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

function errMessage(err) {
  if (err && typeof err === 'object') {
    if (err.detail) return String(err.detail);
    if (err.error) return String(err.error);
    if (err.message) return String(err.message);
  }
  return '加载失败，请稍后再试';
}

Page({
  data: {
    greeting: '',
    displayName: '',
    encouragement: '',
    modules: [],
    loading: true,
    error: '',
    skeletonItems: [0, 1, 2, 3, 4, 5, 6, 7, 8]
  },

  onShow() { this.loadHome(); },

  loadHome(silent) {
    if (!silent) {
      this.setData({ loading: true, error: '' });
    }
    return auth.ensureLogin()
      .then((token) => {
        if (!token) {
          // 新用户未绑定手机号，引导去「我的」完成绑定，避免无 token 请求受保护接口导致 401
          this.setData({ loading: false, error: '请先完成微信绑定后再进入' });
          setTimeout(() => wx.switchTab({ url: '/pages/profile/profile' }), 500);
          return;
        }
        return api.request({ url: '/api/v1/pages/home' });
      })
      .then((res) => {
        if (!res) return;
        this.setData({
          loading: false,
          error: '',
          greeting: res.greeting || '',
          displayName: res.display_name || '',
          encouragement: res.encouragement || '',
          modules: (res.modules || []).filter((m) => m.visible)
        });
      })
      .catch((err) => {
        this.setData({ loading: false, error: errMessage(err) });
      });
  },

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

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

  onModuleTap(e) {
    const url = e.currentTarget.dataset.url;
    if (!url) return;
    const token = auth.getToken();
    const sep = url.indexOf('?') >= 0 ? '&' : '?';
    const target = url + sep + 'token=' + encodeURIComponent(token);
    wx.navigateTo({ url: '/pages/webview/webview?url=' + encodeURIComponent(target) });
  }
});