import { generatePostureReport } from '../../../utils/serve/posture';

const bodyFields = [
  { key: 'heightCm', label: '身高', unit: 'cm' },
  { key: 'weightKg', label: '体重', unit: 'kg' },
  { key: 'waistCm', label: '腰围', unit: 'cm' },
  { key: 'bodyFatPercent', label: '体脂率', unit: '%' },
  { key: 'muscleMassKg', label: '肌肉量', unit: 'kg' },
];

const testFields = [
  { key: 'sprint50mSeconds', label: '50米跑', unit: '秒' },
  { key: 'standingLongJumpCm', label: '立定跳远', unit: 'cm' },
  { key: 'plankSeconds', label: '平板支撑', unit: '秒' },
  { key: 'gripStrengthKg', label: '握力', unit: 'kg' },
  { key: 'ropeSkipCount', label: '一分钟跳绳', unit: '个' },
  { key: 'ropeSkip30SecCount', label: '30秒跳绳', unit: '个' },
  { key: 'vitalCapacityMl', label: '肺活量', unit: 'ml' },
  { key: 'restingHeartRateBpm', label: '静息心率', unit: '次/分' },
  { key: 'stepTestHeartRateBpm', label: '台阶测试恢复心率', unit: '次/分' },
  { key: 'obstacleRun15mSeconds', label: '15米绕障碍跑', unit: '秒' },
  { key: 'quadrantJumpSeconds', label: '十字象限跳', unit: '秒' },
  { key: 'reactionTimeSeconds', label: '选择反应时', unit: '秒' },
  { key: 'balanceBeamSeconds', label: '走平衡木', unit: '秒' },
  { key: 'singleLegStandSeconds', label: '闭眼单脚站立', unit: '秒' },
  { key: 'sitReachCm', label: '坐位体前屈', unit: 'cm' },
];

const allFields = bodyFields.concat(testFields);
const today = () => {
  const date = new Date();
  return `${date.getFullYear()}-${String(date.getMonth() + 1).padStart(2, '0')}-${String(date.getDate()).padStart(2, '0')}`;
};

function normalizeSex(value) {
  const text = String(value || '').toLowerCase();
  if (text === '1' || text === '男' || text === 'male') return 0;
  if (text === '2' || text === '女' || text === 'female') return 1;
  return -1;
}

Page({
  data: {
    studentNo: '',
    studentName: '',
    className: '',
    birthDate: '',
    testDate: today(),
    sexIndex: -1,
    sexOptions: ['男', '女'],
    gradeIndex: -1,
    gradeOptions: ['一年级', '二年级', '三年级', '四年级', '五年级', '六年级', '七年级', '八年级', '九年级', '高一', '高二', '高三'],
    bodyFields,
    testFields,
    values: {},
    submitting: false,
  },

  onLoad(options) {
    const gradeId = Number(decodeURIComponent(options.gradeId || ''));
    this.setData({
      studentNo: decodeURIComponent(options.studentNo || ''),
      studentName: decodeURIComponent(options.studentName || ''),
      className: decodeURIComponent(options.className || ''),
      sexIndex: normalizeSex(decodeURIComponent(options.sex || '')),
      gradeIndex: Number.isInteger(gradeId) && gradeId >= 1 && gradeId <= 12 ? gradeId - 1 : -1,
    });
  },

  onBirthDateChange(e) { this.setData({ birthDate: e.detail.value }); },
  onTestDateChange(e) { this.setData({ testDate: e.detail.value }); },
  onSexChange(e) { this.setData({ sexIndex: Number(e.detail.value) }); },
  onGradeChange(e) { this.setData({ gradeIndex: Number(e.detail.value) }); },

  onNumberInput(e) {
    const key = e.currentTarget.dataset.key;
    this.setData({ [`values.${key}`]: e.detail.value });
  },

  buildPayload() {
    const { studentNo, studentName, className, birthDate, testDate, sexIndex, gradeIndex, values } = this.data;
    if (!studentNo || !studentName || !birthDate || !testDate || sexIndex < 0 || gradeIndex < 0) {
      throw new Error('请补齐出生日期、测试日期、性别和年级');
    }
    if (testDate < birthDate) throw new Error('测试日期不能早于出生日期');

    const numbers = {};
    allFields.forEach(field => {
      const raw = values[field.key];
      if (raw === undefined || String(raw).trim() === '') return;
      const value = Number(raw);
      if (!Number.isFinite(value) || (field.key !== 'sitReachCm' && value <= 0)) {
        throw new Error(`请检查${field.label}的数值`);
      }
      numbers[field.key] = value;
    });
    if (!numbers.heightCm || !numbers.weightKg) throw new Error('请填写身高和体重');

    const tests = {};
    testFields.forEach(field => {
      if (numbers[field.key] !== undefined) tests[field.key] = numbers[field.key];
    });
    return {
      assessmentType: 'student',
      studentName,
      studentId: studentNo,
      birthDate,
      testDate,
      sex: sexIndex === 0 ? 'male' : 'female',
      grade: String(gradeIndex + 1),
      className,
      heightCm: numbers.heightCm,
      weightKg: numbers.weightKg,
      ...(numbers.waistCm !== undefined ? { waistCm: numbers.waistCm } : {}),
      bodyComposition: {
        ...(numbers.bodyFatPercent !== undefined ? { bodyFatPercent: numbers.bodyFatPercent } : {}),
        ...(numbers.muscleMassKg !== undefined ? { muscleMassKg: numbers.muscleMassKg } : {}),
      },
      tests,
    };
  },

  async submit() {
    if (this.data.submitting) return;
    let payload;
    try {
      payload = this.buildPayload();
    } catch (e) {
      wx.showToast({ title: e.message, icon: 'none' });
      return;
    }
    this.setData({ submitting: true });
    wx.showLoading({ title: '生成报告中', mask: true });
    try {
      const response = await generatePostureReport(this.data.studentNo, payload);
      if (!response.data || !response.data.success || !response.data.result) {
        throw new Error('评价服务未返回有效报告');
      }
      wx.hideLoading();
      wx.redirectTo({
        url: '/subpackage/parent/posture-report/posture-report?mode=teacher&studentNo=' + encodeURIComponent(this.data.studentNo),
      });
    } catch (e) {
      wx.hideLoading();
      wx.showModal({ title: '生成失败', content: e.message || '请稍后重试', showCancel: false });
    } finally {
      this.setData({ submitting: false });
    }
  },
});