/**
 * U51 服务预约
 *
 * Phase 19：此前提交只弹本地 Modal（后端收不到任何记录），属"假成功"。
 * 现接入 POST /service-appointments：来源由服务端强制为 user_self，
 * 前端**不传** requestSource / createdByOperatorId / userId（防伪造运营代登记身份）。
 *
 * 站点上下文：从 U50 服务站页跳转时携带 `?serviceLocationId=`，本页解析后
 * 原样回传，保证预约真正落在该站点；站点名仅作展示，解析失败不阻断提交。
 */
const { serviceAppointmentService } = require('../../services');

const SERVICE_OPTIONS = [
  { label: '到站资料协助', type: 'station_visit' },
  { label: '公益红娘咨询', type: 'matchmaker' },
  { label: '活动报名指导', type: 'station_visit' },
  { label: '婚恋咨询预约', type: 'counselor_consultation' },
];

Page({
  data: {
    services: SERVICE_OPTIONS.map((option) => option.label),
    service: '请选择服务项目',
    date: '',
    note: '',
    serviceLocationId: '',
    serviceLocationName: '',
    submitting: false,
  },
  selectedIndex: -1,
  onLoad(options) {
    const raw = options && options.serviceLocationId;
    const serviceLocationId = raw ? decodeURIComponent(raw).trim() : '';
    if (!serviceLocationId) {
      return;
    }
    this.setData({ serviceLocationId });
    this.resolveStationName(serviceLocationId);
  },
  async resolveStationName(serviceLocationId) {
    const location = await serviceAppointmentService.getCurrentServiceLocation();
    if (location && location.id === serviceLocationId) {
      this.setData({ serviceLocationName: location.name });
    } else {
      // 站点信息不可得时仍保留归属 ID，仅以占位文案展示，避免误导为空
      this.setData({ serviceLocationName: '已选服务站点' });
    }
  },
  chooseService(event) {
    const index = Number(event.detail.value);
    this.selectedIndex = index;
    this.setData({ service: SERVICE_OPTIONS[index].label });
  },
  chooseDate(event) {
    this.setData({ date: event.detail.value });
  },
  onNoteInput(event) {
    this.setData({ note: event.detail.value });
  },
  async submit() {
    if (this.selectedIndex < 0) {
      wx.showToast({ title: '请选择服务项目', icon: 'none' });
      return;
    }
    if (!this.data.date) {
      wx.showToast({ title: '请选择预约日期', icon: 'none' });
      return;
    }
    if (this.data.submitting) {
      return;
    }
    this.setData({ submitting: true });
    try {
      await serviceAppointmentService.createAppointment({
        serviceLocationId: this.data.serviceLocationId || undefined,
        serviceType: SERVICE_OPTIONS[this.selectedIndex].type,
        preferredDate: this.data.date,
        userNote: this.data.note,
      });
      wx.showModal({
        title: '预约已提交',
        content: '工作人员确认后会通过平台通知你。',
        showCancel: false,
        success: () => wx.navigateTo({ url: '/pages/my-appointments/my-appointments' }),
      });
    } catch (error) {
      wx.showToast({ title: '提交失败，请稍后重试', icon: 'none' });
    } finally {
      this.setData({ submitting: false });
    }
  },
});