const app = getApp();
const svc = require('../../services/exercise');

Page({
  data: {
    statusBarHeight: 20,
    collections: [],
    counts: {},
    loading: true
  },

  onLoad() {
    this.setData({ statusBarHeight: app.globalData.statusBarHeight || 20 });
    this.load();
  },

  load() {
    this.setData({ loading: true });
    svc.listCollections().then((list) => {
      const collections = list || [];
      this.setData({ collections, loading: false });
      // 异步获取每个训练组合的动作数量
      collections.forEach(c => {
        svc.getCollectionExercises(c.slug, { pageSize: 1 }).then((res) => {
          const key = 'counts.' + c.slug;
          this.setData({ [key]: (res && res.total) || 0 });
        }).catch(() => {});
      });
    }).catch(() => {
      this.setData({ loading: false });
    });
  },

  onOpen(e) {
    wx.navigateTo({
      url: '/pages/collection-detail/collection-detail?slug=' +
        encodeURIComponent(e.currentTarget.dataset.slug)
    });
  }
});