// pages/login/login.js
const app = getApp();
const api = require('../../utils/api');

Page({
  data: {
    role: 'parent', // parent 或 child
    loading: false
  },

  onLoad() {
    // 检查是否已登录
    if (app.globalData.token) {
      this.redirectByRole();
    }
  },

  // 选择角色
  onRoleSelect(e) {
    this.setData({ role: e.currentTarget.dataset.role });
  },

  // 微信登录
  async onWechatLogin() {
    if (this.data.loading) return;
    
    this.setData({ loading: true });
    
    try {
      // 获取微信登录code
      const loginRes = await new Promise((resolve, reject) => {
        wx.login({
          success: resolve,
          fail: reject
        });
      });

      // 调用后端登录接口
      const result = await api.login({
        code: loginRes.code,
        role: this.data.role
      });

      // 保存登录信息
      app.globalData.token = result.token;
      app.globalData.role = result.role;
      wx.setStorageSync('token', result.token);
      wx.setStorageSync('role', result.role);

      wx.showToast({
        title: '登录成功',
        icon: 'success'
      });

      // 跳转到对应首页
      setTimeout(() => {
        this.redirectByRole();
      }, 1000);

    } catch (err) {
      console.error('登录失败:', err);
      wx.showToast({
        title: '登录失败',
        icon: 'none'
      });
    } finally {
      this.setData({ loading: false });
    }
  },

  // 根据角色跳转
  redirectByRole() {
    if (this.data.role === 'parent') {
      wx.switchTab({ url: '/pages/parent-home/parent-home' });
    } else {
      wx.switchTab({ url: '/pages/child-home/child-home' });
    }
  }
})