refactor: split backend by context instead of type 'controllers/models/...'

app/auth/controllers/auth_controller.ts

@@ -0,0 +1,78 @@
+import User from '#user/models/user';
+import type { HttpContext } from '@adonisjs/core/http';
+import logger from '@adonisjs/core/services/logger';
+import db from '@adonisjs/lucid/services/db';
+import { RouteName } from '@izzyjs/route/types';
+
+export default class AuthController {
+	private redirectTo: RouteName = 'auth';
+
+	login({ inertia }: HttpContext) {
+		return inertia.render('login');
+	}
+
+	google = ({ ally }: HttpContext) => ally.use('google').redirect();
+
+	async callbackAuth({ ally, auth, response, session }: HttpContext) {
+		const google = ally.use('google');
+		if (google.accessDenied()) {
+			// TODO: translate error messages + show them in UI
+			session.flash('flash', 'Access was denied');
+			return response.redirectToNamedRoute(this.redirectTo);
+		}
+
+		if (google.stateMisMatch()) {
+			session.flash('flash', 'Request expired. Retry again');
+			return response.redirectToNamedRoute(this.redirectTo);
+		}
+
+		if (google.hasError()) {
+			session.flash('flash', google.getError() || 'Something went wrong');
+			return response.redirectToNamedRoute(this.redirectTo);
+		}
+
+		const userCount = await db.from('users').count('* as total');
+		const {
+			email,
+			id: providerId,
+			name,
+			nickName,
+			avatarUrl,
+			token,
+		} = await google.user();
+		const user = await User.updateOrCreate(
+			{
+				email,
+			},
+			{
+				email,
+				providerId,
+				name,
+				nickName,
+				avatarUrl,
+				token,
+				providerType: 'google',
+				isAdmin: userCount[0].total === '0' ? true : undefined,
+			}
+		);
+
+		await auth.use('web').login(user);
+		session.flash('flash', 'Successfully authenticated');
+		logger.info(`[${user.email}] auth success`);
+
+		response.redirectToNamedRoute('dashboard');
+	}
+
+	async logout({ auth, response, session }: HttpContext) {
+		await auth.use('web').logout();
+		session.flash('flash', 'Successfully disconnected');
+		logger.info(`[${auth.user?.email}] disconnected successfully`);
+		response.redirect('/');
+	}
+
+	async getAllUsersWithTotalRelations() {
+		return User.query()
+			.withCount('collections', (q) => q.as('totalCollections'))
+			.withCount('links', (q) => q.as('totalLinks'));
+	}
+}

app/auth/middlewares/auth_middleware.ts

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+import type { Authenticators } from '@adonisjs/auth/types';
+import type { HttpContext } from '@adonisjs/core/http';
+import type { NextFn } from '@adonisjs/core/types/http';
+import { route } from '@izzyjs/route/client';
+
+/**
+ * Auth middleware is used authenticate HTTP requests and deny
+ * access to unauthenticated users.
+ */
+export default class AuthMiddleware {
+	/**
+	 * The URL to redirect to, when authentication fails
+	 */
+	redirectTo = route('auth').path;
+
+	async handle(
+		ctx: HttpContext,
+		next: NextFn,
+		options: {
+			guards?: (keyof Authenticators)[];
+		} = {}
+	) {
+		await ctx.auth.authenticateUsing(options.guards, {
+			loginRoute: this.redirectTo,
+		});
+		return next();
+	}
+}

app/auth/middlewares/guest_middleware.ts

@@ -0,0 +1,31 @@
+import type { HttpContext } from '@adonisjs/core/http';
+import type { NextFn } from '@adonisjs/core/types/http';
+import type { Authenticators } from '@adonisjs/auth/types';
+
+/**
+ * Guest middleware is used to deny access to routes that should
+ * be accessed by unauthenticated users.
+ *
+ * For example, the login page should not be accessible if the user
+ * is already logged-in
+ */
+export default class GuestMiddleware {
+	/**
+	 * The URL to redirect to when user is logged-in
+	 */
+	redirectTo = '/';
+
+	async handle(
+		ctx: HttpContext,
+		next: NextFn,
+		options: { guards?: (keyof Authenticators)[] } = {}
+	) {
+		for (let guard of options.guards || [ctx.auth.defaultGuard]) {
+			if (await ctx.auth.use(guard).check()) {
+				return ctx.response.redirect(this.redirectTo, true);
+			}
+		}
+
+		return next();
+	}
+}

app/auth/middlewares/silent_auth_middleware.ts

@@ -0,0 +1,9 @@
+import type { HttpContext } from '@adonisjs/core/http';
+import type { NextFn } from '@adonisjs/core/types/http';
+
+export default class SilentAuthMiddleware {
+	async handle(ctx: HttpContext, next: NextFn) {
+		await ctx.auth.check();
+		return next();
+	}
+}

app/auth/routes/auth_routes.ts

@@ -0,0 +1,27 @@
+import { middleware } from '#start/kernel';
+import router from '@adonisjs/core/services/router';
+const AuthController = () => import('#auth/controllers/auth_controller');
+
+const ROUTES_PREFIX = '/auth';
+
+/**
+ * Auth routes for unauthicated users
+ */
+router
+	.group(() => {
+		router.get('/google', [AuthController, 'google']).as('auth');
+		router
+			.get('/callback', [AuthController, 'callbackAuth'])
+			.as('auth.callback');
+	})
+	.prefix(ROUTES_PREFIX);
+
+/**
+ * Routes for authenticated users
+ */
+router
+	.group(() => {
+		router.get('/logout', [AuthController, 'logout']).as('auth.logout');
+	})
+	.middleware([middleware.auth()])
+	.prefix(ROUTES_PREFIX);

app/auth/routes/routes.ts

@@ -0,0 +1 @@
+import './auth_routes.js';