/**
 * 基础资料页 U06（Phase 04 P04-T21）
 *
 * 重构要点（遵循 AGENTS.md 不变量）：
 *   - 数据：profileService.getProfile + userStore.updateProfile，不再直连 api（第 9 条）
 *   - 性别/出生日期：由身份证自动生成，只读展示（第 8 条：本地不长期保存身份证/完整生日）
 *   - 草稿恢复：onLoad 读 ONBOARDING_DRAFT.basic，保存前写回（验收条件"Draft退出后可恢复"）
 *   - 数量限制：本页无数值型限制字段，选项列表遵循 §4.1 配置
 *   - 下一步：跳 profile-lifestyle
 */
const { userStore, appStore } = require('../../stores');
const { profileService } = require('../../services');
const { ROUTE, STORAGE_KEYS } = require('../../constants');

const MARITAL_OPTIONS = [
  { value: 'never_married', label: '未婚' },
  { value: 'divorced', label: '离异' },
  { value: 'widowed', label: '丧偶' },
];

const CHILDREN_OPTIONS = [
  { value: 'none', label: '无子女' },
  { value: 'has', label: '有子女' },
];

const EDUCATION_OPTIONS = [
  { value: 'high_school', label: '高中/中专' },
  { value: 'college', label: '大专' },
  { value: 'bachelor', label: '本科' },
  { value: 'master', label: '硕士' },
  { value: 'phd', label: '博士' },
];

const OCCUPATION_OPTIONS = [
  { value: 'government', label: '机关事业单位' },
  { value: 'education', label: '教育' },
  { value: 'medical', label: '医疗' },
  { value: 'enterprise', label: '企业职员' },
  { value: 'technical', label: '技术人员' },
  { value: 'self_employed', label: '个体经营' },
  { value: 'freelance', label: '自由职业' },
  { value: 'service', label: '服务行业' },
  { value: 'agriculture', label: '农业' },
  { value: 'other', label: '其他' },
];

const REGION_OPTIONS = ['丹阳', '镇江市区', '镇江其他辖区', '南京'];

Page({
  data: {
    statusBarHeight: 20,
    navBarHeight: 44,
    loading: false,
    saving: false,
    // 身份证自动生成（只读）
    gender: '',
    genderLabel: '',
    ageText: '',
    // 用户填写
    regionName: '',
    heightCm: '',
    maritalStatus: '',
    hasChildren: '',
    educationCode: '',
    occupationCode: '',
    // 选项
    maritalOptions: MARITAL_OPTIONS,
    childrenOptions: CHILDREN_OPTIONS,
    educationOptions: EDUCATION_OPTIONS,
    occupationOptions: OCCUPATION_OPTIONS,
    regionOptions: REGION_OPTIONS,
    regionIndex: -1,
    maritalIndex: -1,
    childrenIndex: -1,
    educationIndex: -1,
    occupationIndex: -1,
  },

  onLoad() {
    this._initSystemInfo();
    this._applyDraft();
    this.loadProfile();
  },

  _initSystemInfo() {
    try {
      const sysInfo = wx.getSystemInfoSync();
      this.setData({
        statusBarHeight: sysInfo.statusBarHeight || 20,
        navBarHeight: 44,
      });
    } catch (e) { /* 使用默认值 */ }
  },

  /** 从服务端拉取已有资料（合并草稿） */
  async loadProfile() {
    this.setData({ loading: true });
    try {
      const profile = await profileService.getProfile();
      this._mergeProfile(profile);
    } catch (err) {
      // 首次填写时无资料，使用草稿默认值
    } finally {
      this.setData({ loading: false });
    }
  },

  /** 合并服务端资料到表单（草稿优先，草稿未填则用服务端值） */
  _mergeProfile(profile) {
    if (!profile) return;
    const draft = this._readDraft();
    const regionName = draft.regionName || profile.regionName || '';
    const maritalStatus = draft.maritalStatus || profile.maritalStatus || '';
    const hasChildren = draft.hasChildren || (profile.hasChildren !== undefined ? (profile.hasChildren ? 'has' : 'none') : '');
    const educationCode = draft.educationCode || profile.educationCode || '';
    const occupationCode = draft.occupationCode || profile.occupationCode || '';
    const heightCm = draft.heightCm || profile.heightCm || '';

    this.setData({
      gender: profile.gender || draft.gender || '',
      genderLabel: profile.gender === 'male' ? '男' : (profile.gender === 'female' ? '女' : ''),
      ageText: profile.age ? `${profile.age}岁` : '',
      regionName,
      heightCm,
      maritalStatus,
      hasChildren,
      educationCode,
      occupationCode,
      regionIndex: REGION_OPTIONS.indexOf(regionName),
      maritalIndex: MARITAL_OPTIONS.findIndex((o) => o.value === maritalStatus),
      childrenIndex: CHILDREN_OPTIONS.findIndex((o) => o.value === hasChildren),
      educationIndex: EDUCATION_OPTIONS.findIndex((o) => o.value === educationCode),
      occupationIndex: OCCUPATION_OPTIONS.findIndex((o) => o.value === occupationCode),
    });
  },

  // ============ 草稿 ============
  _readDraft() {
    try {
      const draft = wx.getStorageSync(STORAGE_KEYS.ONBOARDING_DRAFT) || {};
      return draft.basic || {};
    } catch (e) {
      return {};
    }
  },

  /** 把草稿值填入表单（loadProfile 失败时也能恢复） */
  _applyDraft() {
    const d = this._readDraft();
    if (!d || Object.keys(d).length === 0) return;
    this.setData({
      regionName: d.regionName || '',
      heightCm: d.heightCm || '',
      maritalStatus: d.maritalStatus || '',
      hasChildren: d.hasChildren || '',
      educationCode: d.educationCode || '',
      occupationCode: d.occupationCode || '',
      regionIndex: REGION_OPTIONS.indexOf(d.regionName || ''),
      maritalIndex: MARITAL_OPTIONS.findIndex((o) => o.value === (d.maritalStatus || '')),
      childrenIndex: CHILDREN_OPTIONS.findIndex((o) => o.value === (d.hasChildren || '')),
      educationIndex: EDUCATION_OPTIONS.findIndex((o) => o.value === (d.educationCode || '')),
      occupationIndex: OCCUPATION_OPTIONS.findIndex((o) => o.value === (d.occupationCode || '')),
    });
  },

  _writeDraft() {
    try {
      const draft = wx.getStorageSync(STORAGE_KEYS.ONBOARDING_DRAFT) || {};
      draft.basic = {
        regionName: this.data.regionName,
        heightCm: this.data.heightCm,
        maritalStatus: this.data.maritalStatus,
        hasChildren: this.data.hasChildren,
        educationCode: this.data.educationCode,
        occupationCode: this.data.occupationCode,
      };
      draft.currentStep = 'basic';
      wx.setStorageSync(STORAGE_KEYS.ONBOARDING_DRAFT, draft);
    } catch (e) { /* ignore */ }
  },

  // ============ 表单交互 ============
  onRegionChange(e) {
    const idx = Number(e.detail.value);
    this.setData({ regionIndex: idx, regionName: REGION_OPTIONS[idx] });
  },

  onHeightInput(e) {
    this.setData({ heightCm: e.detail.value });
  },

  onMaritalChange(e) {
    const idx = Number(e.detail.value);
    this.setData({ maritalIndex: idx, maritalStatus: MARITAL_OPTIONS[idx].value });
  },

  onChildrenChange(e) {
    const idx = Number(e.detail.value);
    this.setData({ childrenIndex: idx, hasChildren: CHILDREN_OPTIONS[idx].value });
  },

  onEducationChange(e) {
    const idx = Number(e.detail.value);
    this.setData({ educationIndex: idx, educationCode: EDUCATION_OPTIONS[idx].value });
  },

  onOccupationChange(e) {
    const idx = Number(e.detail.value);
    this.setData({ occupationIndex: idx, occupationCode: OCCUPATION_OPTIONS[idx].value });
  },

  // ============ 导航 ============
  onBack() {
    this._writeDraft();
    wx.navigateBack();
  },

  /** 下一步：校验必填 → 保存草稿 → 提交服务端 → 跳 profile-lifestyle */
  async onNext() {
    if (this.data.saving) return;
    const { regionName, heightCm, maritalStatus, hasChildren, educationCode, occupationCode } = this.data;
    if (!regionName) return appStore.toast('请选择居住区域');
    if (!heightCm) return appStore.toast('请填写身高');
    if (!maritalStatus) return appStore.toast('请选择婚姻状况');
    if (!hasChildren) return appStore.toast('请选择子女情况');
    if (!educationCode) return appStore.toast('请选择学历');
    if (!occupationCode) return appStore.toast('请选择职业类型');

    this.setData({ saving: true });
    this._writeDraft();
    try {
      await userStore.updateProfile({
        regionName,
        heightCm: Number(heightCm),
        maritalStatus,
        hasChildren: hasChildren === 'has',
        educationCode,
        occupationCode,
      });
      this.setData({ saving: false });
      wx.navigateTo({ url: ROUTE.ONBOARDING.PROFILE_LIFESTYLE });
    } catch (err) {
      this.setData({ saving: false });
      appStore.toastError(err, '保存失败');
    }
  },
});