/**
 * 婚恋态度页 U10（Phase 04 P04-T25）
 *
 * 重构要点（遵循 AGENTS.md 不变量）：
 *   - 数据：profileService.getProfile + userStore.updateProfile（第 9 条）
 *   - V1 不做泛交友选项（功能清单 §4.5：默认"寻找以婚姻为目标的稳定关系"）
 *   - 草稿恢复：onLoad 读 ONBOARDING_DRAFT.intent，保存前写回
 *   - 下一步：跳 profile-intro
 */
const { userStore, appStore } = require('../../stores');
const { profileService } = require('../../services');
const { ROUTE, STORAGE_KEYS } = require('../../constants');

const MARRIAGE_PLAN_OPTIONS = [
  { value: 'half_year', label: '半年内' },
  { value: 'one_year', label: '1年内' },
  { value: 'one_to_two_years', label: '1～2年' },
  { value: 'two_years_plus', label: '2年以上' },
  { value: 'let_it_be', label: '顺其自然' },
];

const ACTIVITY_WILLINGNESS_OPTIONS = [
  { value: 'willing', label: '愿意' },
  { value: 'not_now', label: '暂不考虑' },
];

const MATCHMAKER_WILLINGNESS_OPTIONS = [
  { value: 'accept', label: '接受' },
  { value: 'not_now', label: '暂不接受' },
];

const DEFAULT_GOAL = '寻找以婚姻为目标的稳定关系';

Page({
  data: {
    statusBarHeight: 20,
    navBarHeight: 44,
    loading: false,
    saving: false,
    relationshipGoal: DEFAULT_GOAL,
    marriagePlan: '',
    activityWillingness: '',
    matchmakerWillingness: '',
    // 选项
    marriagePlanOptions: MARRIAGE_PLAN_OPTIONS,
    activityWillingnessOptions: ACTIVITY_WILLINGNESS_OPTIONS,
    matchmakerWillingnessOptions: MATCHMAKER_WILLINGNESS_OPTIONS,
    marriagePlanIndex: -1,
    activityWillingnessIndex: -1,
    matchmakerWillingnessIndex: -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 */ }
  },

  async loadProfile() {
    this.setData({ loading: true });
    try {
      const profile = await profileService.getProfile();
      this._mergeProfile(profile);
    } catch (err) { /* 首次填写 */ } finally {
      this.setData({ loading: false });
    }
  },

  _mergeProfile(profile) {
    if (!profile) return;
    const d = this._readDraft();
    const relationshipGoal = d.relationshipGoal || profile.relationshipGoal || DEFAULT_GOAL;
    const marriagePlan = d.marriagePlan || profile.marriagePlan || '';
    const activityWillingness = d.activityWillingness || profile.activityWillingness || '';
    const matchmakerWillingness = d.matchmakerWillingness || profile.matchmakerWillingness || '';
    this.setData({
      relationshipGoal,
      marriagePlan,
      activityWillingness,
      matchmakerWillingness,
      marriagePlanIndex: MARRIAGE_PLAN_OPTIONS.findIndex((o) => o.value === marriagePlan),
      activityWillingnessIndex: ACTIVITY_WILLINGNESS_OPTIONS.findIndex((o) => o.value === activityWillingness),
      matchmakerWillingnessIndex: MATCHMAKER_WILLINGNESS_OPTIONS.findIndex((o) => o.value === matchmakerWillingness),
    });
  },

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

  _applyDraft() {
    const d = this._readDraft();
    if (!d || Object.keys(d).length === 0) return;
    const marriagePlan = d.marriagePlan || '';
    const activityWillingness = d.activityWillingness || '';
    const matchmakerWillingness = d.matchmakerWillingness || '';
    this.setData({
      relationshipGoal: d.relationshipGoal || DEFAULT_GOAL,
      marriagePlan,
      activityWillingness,
      matchmakerWillingness,
      marriagePlanIndex: MARRIAGE_PLAN_OPTIONS.findIndex((o) => o.value === marriagePlan),
      activityWillingnessIndex: ACTIVITY_WILLINGNESS_OPTIONS.findIndex((o) => o.value === activityWillingness),
      matchmakerWillingnessIndex: MATCHMAKER_WILLINGNESS_OPTIONS.findIndex((o) => o.value === matchmakerWillingness),
    });
  },

  _writeDraft() {
    try {
      const draft = wx.getStorageSync(STORAGE_KEYS.ONBOARDING_DRAFT) || {};
      draft.intent = {
        relationshipGoal: this.data.relationshipGoal,
        marriagePlan: this.data.marriagePlan,
        activityWillingness: this.data.activityWillingness,
        matchmakerWillingness: this.data.matchmakerWillingness,
      };
      draft.currentStep = 'intent';
      wx.setStorageSync(STORAGE_KEYS.ONBOARDING_DRAFT, draft);
    } catch (e) { /* ignore */ }
  },

  // ============ 表单交互 ============
  onGoalInput(e) {
    this.setData({ relationshipGoal: e.detail.value });
  },

  onMarriagePlanChange(e) {
    const idx = Number(e.detail.value);
    this.setData({ marriagePlanIndex: idx, marriagePlan: MARRIAGE_PLAN_OPTIONS[idx].value });
  },

  onActivityWillingnessChange(e) {
    const idx = Number(e.detail.value);
    this.setData({ activityWillingnessIndex: idx, activityWillingness: ACTIVITY_WILLINGNESS_OPTIONS[idx].value });
  },

  onMatchmakerWillingnessChange(e) {
    const idx = Number(e.detail.value);
    this.setData({ matchmakerWillingnessIndex: idx, matchmakerWillingness: MATCHMAKER_WILLINGNESS_OPTIONS[idx].value });
  },

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

  async onNext() {
    if (this.data.saving) return;
    const { relationshipGoal, marriagePlan, activityWillingness, matchmakerWillingness } = this.data;
    if (!marriagePlan) return appStore.toast('请选择希望多久进入婚姻');
    if (!activityWillingness) return appStore.toast('请选择是否参加公益活动');
    if (!matchmakerWillingness) return appStore.toast('请选择是否接受红娘推荐');

    this.setData({ saving: true });
    this._writeDraft();
    try {
      await userStore.updateProfile({
        relationshipGoal,
        marriagePlan,
        activityWillingness,
        matchmakerWillingness,
      });
      this.setData({ saving: false });
      wx.navigateTo({ url: ROUTE.ONBOARDING.PROFILE_INTRO });
    } catch (err) {
      this.setData({ saving: false });
      appStore.toastError(err, '保存失败');
    }
  },
});