how call auth api in laravel code example

Example 1: create new authentication middleware laravel

php artisan make:middleware BasicAuth //In console.

//BasicAuth.php file is created:
<?php
namespace App\Http\Middleware;

use Closure;
use Illuminate\Support\Facades\Auth;

class AdminAuth {
	/**
	* Handle an incoming request.
	*
	* @param  \Illuminate\Http\Request  $request
	* @param  \Closure  $next
	* @return mixed
	*/
	public function handle($request, Closure $next) {
		return $next($request);
	}
}

//Replace handle function:
public function handle($request, Closure $next) {
	//The following line(s) will be specific to your project, and depend on whatever you need as an authentication.
  	$isAuthenticatedAdmin = (Auth::check() && Auth::user()->admin == 1);
  
  	//This will be excecuted if the new authentication fails.
	if (! $isAuthenticatedAdmin)
		return redirect('/login')->with('message', 'Authentication Error.');
	return $next($request);
}

//In app/Http/Kernel.php, add this line:
protected $routeMiddleware = [
	/*
	* All the laravel-defined authentication methods
	*/
  'adminAuth' => \App\Http\Middleware\AdminAuth::class //Registering New Middleware
];

//In routes/web.php, add this at the end of the desired routes:
Route::get('/adminsite', function () {
	return view('adminsite');
})->middleware('adminAuth'); //This line makes the route use your new authentication middleware.

Example 2: laravel 7 user registration using api post endpoint

<?php

namespace App\Http\Controllers;


use Illuminate\Http\Request;
use App\User;

class AuthController extends Controller
{
    public $loginAfterSignUp = true;

    public function register(Request $request)
    {
      $user = User::create([
        'name' => $request->name,
        'email' => $request->email,
        'password' => bcrypt($request->password),
      ]);

      $token = auth()->login($user);

      return $this->respondWithToken($token);
    }

    public function login(Request $request)
    {
      $credentials = $request->only(['email', 'password']);

      if (!$token = auth()->attempt($credentials)) {
        return response()->json(['error' => 'Unauthorized'], 401);
      }

      return $this->respondWithToken($token);
    }
    public function getAuthUser(Request $request)
    {
        return response()->json(auth()->user());
    }
    public function logout()
    {
        auth()->logout();
        return response()->json(['message'=>'Successfully logged out']);
    }
    protected function respondWithToken($token)
    {
      return response()->json([
        'access_token' => $token,
        'token_type' => 'bearer',
        'expires_in' => auth()->factory()->getTTL() * 60
      ]);
    }

}