如何向Firestore Go SDK认证用户？

go get firebase.google.com/go

package main

import (
	"context"
	"log"
	"os"

	firebase "firebase.google.com/go"
	"google.golang.org/api/option"
)

func main() {
	// 使用服务账号密钥文件初始化Firebase Admin SDK
	opt := option.WithCredentialsFile("path/to/serviceAccountKey.json")
	app, err := firebase.NewApp(context.Background(), nil, opt)
	if err != nil {
		log.Fatalf("error initializing app: %v\n", err)
	}

	// 获取Auth客户端
	authClient, err := app.Auth(context.Background())
	if err != nil {
		log.Fatalf("error getting Auth client: %v\n", err)
	}

	// 获取Firestore客户端
	firestoreClient, err := app.Firestore(context.Background())
	if err != nil {
		log.Fatalf("error getting Firestore client: %v\n", err)
	}
	defer firestoreClient.Close()

	// 你的代码逻辑
}

func verifyIDToken(authClient *auth.Client, idToken string) (*auth.Token, error) {
	// 验证ID令牌
	token, err := authClient.VerifyIDToken(context.Background(), idToken)
	if err != nil {
		return nil, err
	}
	return token, nil
}

func main() {
	// 使用服务账号密钥文件初始化Firebase Admin SDK
	opt := option.WithCredentialsFile("path/to/serviceAccountKey.json")
	app, err := firebase.NewApp(context.Background(), nil, opt)
	if err != nil {
		log.Fatalf("error initializing app: %v\n", err)
	}

	// 获取Auth客户端
	authClient, err := app.Auth(context.Background())
	if err != nil {
		log.Fatalf("error getting Auth client: %v\n", err)
	}

	// 获取Firestore客户端
	firestoreClient, err := app.Firestore(context.Background())
	if err != nil {
		log.Fatalf("error getting Firestore client: %v\n", err)
	}
	defer firestoreClient.Close()

	// 假设你从客户端获取了ID令牌
	idToken := "your_id_token_here"

	// 验证ID令牌
	token, err := verifyIDToken(authClient, idToken)
	if err != nil {
		log.Fatalf("error verifying ID token: %v\n", err)
	}

	// 使用认证用户的信息访问Firestore
	uid := token.UID
	log.Printf("Authenticated user ID: %s\n", uid)

	// 示例：向Firestore添加数据
	_, _, err = firestoreClient.Collection("users").Add(context.Background(), map[string]interface{}{
		"uid":  uid,
		"name": "John Doe",
	})
	if err != nil {
		log.Fatalf("error adding document: %v\n", err)
	}

	log.Println("Document added successfully")
}