memind/miniapp/pages/login/index.js

const {
  checkAuth,
  loginWithPassword,
  loginWithWechatCode,
  isTouristMode,
  getApiBaseUrl,
  getStoredSession
} = require('../../utils/api');
const { MINIAPP_LOGIN_PATH } = require('../../utils/config');
const {
  saveLegalConsent,
  shouldSkipLoginConsent
} = require('../../utils/legal-consent');

function hasStoredSessionCookie() {
  const session = getStoredSession();
  return Boolean(session?.cookie);
}

Page({
  data: {
    username: '',
    password: '',
    error: '',
    wechatLoading: false,
    passwordLoading: false,
    touristWarning: '',
    envHint: '',
    agreedToLegal: false,
    showLegalConsent: true,
    showConsentModal: false
  },

  onLoad() {
    const skipConsent = hasStoredSessionCookie() && shouldSkipLoginConsent();
    this.setData({
      agreedToLegal: false,
      showLegalConsent: !skipConsent
    });
    this.refreshEnvHints();
    this.tryAutoLogin();
  },

  refreshEnvHints() {
    const apiBaseUrl = getApiBaseUrl();
    let touristWarning = '';
    let envHint = '';

    if (isTouristMode()) {
      touristWarning =
        '游客模式：微信一键登录不可用。请用 AppID wx3e79ecd530c88da4 重新导入项目，并确认 DevTools 登录微信号已是小程序管理员。';
    }
    if (/127\.0\.0\.1|localhost/i.test(apiBaseUrl)) {
      envHint = '当前连本地 Portal；请确保已运行 pnpm dev 并已重启。';
    }

    this.setData({ touristWarning, envHint });
  },

  async tryAutoLogin() {
    if (!hasStoredSessionCookie()) {
      return;
    }
    try {
      const status = await checkAuth();
      if (status?.authenticated) {
        const app = getApp();
        if (status.user) {
          app.globalData.user = status.user;
        }
        wx.switchTab({ url: '/pages/chat/index' });
      }
    } catch {
      // Stay on the login page when the existing session cannot be verified.
    }
  },

  handleUsername(event) {
    this.setData({ username: event.detail.value, error: '' });
  },

  handlePassword(event) {
    this.setData({ password: event.detail.value, error: '' });
  },

  handleConsentChange(event) {
    const agreedToLegal = (event.detail.value || []).includes('agreed');
    this.setData({ agreedToLegal, error: '' });
  },

  openTerms() {
    wx.navigateTo({ url: '/pages/legal/terms/index' });
  },

  openPrivacy() {
    wx.navigateTo({ url: '/pages/legal/privacy/index' });
  },

  openLegalCenter() {
    wx.navigateTo({ url: '/pages/legal/index/index' });
  },

  ensureLegalConsent() {
    if (!this.data.showLegalConsent || this.data.agreedToLegal) {
      return true;
    }
    this.setData({
      error: '请先阅读并同意《用户服务协议》和《隐私政策》后再登录',
      showConsentModal: true
    });
    return false;
  },

  acceptConsentModal() {
    this.setData({
      agreedToLegal: true,
      showConsentModal: false,
      error: ''
    });
  },

  declineConsentModal() {
    this.setData({ showConsentModal: false });
    wx.showToast({
      title: '需同意协议后方可使用',
      icon: 'none'
    });
  },

  persistConsentAfterLogin() {
    saveLegalConsent();
  },

  async handleWechatLogin() {
    if (!this.ensureLegalConsent()) return;

    this.setData({ wechatLoading: true, error: '' });
    try {
      await loginWithWechatCode(MINIAPP_LOGIN_PATH);
      this.persistConsentAfterLogin();
      wx.switchTab({ url: '/pages/chat/index' });
    } catch (error) {
      this.setData({
        error:
          error?.message ||
          '微信登录暂不可用。若后端尚未开放小程序登录接口，请先使用 H5 账号登录。'
      });
    } finally {
      this.setData({ wechatLoading: false });
    }
  },

  async handlePasswordLogin() {
    if (!this.ensureLegalConsent()) return;

    const username = this.data.username.trim();
    const password = this.data.password;
    if (!username || !password) {
      this.setData({ error: '请输入用户名和密码' });
      return;
    }
    this.setData({ passwordLoading: true, error: '' });
    try {
      await loginWithPassword(username, password);
      this.persistConsentAfterLogin();
      wx.switchTab({ url: '/pages/chat/index' });
    } catch (error) {
      this.setData({ error: error?.message || '登录失败，请重试' });
    } finally {
      this.setData({ passwordLoading: false });
    }
  }
});