Start with Authentication

You can get up and running with Appwrite Authentication in minutes. You can add basic email and password authentication to your app with just a few lines of code.

You can use the Appwrite Client SDKs to create an account using email and password.

After you've created your account, users can be logged in using the Create Email Session method.

Check authentication state

After logging in, you can check the authentication state of the user.

Appwrite's SDKs are stateless, so you need to manage the session state in your app. You can use the Get Account method to check if the user is logged in.

A common pattern is to use route guards to redirect users to the login page if they are not authenticated. You can check the authentication state on app launch and before entering a protected route by calling get().

Route guard implementations are opinionated and depend on the platform and frame you are using. Take a look at some example usages from different platforms as inspiration.

Web frameworks

Before routing to a page, you can check if the user is logged in and redirect them to the login page if they are not.

You can use React router loaders to check if the user is logged in before rendering a route.

You can find a similar example in this YouTube video.

Web

import * as React from "react";
import {
  createBrowserRouter,
} from "react-router-dom";
import "./index.css";

import Login from "./Login";
import Protected from "./Protected";
import { account } from "./lib/appwrite";
import { redirect } from "react-router-dom";


const router = createBrowserRouter([
  {
    path: "/protected",
    element: <Protected />,
    loader: async () => {
      try{
        // logged in? pass user to the route
        const user = await account.get();
        return { user };
      }
      catch {
        // not logged in? redirect to login
        throw redirect('/login')
      }
    }
  },
  {
    path: "/login",
    element: <Login />,
  },
]);

export default router;

You can use Vue router wiht a Pinia store to check if the user is logged in before rendering a route.

First, create a simple Pinia store to manage the authentication state.

Web

import { account, ID, type Models } from '@/lib/appwrite'
import type { register } from 'module';
import { defineStore } from 'pinia'

export const useAuthStore = defineStore({
  id: 'auth',
  state: () => ({
    user: null as null | Models.User<Models.Preferences>,
  }),
getters: {
    isLoggedIn(): boolean {
      return !!this.user;
    },
},
  actions: {
    async init() {
        try {
            this.user = await account.get();
        }
        catch (error) {
            this.user = null;
        }
    },
    // ... other operations
  },
})

Then, check the authentication state before routing to a protected route.

Web

import { createApp } from 'vue'
import { createPinia } from 'pinia'

import App from './App.vue'
import router from './router'
import { useAuthStore } from './stores/auth'

const app = createApp(App)
app.use(createPinia())

const auth = useAuthStore();

auth.init().then(() => {
  router.beforeEach((to, from, next) => {
    // Not logged in? 
    if (to.name == 'protected' && auth.isLoggedIn == false) {
    // Redirect to login if going to a protected route
      next({ name: 'login' })
    } else {
      next()
    }
  })
  app.use(router)
  app.mount('#app')
})

Web

import { Injectable } from '@angular/core';
import { ActivatedRouteSnapshot, CanActivate, RouterStateSnapshot, UrlTree, Router } from '@angular/router';
import { Observable, from, of } from 'rxjs';
import { catchError, map } from 'rxjs/operators';
import { account } from './lib/appwrite';

@Injectable({
  providedIn: 'root'
})
export class AuthGuardGuard implements CanActivate {
  constructor(private router: Router) {}

  canActivate(
    route: ActivatedRouteSnapshot,
    state: RouterStateSnapshot): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree {
    if (route.routeConfig?.path === "protected") {
      return this.checkLogin();
    }
    return of(true);
  }

  private checkLogin(): Observable<boolean | UrlTree> {
    return from(account.get()).pipe(
      map(() => true),
      catchError(() => of(this.router.createUrlTree(['/login'])))
    );
  }
}

In the root level +layout.svelte file, you can check the authentication state before rendering a route.

Web

// src/routes/+layout.js
import { appwrite } from "$lib/appwrite";

// Turn off SSR globally, turning the project into a static site
export const ssr = false;

export const load = async () => {
  try {
    return {
      account: await appwrite.account.get(),
    };
  } catch {
    return {
      account: null,
    };
  }
};

This will be accessible in the load function of each child route.

Web

// src/routes/protected/+page.js
import { redirect } from '@sveltejs/kit';

/** @type {import('./$types').PageLoad} */
export async function load({ parent }) {
	const { account } = await parent();
	if (!account) {
		throw redirect(303, '/login');
	}
}

Mobile and native

With mobile apps, you can apply similar logic to check the authentication state before displaying a screen or view.

This example uses the Flutter Go router as an example, but the same concepts apply to other routing libraries.

First, create a ChangeNotifier to manage the authentication state.

Flutter

import 'package:flutter/material.dart';
import 'package:appwrite/appwrite.dart' show Client, ID;
import 'package:appwrite/appwrite.dart' as Appwrite;
import 'package:appwrite/models.dart' show User;

class Account extends ChangeNotifier {
  final Appwrite.Account _account;

  User? _user;
  User? get user => _user;

  Account(Client client) : _account = Appwrite.Account(client);

  Future<void> init() async {
    try {
      _user = await _account.get();
      
      notifyListeners();
    } catch(e) {
      debugPrint(e.toString());
      rethrow;
    }
  }
  // ... other operations
}

You can then use this state to redirect users to the login page if they are not authenticated.

Flutter

import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';
import 'package:provider/provider.dart';

import './providers/account.dart';

import './pages/login.dart';
import './pages/protected.dart';

String Function(BuildContext context, GoRouterState state) redirect = 
  (BuildContext context, GoRouterState state) => 
    context.read<Account>().user == null && state.matchedLocation != '/login'
    ? '/login' 
    : state.matchedLocation;

final router = GoRouter(
  redirect: redirect,
  initialLocation: '/login',
  routes: [
    GoRoute(
      path: '/login',
      pageBuilder: (context, state) => const MaterialPage(child: LoginPage()),
    ),
    GoRoute(
      path: '/protected',
      pageBuilder: (context, state) => const MaterialPage(child: ProtectedPage()),
    )
  ],  
);

For Apple platforms, this example uses a NavigationStack but you can use similar concepts with other navigation methods.

Initialize Appwrite and create an AppwriteService.

Apple

import Foundation
import Appwrite
import AppwriteModels
import JSONCodable

class Appwrite {
    var client: Client
    var account: Account
    var databases: Databases
    let databaseId = "default"
    let collectionId = "ideas-tracker"

    public init() {
        self.client = Client()
            .setEndpoint("https://<REGION>.cloud.appwrite.io/v1")
            .setProject("<PROJECT_ID>")
        
        self.account = Account(client)
    }
    public func getUser() async throws -> User<[String: AnyCodable]> {
        let user = try await account.get()
        // you can also store the user in a local store
        return user
    }
}

On launch, you can display a SplashView while you verify the authentication state.

Apple

import Foundation
import SwiftUI

struct SplashView: View {
    @EnvironmentObject private var router: Router
    @EnvironmentObject private var AppwriteService: AppwriteService

    var body: some View {
        NavigationStack(path: $router.routes) {
            VStack {
                Text("Example App")
                    .font(.largeTitle)
                    .fontWeight(.bold)
                    .padding()
            }.task {
                let user = await self.AppwriteService.getUser();

                if !user {
                    router.pushReplacement(.login)
                } else {
                    router.pushReplacement(.protected)
                }
            }
            .navigationDestination(for: Route.self, destination: { $0 })

        }
    }
}

In your router, you can also check the authentication state before rendering a route.

Apple

final class Router: ObservableObject {
    @Published var routes = [Route]()

    func push(_ screen: Route) {
        // Make sure you've already stored the user and auth state in a local store
        if (screen == .protected && !isLoggedIn){
            routes.append(.login)
        }
        routes.append(screen)
    }
    // ... other operations
}

Create some Appwrite Service, for example, AppwriteService to manage the authentication state. You can find a version of this example in the Appwrite Android tutorial.

Android (Kotlin)

//... imports

object Appwrite {
    private const val ENDPOINT = "https://<REGION>.cloud.appwrite.io/v1"
    private const val PROJECT_ID = "<PROJECT_ID>"

    private lateinit var client: Client

    fun init(context: Context) {
        client = Client(context)
            .setEndpoint(ENDPOINT)
            .setProject(PROJECT_ID)
    }
}

Then, create an auth service to manage the authentication state.

Android (Kotlin)

//... imports

class AccountService(client: Client) {
    private val account = Account(client)

    suspend fun getLoggedIn(): User<Map<String, Any>>? {
        return try {
            account.get()
        } catch (e: AppwriteException) {
            null
        }
    }   
    // ... other operations
}

Wrap your routes in some view, for example, AppContent, to check the authentication state before rendering a route.

Android (Kotlin)

@Composable
private fun AppContent(accountService: AccountService) {
    val user = remember { mutableStateOf<User<Map<String, Any>>?>(null) }
    val screen = remember { mutableStateOf(Screen.Protected) }

    LaunchedEffect(screen) {
        user.value = accountService.getLoggedIn()
    }

    Scaffold(bottomBar = { AppBottomBar(screen) }) { padding ->
        Column(modifier = Modifier.padding(padding)) {
            when (screen.value) {
                Screen.User -> LoginScreen(user, accountService)
                else -> ProtectedScreen(user.value)
            }
        }
    }
}

In the MainActivity class, initialize the Appwrite service and display the AppContent based on the authentication state.

Android (Kotlin)

// ...imports 
In the `MainActivity` class, initialize the Appwrite service.
class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        Appwrite.init(applicationContext)

        setContent {
            // Update this line 👇
            AppContent(Appwrite.account)
        }
    }
}

This example will use @react-navigation/native and @react-navigation/native-stack to manage the authentication state and redirect users to the login page if they are not authenticated. You can find a version of this example in the Appwrite Android tutorial.

Create a UserContext to manage the authentication state.

React Native

import { StyleSheet, Text, View } from 'react-native';
import { UserProvider } from './contexts/UserContext';
import { Router } from './lib/Router';

export default function App() {
  return (
    <UserProvider>
        <Router />
    </UserProvider >
  );
}

Then, consume the UserContext in your Router component to check the authentication state before rendering a route.

React Native

import { NavigationContainer } from '@react-navigation/native';
import LoginScreen from '../views/Login';
import ProtectedSCreen from '../views/Protected';
import { createNativeStackNavigator } from '@react-navigation/native-stack';
import { useUser } from '../contexts/UserContext';

const Stack = createNativeStackNavigator();
export function Router() {
    const user = useUser();
    return (
        <NavigationContainer>
            <Stack.Navigator>
                {user.current == null ? (
                    <Stack.Screen
                        name="Login"
                        component={LoginScreen}
                        options={{ title: 'Login' }}
                    />
                ) : (
                    <Stack.Screen
                        name="Protected"
                        component={ProtectedSCreen}
                        options={{ title: 'Protected' }}
                    />
                )}

            </Stack.Navigator>
        </NavigationContainer>
    );
}

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Update on GitHub

Start with Authentication

Check authentication state

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