// subpackage/teacher/student-fitness-detail/student-fitness-detail.js
import uCharts from '../../../utils/chart/u-charts';
import { getReport } from '../../../utils/serve/parent';

var uChartsInstance = {};

const UNIT_MAP = {
  'BMI': 'kg/m²',
  '肺活量': 'ml',
  '坐位体前屈': 'cm',
  '立定跳远': 'cm',
  '一分钟跳绳': '个',
  '一分钟仰卧起坐': '个',
};

Page({
  data: {
    fitnessItems: [],
    fitnessReport: [],
    radarCWidth: 300,
    radarCHeight: 300,
    pixelRatio: 2,
    showFitnessPopup: false,
    selectedFitnessItem: null,
    studentNo: '',
    readyFired: false,
  },

  async onLoad(options) {
    wx.showLoading({ title: '加载中' });
    this.setData({ studentNo: options.studentNo || '' });
    try {
      const res = await getReport({ studentNo: options.studentNo });
      const rawList = (res.data && res.data.categoryScoreList) || [];
      const list = rawList.filter(item => !(item.name && item.name.includes('米') && item.name.includes('跑')));

      // 雷达图根据 gradeId 过滤不适用的项目
      const gradeId = list.length > 0 ? list[0].gradeId : null;
      let radarList = list;
      if (gradeId !== null && gradeId !== undefined) {
        if (gradeId <= 2) {
          radarList = list.filter(item => item.name !== '一分钟仰卧起坐' && item.name !== '立定跳远');
        } else if (gradeId > 2 && gradeId <= 6) {
          radarList = list.filter(item => item.name !== '立定跳远');
        } else if (gradeId > 6) {
          radarList = list.filter(item => item.name !== '一分钟跳绳');
        }
      }

      const fitnessItems = list.map(item => ({
        ...item,
        unit: UNIT_MAP[item.name] || '',
      }));
      this.setData({
        fitnessReport: radarList,
        fitnessItems,
      }, () => {
        // 如果 onReady 已经触发，数据到位后立即绘图
        if (this.data.readyFired) {
          this.drawRadarChart(this);
        }
      });
    } catch (e) {
      this.setData({ fitnessItems: [] });
    }
    wx.hideLoading();
  },

  onReady() {
    const info = wx.getWindowInfo();
    const pixelRatio = info.pixelRatio;
    const rpxRatio = info.windowWidth / 750;
    const radarCWidth = Math.floor(info.windowWidth - 2 * 30 * rpxRatio);
    const radarCHeight = Math.floor(radarCWidth * 1.05);
    this.setData({ radarCWidth, radarCHeight, pixelRatio, readyFired: true }, () => {
      // 如果数据已经加载完，直接绘图；否则等 onLoad 回调里触发
      if (this.data.fitnessReport && this.data.fitnessReport.length > 0) {
        this.drawRadarChart(this);
      }
    });
  },

  drawRadarChart(that) {
    const list = that.data.fitnessReport || [];
    // 长文本自动换行（超过5字在中间插入换行）
    const categories = list.map(i => {
      const name = i.name || '';
      if (name.length > 5) {
        const mid = Math.ceil(name.length / 2);
        return name.slice(0, mid) + '\n' + name.slice(mid);
      }
      return name;
    });
    const prevData = list.map(i => i.prevScore || 0);
    const currentData = list.map(i => i.lastScore || 0);
    // 本次成绩数据标签：显示分数 + 等级
    const currentDataLabels = list.map(i => {
      const score = i.lastScore != null ? i.lastScore : '';
      const rank = i.rank != null ? i.rank : '';
      return rank ? score + '\n' + rank : String(score);
    });

    const query = wx.createSelectorQuery().in(that);
    query.select('#radarCanvas').fields({ node: true, size: true }).exec(res => {
      if (!res[0]) return;
      const canvas = res[0].node;
      const ctx = canvas.getContext('2d');
      canvas.width = (res[0].width + 20) * that.data.pixelRatio;
      canvas.height = (res[0].height + 20) * that.data.pixelRatio;
      uChartsInstance['radarCanvas'] = new uCharts({
        type: 'radar',
        context: ctx,
        width: that.data.radarCWidth * that.data.pixelRatio,
        height: that.data.radarCHeight * that.data.pixelRatio,
        categories,
        series: [
          { name: '上次成绩', data: prevData, color: '#4A90E2', dataLabel: false },
          { name: '本次成绩', data: currentData, color: '#E74C3C', dataLabels: currentDataLabels, textColor: '#E74C3C', textSize: 11 },
        ],
        pixelRatio: that.data.pixelRatio,
        animation: true,
        tapLegend: true,
        background: 'rgba(0,0,0,0)',
        color: ['#4A90E2', '#E74C3C'],
        padding: [0, 0, 0, 15],
        legend: {
          show: true,
          position: 'bottom',
          float: 'center',
          fontSize: 12,
          lineHeight: 11,
          margin: 0,
          itemGap: 20,
        },
        extra: {
          radar: {
            gridType: that.data.fitnessReport.length === 4 ? 'circle' : 'radar',
            gridColor: '#CCCCCC',
            gridCount: 4,
            opacity: 0.15,
            gridEvenShow: true,
            gridOddShow: true,
            labelShow: true,
            labelColor: '#333',
            fontSize: 13,
            labelMargin: 30,
            labelPointShow: false,
            max: 100,
          },
        },
      });
    });
  },

  showFitnessScore(e) {
    const item = e.currentTarget.dataset.item;
    this.setData({ selectedFitnessItem: item, showFitnessPopup: true });
  },

  closeFitnessPopup() {
    this.setData({ showFitnessPopup: false, selectedFitnessItem: null });
  },

  goFitnessDetail() {
    const item = this.data.selectedFitnessItem;
    if (!item) return;
    this.setData({ showFitnessPopup: false });
    wx.setStorageSync('fitnessDetailItem', item);
    wx.navigateTo({
      url: '/subpackage/parent/fitness-detail/fitness-detail',
    });
  },

  onShow() {},
  onHide() {},
  onUnload() {},
  onPullDownRefresh() {},
  onReachBottom() {},
  onShareAppMessage() {},
})