using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class MenuUI : MonoBehaviour
{
    private const string GuestTotalGoldKey = "guest_totalGold";

    [Header("UI元素")]
    public Text welcomeText;
    public Text userInfoText;
    public Button startGameButton;
    public Button reviewButton;
    public Button achievementsButton;
    public Button logoutButton;
    
    [Header("场景名称")]
    public string gameSceneName = "GameScene";
    public string achievementSceneName = "AchievementScene";
    public string loginSceneName = "LoginScene";
    
    private void Start()
    {
        UpdateUserInfo();
        
        if (startGameButton != null)
        {
            startGameButton.onClick.AddListener(OnStartGameClicked);
        }
        
        if (reviewButton != null)
        {
            reviewButton.onClick.AddListener(OnReviewClicked);
        }
        
        if (achievementsButton != null)
        {
            achievementsButton.onClick.AddListener(OnAchievementsClicked);
        }
        
        if (logoutButton != null)
        {
            logoutButton.onClick.AddListener(OnLogoutClicked);
        }
    }
    
    void UpdateUserInfo()
    {
        if (LoginManager.Instance == null)
        {
            Debug.LogWarning("LoginManager未找到！");
            return;
        }
        
        UserData user = LoginManager.Instance.GetCurrentUser();
        
        if (user != null)
        {
            if (welcomeText != null)
            {
                welcomeText.text = $"欢迎，{user.username}！";
            }
            
            if (userInfoText != null)
            {
                string info = $"学习能力: {user.studyAbility}\n";
                info += $"等级: {user.currentLevel}\n";
                info += $"经验: {user.experience}\n";
                info += $"金币: {GetDisplayGold()}";
                
                if (LoginManager.Instance.IsGuest())
                {
                    info += "\n(游客模式)";
                }
                
                userInfoText.text = info;
            }
        }
        else
        {
            if (LoginManager.Instance.IsGuest())
            {
                int guestLevel = PlayerPrefs.GetInt("guest_playerLevel", 1);
                int guestExp = PlayerPrefs.GetInt("guest_experience", 0);
                int guestStudyAbility = PlayerPrefs.GetInt("guest_studyAbility", 1);
                
                if (welcomeText != null)
                {
                    welcomeText.text = "欢迎，游客！";
                }
                
                if (userInfoText != null)
                {
                    int guestGold = PlayerPrefs.GetInt(GuestTotalGoldKey, 0);
                    userInfoText.text = $"学习能力: {guestStudyAbility}\n等级: {guestLevel}\n经验: {guestExp}\n金币: {guestGold}\n(游客模式)";
                }
            }
            else
            {
                if (welcomeText != null)
                {
                    welcomeText.text = "欢迎！";
                }
                
                if (userInfoText != null)
                {
                    userInfoText.text = "未登录";
                }
            }
        }
    }

    int GetDisplayGold()
    {
        if (LoginManager.Instance != null && LoginManager.Instance.IsGuest())
        {
            return PlayerPrefs.GetInt(GuestTotalGoldKey, 0);
        }

        if (AchievementManager.Instance != null)
        {
            return AchievementManager.Instance.GetAccumulatedValue(AchievementType.CollectGold);
        }

        return 0;
    }
    
    void OnStartGameClicked()
    {
        Debug.Log("开始游戏");
        
        if (GameModeManager.Instance != null)
        {
            GameModeManager.Instance.SetNormalMode();
        }
        
        SceneManager.LoadScene(gameSceneName);
    }
    
    void OnReviewClicked()
    {
        Debug.Log("开始复习模式");
        
        if (GameModeManager.Instance != null)
        {
            GameModeManager.Instance.SetReviewMode();
        }
        
        SceneManager.LoadScene(gameSceneName);
    }
    
    void OnAchievementsClicked()
    {
        Debug.Log("查看成就");
        SceneManager.LoadScene(achievementSceneName);
    }
    
    void OnLogoutClicked()
    {
        Debug.Log("退出登录");
        
        if (LoginManager.Instance != null)
        {
            LoginManager.Instance.Logout();
        }
        else
        {
            SceneManager.LoadScene(loginSceneName);
        }
    }
}