my-links/app/middleware/auth_middleware.ts

import type { HttpContext } from '@adonisjs/core/http';
import type { NextFn } from '@adonisjs/core/types/http';
import type { Authenticators } from '@adonisjs/auth/types';

/**
 * 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 = '/login';

  async handle(
    ctx: HttpContext,
    next: NextFn,
    options: {
      guards?: (keyof Authenticators)[];
    } = {}
  ) {
    await ctx.auth.authenticateUsing(options.guards, { loginRoute: this.redirectTo });
    return next();
  }
}