Untitled

import eb from '../../../eb';
import userModel from './UserModel';

export class UserEntity {
	public userId;
	public isSyncedWithDb = false;
	public hasLoaded = false;
	public exist = undefined;
	public syncedOb =  {};
	public subscriptionCounts = 0;

	constructor(userId: string) {
		this.userId = userId;
	}

	public subscribe(){
	    this.subsctiptionCounts++;
		this.subsctiptionCounts === 1 && this.unsubscribe = userModel.onUserSnapshot(this.userId, snapshot => {
			
			if (!this.isSyncedWithDb) {
				this.isSyncedWithDb = true;
			}
			if (!this.hasLoaded) {
				this.hasLoaded = true;
			}
			this.exist = snapshot.exists;

			if (snapshot.data()) {
				this.syncedOb = snapshot.data()
				
			}
		});
	}

	public unsubscribe() {
	    
	    this.subsctiptionCounts--;
	    
		try {
			this.subsctiptionCounts === 0 && this.isSyncedWithDb = false;
			this.subsctiptionCounts === 0 && this.unsubscribe();
		} catch (error) {
			
		}
	}

	public changeUserPassword = async (newPassword: string) => {
		return userModel.changeUserPassword(this.userId, newPassword);
	};

}

// Model

import functions from '@react-native-firebase/functions';
import firestore from '@react-native-firebase/firestore';

const UserModel = {
	onUserSnapshot: (userId: string, callback: any) => {
		return firestore().collection('Users').doc(userId).onSnapshot(callback);
	},
	changeUserPassword: (userId: string, newPassword: string) => {
		return functions().httpsCallable('changeSelfpassword')({password: newPassword});
	}
};

export default UserModel;

// Repository

import globalStore from './../globalStore';

const loadUser(userId: string) {
    if(!globalStore.user){
        const userEntity = proxy(new UserEntity(userId));
	    globalStore.user = userEntity;
    }
}

// Global Store

import {proxy} from 'valtio';

export default proxy({});

// How I use that

useUser = ()=> {
    
    const { user } = useSnapshot(globalStore);
    
    useEffect(()=> {
        loadUser(userId);
        user.subscribe();
        return () => user.unsubscribe();
    })
    
    return user
    
}