！"
            );
            GameManager.Instance.WinGame();
        }
    }
}