cothema / ionic-universal-firebase-login

import * as firebase from "firebase";

import { Observable, Subscriber } from "rxjs";

import { switchMap } from "rxjs/operators";

import { UniFirebaseLoginConfig } from "../config/uni-firebase-login-config";

import { UniFirebaseLoginConfigProvider } from "../config/uni-firebase-login-config-provider";

import { UserModel } from "../model/user-model";

import { IStorageProvider } from "./i-storage-provider";

export abstract class AbstractStorage<User extends UserModel = UserModel>

    implements IStorageProvider<User> {

    protected config: UniFirebaseLoginConfig;

    protected constructor(

        protected angularFireAuth: AngularFireAuth,

        configProvider: UniFirebaseLoginConfigProvider,

    ) {

        this.config = configProvider.config;

    }

    public abstract async updateStoredDataByUser(user: User): Promise<void>;

    public abstract async updateStoredDataByFirebaseUser(

        firebaseUser: firebase.User,

    ): Promise<void>;

            this.angularFireAuth.authState.pipe(

                switchMap((user: any) => {

                    if (user) {

                        this.fetchUserFromStorageByFirebaseUser(user).subscribe(

                            result => {

                                subscriber.next(result);

                            },

                        );

                    } else {

                        // Logged out

                        subscriber.next(null);

                    }

                    return user;

                }),

            );

        });

    }

    protected abstract fetchUserFromStorageByFirebaseUser(

        user: firebase.User,

    ): Observable<User | null>;

    /**

     * Override this method if you want to use custom model class

     */

    protected getNewUser(): User {

        return this.config.userFactoryFunc() as User;

    }

}