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

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

  /**
   * 检查是否已登录（只检查本地缓存）
   * @returns {boolean} 是否已登录
   */
  checkLogin() {
    const cached = wx.getStorageSync('userInfo');
    if (cached && cached.userId && cached.token) {
      this.userId = cached.userId;
      this.openid = cached.openid;
      this.nickname = cached.nickname || '游客';
      this.avatarUrl = cached.avatarUrl || '';
      this.token = cached.token;
      this.isLoggedIn = true;
      return true;
    }
    return false;
  }

  /**
   * 初始化用户（只恢复缓存，不自动登录）
   */
  async init() {
    // 只检查本地缓存，不自动登录
    this.checkLogin();
  }

  /**
   * 执行登录（供登录按钮调用）
   * @param {Object} userInfo - 微信用户信息（头像、昵称等），可选
   */
  async doLogin(userInfo = null) {
    try {
      // 获取登录code
      const { code } = await this.wxLogin();
      
      // 调用后端登录接口，传入用户信息
      const result = await post('/user/login', { 
        code,
        userInfo: userInfo ? {
          nickname: userInfo.nickName,
          avatarUrl: userInfo.avatarUrl,
          gender: userInfo.gender || 0
        } : null
      });
      
      this.userId = result.userId;
      this.openid = result.openid;
      // 优先使用后端返回的，其次用授权获取的
      this.nickname = result.nickname || (userInfo?.nickName) || '游客';
      this.avatarUrl = result.avatarUrl || (userInfo?.avatarUrl) || '';
      this.token = result.token || '';
      this.isLoggedIn = true;

      // 缓存用户信息（包含 token）
      wx.setStorageSync('userInfo', {
        userId: this.userId,
        openid: this.openid,
        nickname: this.nickname,
        avatarUrl: this.avatarUrl,
        token: this.token
      });

      return {
        userId: this.userId,
        nickname: this.nickname,
        avatarUrl: this.avatarUrl
      };
    } catch (error) {
      console.error('登录失败:', error);
      throw error;
    }
  }

  /**
   * 退出登录
   */
  logout() {
    this.userId = null;
    this.openid = null;
    this.nickname = '';
    this.avatarUrl = '';
    this.token = '';
    this.isLoggedIn = false;
    wx.removeStorageSync('userInfo');
  }

  /**
   * 更新用户资料
   */
  async updateProfile(nickname, avatarUrl) {
    if (!this.isLoggedIn) return false;
    try {
      await post('/user/profile', {
        nickname,
        avatarUrl,
        gender: 0
      }, { params: { userId: this.userId } });
      
      // 更新本地数据
      this.nickname = nickname;
      this.avatarUrl = avatarUrl;
      
      // 更新缓存（保留 token）
      wx.setStorageSync('userInfo', {
        userId: this.userId,
        openid: this.openid,
        nickname: this.nickname,
        avatarUrl: this.avatarUrl,
        token: this.token
      });
      
      return true;
    } catch (e) {
      console.error('更新资料失败:', e);
      return false;
    }
  }

  /**
   * 微信登录（带超时）
   */
  wxLogin() {
    return new Promise((resolve, reject) => {
      const timeout = setTimeout(() => {
        reject(new Error('登录超时'));
      }, 5000);

      wx.login({
        success: (res) => {
          clearTimeout(timeout);
          if (res.code) {
            resolve(res);
          } else {
            reject(new Error('获取code失败'));
          }
        },
        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 });
  }

  /**
   * 获取最近游玩的故事
   */
  async getRecentPlayed() {
    if (!this.isLoggedIn) return [];
    try {
      return await get('/user/recent-played', { userId: this.userId, limit: 10 });
    } catch (e) {
      return [];
    }
  }

  /**
   * 获取AI创作历史
   */
  async getAIHistory() {
    if (!this.isLoggedIn) return [];
    try {
      return await get('/user/ai-history', { userId: this.userId, limit: 20 });
    } catch (e) {
      return [];
    }
  }

  /**
   * 获取AI配额
   */
  async getAIQuota() {
    if (!this.isLoggedIn) return { daily: 3, used: 0, purchased: 0 };
    try {
      return await get('/user/ai-quota', { userId: this.userId });
    } catch (e) {
      return { daily: 3, used: 0, purchased: 0 };
    }
  }

  /**
   * 获取我的作品
   */
  async getMyWorks() {
    if (!this.isLoggedIn) return [];
    try {
      return await get('/user/my-works', { userId: this.userId });
    } catch (e) {
      return [];
    }
  }

  /**
   * 获取草稿箱
   */
  async getDrafts() {
    if (!this.isLoggedIn) return [];
    try {
      return await get('/user/drafts', { userId: this.userId });
    } catch (e) {
      return [];
    }
  }

  // ========== 游玩记录相关 ==========

  /**
   * 保存游玩记录
   */
  async savePlayRecord(storyId, endingName, endingType, pathHistory) {
    if (!this.isLoggedIn) return null;
    try {
      return await post('/user/play-record', {
        userId: this.userId,
        storyId,
        endingName,
        endingType: endingType || '',
        pathHistory: pathHistory || []
      });
    } catch (e) {
      console.error('保存游玩记录失败:', e);
      return null;
    }
  }

  /**
   * 获取游玩记录列表
   * @param {number} storyId - 可选，指定故事ID获取该故事的所有记录
   */
  async getPlayRecords(storyId = null) {
    if (!this.isLoggedIn) return [];
    try {
      const params = { userId: this.userId };
      if (storyId) params.storyId = storyId;
      return await get('/user/play-records', params);
    } catch (e) {
      console.error('获取游玩记录失败:', e);
      return [];
    }
  }

  /**
   * 获取单条记录详情
   */
  async getPlayRecordDetail(recordId) {
    if (!this.isLoggedIn) return null;
    try {
      return await get(`/user/play-records/${recordId}`);
    } catch (e) {
      console.error('获取记录详情失败:', e);
      return null;
    }
  }

  // 删除游玩记录
  async deletePlayRecord(recordId) {
    if (!this.isLoggedIn) return false;
    try {
      await del(`/user/play-records/${recordId}`);
      return true;
    } catch (e) {
      console.error('删除记录失败:', e);
      return false;
    }
  }
}