我试图让每个用户都有自己的数据，但我有我的用户保存在firebase和我的数据保存在JSON服务器，有没有办法连接他们？使每次用户注册和登录有自己的数据与其他用户分开。我希望你明白我想做的：）
下面是我在jsonserver.service.ts上存储数据的服务：

import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';

@Injectable({
  providedIn: 'root'
})
export class ApiService {

  constructor(private http : HttpClient,) { }
// order Table
 postOrder(data : any){
  return this.http.post<any>("http://localhost:3000/OrderList/",data);
 }
 getOrder(){
  return this.http.get<any>("http://localhost:3000/OrderList/");
 }
// order detials

 postOrderDetials(data : any){
  return this.http.post<any>("http://localhost:3000/OrderDetials/",data);
 }
 getOrderDetials(){
  return this.http.get<any>("http://localhost:3000/OrderDetials/");
 }
// item table

 postItemTable(data : any){
  return this.http.post<any>("http://localhost:3000/itemTable/",data);
 }

 getItemTable(){
  return this.http.get<any>("http://localhost:3000/itemTable/");
 }
// delete a row in the order table
 DeleteOrder(id : number){
  return this.http.delete<any>("http://localhost:3000/OrderList/"+id)
 }
// to edit the item table 
 PutItem(data : any , id : number){
  return this.http.put<any>("http://localhost:3000/itemTable/"+id,data);
 }
//  to add to the operation table
postOperation(data : any){
  return this.http.post<any>("http://localhost:3000/OperationTable/",data);
}
getOperation(){
  return this.http.get<any>("http://localhost:3000/OperationTable/");
}
}

下面是我的service.ts，用于将用户保存到firebase中：

interface authResponeData {
  kind: string;
  idToken: string;
  email : string;
  refreshToken : string;
  expiresIn: string;
  localId:string;
}

@Injectable({
  providedIn: 'root'
})
export class AuthService {
  userData: any;

  constructor(
    private fireAuth : AngularFireAuth, private router : Router,
    public angularFireAuth: AngularFireAuth,
    private api : ApiService) {}

    login(email : string , password : string) {
      this.fireAuth.signInWithEmailAndPassword(email,password).then( ()=> {
        localStorage.setItem('AIzaSyC6Y3IuqNUMfEe-xQFpmviAD2dWeBCuztI' , 'true');
        this.router.navigate(['Order-table']);
        this.angularFireAuth.currentUser.then( data  => {
          console.log(data?.uid);
      })
      },err => {
        alert(err.message);
        this.router.navigate(['/login']);
      })
    }

  register(email : string , password : string){
    this.fireAuth.createUserWithEmailAndPassword(email , password).then( () => { 
      alert("registration successful")
      this.router.navigate(['/login']);
    }, err => {
      alert(err.message);
      this.router.navigate(['/register']);
    })
  }

  SignOff() {
    this.fireAuth.signOut().then( () => {
      localStorage.removeItem('AIzaSyC6Y3IuqNUMfEe-xQFpmviAD2dWeBCuztI');
      this.router.navigate(['/login']);
    }, err => {
      alert(err.message); 
    })
  }

我希望，我把所有需要的信息，如果任何信息需要只是让我知道