/**
 * 用户数据管理器
 */
import { get, post } from '../utils/http';

export default class UserManager {
  constructor() {
    this.userId = null;
    this.openid = null;
    this.nickname = '';
    this.avatarUrl = '';
    this.isLoggedIn = false;
  }

  /**
   * 初始化用户
   */
  async init() {
    try {
      // 尝试从本地存储恢复用户信息
      const cached = wx.getStorageSync('userInfo');
      if (cached) {
        this.userId = cached.userId;
        this.openid = cached.openid;
        this.nickname = cached.nickname;
        this.avatarUrl = cached.avatarUrl;
        this.isLoggedIn = true;
        return;
      }

      // 获取登录code
      const { code } = await this.wxLogin();
      
      // 调用后端登录接口
      const result = await post('/user/login', { code });
      
      this.userId = result.userId;
      this.openid = result.openid;
      this.nickname = result.nickname || '游客';
      this.avatarUrl = result.avatarUrl || '';
      this.isLoggedIn = true;

      // 缓存用户信息
      wx.setStorageSync('userInfo', {
        userId: this.userId,
        openid: this.openid,
        nickname: this.nickname,
        avatarUrl: this.avatarUrl
      });
    } catch (error) {
      console.error('用户初始化失败:', error);
      // 使用临时身份
      this.userId = 0;
      this.nickname = '游客';
      this.isLoggedIn = false;
    }
  }

  /**
   * 微信登录（带超时）
   */
  wxLogin() {
    return new Promise((resolve, reject) => {
      const timeout = setTimeout(() => {
        reject(new Error('登录超时'));
      }, 3000);

      wx.login({
        success: (res) => {
          clearTimeout(timeout);
          resolve(res);
        },
        fail: (err) => {
          clearTimeout(timeout);
          reject(err);
        }
      });
    });
  }

  /**
   * 获取用户游玩进度
   */
  async getProgress(storyId = null) {
    if (!this.isLoggedIn) return null;
    return await get('/user/progress', { userId: this.userId, storyId });
  }

  /**
   * 保存用户进度
   */
  async saveProgress(storyId, currentNodeKey, isCompleted = false, endingReached = '') {
    if (!this.isLoggedIn) return;
    await post('/user/progress', {
      userId: this.userId,
      storyId,
      currentNodeKey,
      isCompleted,
      endingReached
    });
  }

  /**
   * 点赞故事
   */
  async likeStory(storyId, isLiked) {
    if (!this.isLoggedIn) return;
    await post('/user/like', {
      userId: this.userId,
      storyId,
      isLiked
    });
  }

  /**
   * 收藏故事
   */
  async collectStory(storyId, isCollected) {
    if (!this.isLoggedIn) return;
    await post('/user/collect', {
      userId: this.userId,
      storyId,
      isCollected
    });
  }

  /**
   * 获取收藏列表
   */
  async getCollections() {
    if (!this.isLoggedIn) return [];
    return await get('/user/collections', { userId: this.userId });
  }
}