Page({
  data: {
    realName: '',
    idNumber: '',
    canProceed: false,
    idError: '',
    showConfirm: false
  },
  // 简易中国二代身份证校验：格式+生日+校验位
  isValidChineseID(id) {
    if (!id || typeof id !== 'string') return false;
    const upper = id.trim().toUpperCase();
    if (!/^\d{17}[\dX]$/.test(upper)) return false;
    // 校验生日是否合法
    const y = parseInt(upper.slice(6, 10), 10);
    const m = parseInt(upper.slice(10, 12), 10);
    const d = parseInt(upper.slice(12, 14), 10);
    const date = new Date(y, m - 1, d);
    if (!(date.getFullYear() === y && date.getMonth() + 1 === m && date.getDate() === d)) return false;
    // 校验位
    const weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
    const parity = ['1','0','X','9','8','7','6','5','4','3','2'];
    let sum = 0;
    for (let i = 0; i < 17; i++) {
      sum += parseInt(upper[i], 10) * weights[i];
    }
    const code = parity[sum % 11];
    return code === upper[17];
  },
  onRealNameInput(e) {
    const realName = e.detail.value || '';
    this.setData({ realName }, this.updateProceedState);
  },
  onIdNumberInput(e) {
    // 仅保留数字与X，统一为大写
    const raw = (e.detail.value || '').toString();
    const cleaned = raw.replace(/[^0-9xX]/g, '').toUpperCase();
    const idNumber = cleaned;
    this.setData({ idNumber }, () => {
      // 输入中先不显示错误，但实时控制按钮可用
      this.updateProceedState(false);
    });
  },
  updateProceedState(showError = true) {
    const { realName, idNumber } = this.data;
    const trimmed = (idNumber || '').trim();
    const valid = this.isValidChineseID(trimmed);
    const ok = realName.trim().length > 0 && valid;
    const idError = !trimmed ? '' : (valid ? '' : '身份证格式不正确，请输入18位二代身份证');
    this.setData({ canProceed: ok, idError: showError ? idError : '' });
  },
  onIdBlur() {
    // 失去焦点时显示错误
    this.updateProceedState(true);
  },
  onNext() {
    const { realName, idNumber, canProceed } = this.data;
    if (!realName.trim()) {
      wx.showToast({ title: '请输入真实姓名', icon: 'none' });
      return;
    }
    if (!this.isValidChineseID((idNumber || '').trim())) {
      this.setData({ idError: '身份证格式不正确，请输入18位二代身份证' });
      wx.showToast({ title: '身份证格式不正确', icon: 'none' });
      return;
    }
    if (!canProceed) {
      wx.showToast({ title: '请完善信息', icon: 'none' });
      return;
    }
    // 打开确认弹框
    this.setData({ showConfirm: true });
  },
  onConfirmCancel() {
    this.setData({ showConfirm: false });
  },
  async onConfirmAgree() {
    this.setData({ showConfirm: false });
    wx.navigateTo({ 
      url: `/subpackages/realname/faceid-webview?url=${encodeURIComponent('')}` 
    });
    return;
    //
    try {
      const apiClient = require('../../../utils/api-client.js');
      const response = await apiClient.post('/api/faceid/create', {
        realName: this.data.realName,
        idNumber: this.data.idNumber,
        redirectUrl: encodeURIComponent('/subpackages/realname/faceid-webview')
      });
      
      // 期望后端返回 { code:0, data: { certUrl: 'https://...' } }
      const certUrl = response?.data?.certUrl || response?.certUrl;
      if (certUrl) {
        wx.navigateTo({ 
          url: `/subpackages/realname/faceid-webview?url=${encodeURIComponent(certUrl)}` 
        });
      } else {
        wx.showToast({ 
          title: response?.message || '创建认证会话失败', 
          icon: 'none' 
        });
      }
    } catch (error) {
      console.error('创建FaceID会话失败:', error);
      wx.showToast({ 
        title: error?.message || '网络异常，请稍后重试', 
        icon: 'none' 
      });
    }
  }
});