using System.Collections.Generic;
using System.Collections;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class AchievementUI : MonoBehaviour
{
    [Header("UI元素")]
    public Transform achievementContainer;
    public GameObject achievementItemPrefab;
    public Text progressText;
    public Button backButton;
    
    [Header("场景名称")]
    public string menuSceneName = "MenuScene";
    
    private List<GameObject> achievementItems = new List<GameObject>();
    
    private void Start()
    {
        if (achievementContainer == null)
        {
            achievementContainer = transform.Find("Content");
            if (achievementContainer == null)
            {
                achievementContainer = transform.Find("ScrollView/Viewport/Content");
            }
        }
        
        if (backButton != null)
        {
            backButton.onClick.AddListener(OnBackClicked);
        }
        
        StartCoroutine(LoadAchievementsWhenReady());
    }

    IEnumerator LoadAchievementsWhenReady()
    {
        if (AchievementManager.Instance == null)
        {
            Debug.LogWarning("AchievementManager未找到！");
            yield break;
        }

        float timeout = 5f;
        while (!AchievementManager.Instance.IsInitialized && timeout > 0f)
        {
            timeout -= Time.unscaledDeltaTime;
            yield return null;
        }

        if (!AchievementManager.Instance.IsInitialized)
        {
            Debug.LogWarning("成就数据加载超时，将显示当前缓存数据");
        }

        LoadAchievements();
    }
    
    void LoadAchievements()
    {
        if (AchievementManager.Instance == null)
        {
            Debug.LogWarning("AchievementManager未找到！");
            return;
        }
        
        foreach (var item in achievementItems)
        {
            if (item != null)
            {
                Destroy(item);
            }
        }
        achievementItems.Clear();
        
        List<AchievementData> achievements = AchievementManager.Instance.GetAllAchievements();
        
        int unlockedCount = 0;
        
        foreach (var achievement in achievements)
        {
            if (achievement.isUnlocked)
            {
                unlockedCount++;
            }
            
            CreateAchievementItem(achievement);
        }
        
        if (progressText != null)
        {
            progressText.text = $"已解锁: {unlockedCount}/{achievements.Count}";
        }
    }
    
    void CreateAchievementItem(AchievementData achievement)
    {
        if (achievementContainer == null || achievementItemPrefab == null)
        {
            Debug.LogWarning("成就容器或预制体未设置！");
            return;
        }
        
        GameObject itemObj = Instantiate(achievementItemPrefab, achievementContainer);
        achievementItems.Add(itemObj);
        
        Transform iconTransform = itemObj.transform.Find("IconImage");
        Transform bgTransform = itemObj.transform.Find("BackgroundImage");
        
        Image iconImage = iconTransform != null ? iconTransform.GetComponent<Image>() : null;
        Image bgImage = bgTransform != null ? bgTransform.GetComponent<Image>() : null;
        
        if (iconImage != null && achievement.icon != null)
        {
            iconImage.sprite = achievement.icon;
        }
        
        Text[] texts = itemObj.GetComponentsInChildren<Text>();
        if (texts.Length >= 3)
        {
            texts[0].text = achievement.achievementName;
            texts[1].text = achievement.description;
            texts[2].text = $"进度: {achievement.currentValue}/{achievement.targetValue}";
        }
        
        if (achievement.isUnlocked)
        {
            if (texts.Length >= 3)
            {
                texts[2].text = "已解锁 ✓";
                texts[2].color = Color.green;
            }
            
            if (bgImage != null)
            {
                bgImage.color = new Color(1f, 0.9f, 0.5f);
            }
        }
        else
        {
            if (bgImage != null)
            {
                bgImage.color = new Color(0.5f, 0.5f, 0.5f);
            }
        }
    }
    
    void OnBackClicked()
    {
        Debug.Log("返回菜单");
        SceneManager.LoadScene(menuSceneName);
    }
}