const api = require('../../utils/api');
const auth = require('../../utils/auth');

const ROLE_LABELS = {
  student: '学员',
  member: '成员',
  teacher: '老师',
  leader: '组长',
  'group_leader': '组长',
  admin: '管理员'
};
const LOGIN_TYPE_LABELS = {
  wechat: '微信',
  phone: '手机号',
  admin: '管理员'
};

Page({
  data: {
    view: 'loading',
    profile: null,
    phoneLoading: false,
    phoneError: '',
    loadError: '',
    avatarSrc: '',
    avatarFallback: '明',
    roleLabel: '',
    loginTypeLabel: '',
    classGroups: [],
    avatarUploading: false
  },

  onShow() {
    this.setData({ phoneError: '' });
    this.loadPage();
  },

  onPullDownRefresh() {
    this.refresh().then(() => wx.stopPullDownRefresh());
  },

  refresh() {
    if (this.data.view !== 'profile') {
      return this.loadPage();
    }
    return new Promise((resolve) => {
      api.request({ url: '/api/v1/profile' })
        .then((res) => {
          this.applyProfile(res);
          resolve();
        })
        .catch(() => {
          wx.showToast({ title: '刷新失败', icon: 'none' });
          resolve();
        });
    });
  },

  loadPage() {
    this.setData({ loadError: '' });
    return auth.ensureLogin()
      .then((token) => {
        if (!token) {
          this.showPhoneLogin();
          return null;
        }
        this.setData({ view: 'loading' });
        return this.loadProfile();
      })
      .catch(() => {
        this.showPhoneLogin();
      });
  },

  loadProfile() {
    return api.request({ url: '/api/v1/profile' })
      .then((res) => {
        this.applyProfile(res);
      })
      .catch((err) => {
        if (!auth.getToken()) {
          this.showPhoneLogin();
        } else {
          this.setData({
            view: 'loadError',
            loadError: (err && err.error) || '加载失败'
          });
        }
      });
  },

  applyProfile(res) {
    const displayName = res.display_name || res.name || '';
    const classGroups = (res.class_groups || []).map((g) => ({
      class_id: g.class_id,
      class_code: g.class_code,
      period: g.period,
      group: g.group,
      role: this.roleLabel(g.role)
    }));
    this.setData({
      view: 'profile',
      profile: res,
      phoneError: '',
      loadError: '',
      avatarSrc: this.fullUrl(res.wechat_avatar),
      avatarFallback: this.firstChar(displayName),
      roleLabel: this.roleLabel(res.role),
      loginTypeLabel: this.loginTypeLabel(res.login_type),
      classGroups
    });
  },

  showPhoneLogin() {
    this.setData({
      view: 'phoneLogin',
      phoneLoading: false
    });
  },

  roleLabel(role) {
    return ROLE_LABELS[role] || role || '学员';
  },

  loginTypeLabel(type) {
    return LOGIN_TYPE_LABELS[type] || type || '微信';
  },

  fullUrl(rel) {
    if (!rel) return '';
    return /^https?:\/\//i.test(rel) ? rel : api.STATIC_BASE_URL + rel;
  },

  firstChar(str) {
    const t = (str && typeof str === 'string') ? str.trim() : '';
    return t ? t.charAt(0) : '明';
  },

  onChooseAvatar(e) {
    const path = e.detail && e.detail.avatarUrl;
    console.log('[avatar] chooseAvatar ->', path);
    if (!path) {
      wx.showToast({ title: '未选择头像', icon: 'none' });
      return;
    }
    this.setData({ avatarUploading: true });
    wx.uploadFile({
      url: api.BASE_URL + '/api/v1/profile/avatar',
      filePath: path,
      name: 'file',
      header: { Authorization: 'Bearer ' + auth.getToken() },
      success: (res) => {
        console.log('[avatar] upload success', res.statusCode, res.data);
        let data = {};
        try {
          data = JSON.parse(res.data);
        } catch (e) {
          data = {};
        }
        if (data.success && data.wechat_avatar) {
          const newAvatar = data.wechat_avatar;
          const newUrl = this.fullUrl(newAvatar);
          this.setData({
            'profile.wechat_avatar': newAvatar,
            avatarSrc: newUrl
          });
          wx.showToast({ title: '头像已更新', icon: 'success' });
        } else {
          wx.showToast({ title: data.error || '上传失败', icon: 'none' });
        }
      },
      fail: (err) => {
        console.error('[avatar] upload fail', err);
        console.error('[avatar] filePath', path);
        wx.showToast({ title: '上传失败', icon: 'none' });
      },
      complete: () => {
        this.setData({ avatarUploading: false });
      }
    });
  },

  onGetPhoneNumber(e) {
    if (this.data.phoneLoading) {
      return;
    }
    const phoneCode = e.detail && e.detail.code;
    if (!phoneCode) {
      const message = '未授权手机号，请点击上方按钮重试';
      this.setData({ phoneError: message });
      wx.showToast({ title: message, icon: 'none' });
      return;
    }
    this.setData({ phoneLoading: true, phoneError: '' });
    auth.loginWithPhone(phoneCode)
      .then(() => this.loadProfile())
      .catch((err) => {
        const message = (err && err.error) || '手机号登录失败';
        this.setData({ phoneLoading: false, phoneError: message });
        wx.showToast({ title: message, icon: 'none', duration: 2500 });
      });
  },

  onRetry() {
    this.loadPage();
  },

  logout() {
    wx.showModal({
      title: '退出登录',
      content: '确定要退出当前账号吗？',
      confirmText: '退出',
      confirmColor: '#c0392b',
      success: (res) => {
        if (!res.confirm) {
          return;
        }
        api.request({ url: '/api/v1/auth/logout', method: 'POST' }).catch(() => {});
        auth.clearToken();
        wx.reLaunch({ url: '/pages/home/home' });
      }
    });
  }
});