如何识别通过 Firebase 进行的现有 Google OAuth 身份验证并在 Angular 2 中执行 Google 目录 API 请求?

How to recognise an existing Google OAuth authentication made via Firebase and perform a Google Directory API request in Angular 2?

我想使用我现有的身份验证并能够使用相同的身份验证对 Google 目录 API 执行获取请求。这是我当前的代码:

login() {
    this.firebaseRef = new Firebase('https://xxx.firebaseio.com');
    this.firebaseRef.authWithOAuthPopup("google", (error, authData) => {
        if (error) {
            console.log("Login Failed!", error);
        } else {
            console.log("Authenticated successfully with payload:", authData);
        }
    }, {
            scope: "https://www.googleapis.com/auth/admin.directory.user.readonly"
    });
}

getData() {
    // TO-DO
    // Recognise existing OAuth and perform a GET request to
    // https://www.googleapis.com/admin/directory/v1/users?domain=nunoarruda.com
}

您可以在 firebaseRef 实例上利用 getAuth 方法。类似的东西:

getData() {
  var authData = this.firebaseRef.getData();
  var provider = authData.provider;
  // In your case provider contains "google"
}

查看此文档:https://www.firebase.com/docs/web/api/firebase/getauth.html

我找到了解决办法。我需要在 http 请求 headers 中使用当前的访问令牌来获取 GET 请求。

import {Http, Headers} from 'angular2/http';

getData() {
    // get access token
    let authData = this.firebaseRef.getAuth();
    let oauthToken = authData.google.accessToken;
    console.log(oauthToken);

    // set authorization on request headers
    let headers = new Headers();
    headers.append('Authorization', 'Bearer ' + oauthToken);

    // api request
    this.http.get('https://www.googleapis.com/admin/directory/v1/users?domain=nunoarruda.com',{headers: headers}).subscribe((res) => {
        console.log(res.json());
    });
}