FirebaseGuard.php updated to use the Laravel Guard interface correctly.

src/FirebaseGuard.php

@@ -2,57 +2,102 @@
 
 namespace Firevel\FirebaseAuthentication;
 
+use Illuminate\Contracts\Auth\Guard;
+use Illuminate\Contracts\Auth\Authenticatable;
 use Illuminate\Http\Request;
 use Kreait\Firebase\JWT\IdTokenVerifier;
 
-class FirebaseGuard
+class FirebaseGuard implements Guard
 {
-    /**
-     * @var Kreait\Firebase\JWT\IdTokenVerifier
-     */
-    protected $verifier;
-
-    /**
-     * Constructor.
-     *
-     * @return void
-     */
-    public function __construct(IdTokenVerifier $verifier)
-    {
-        $this->verifier = $verifier;
-    }
-
-    /**
-     * Get User by request claims.
-     *
-     * @return mixed|null
-     */
-    public function user(Request $request)
-    {
-        $token = $request->bearerToken();
-
-        if (empty($token)) {
-            return;
-        }
-
-        try {
-            $firebaseToken = $this->verifier->verifyIdToken($token);
-
-            return app(config('auth.providers.users.model'))
-                ->resolveByClaims($firebaseToken->payload())
-                ->setFirebaseAuthenticationToken($token);
-        } catch (\Exception $e) {
-            if ($e instanceof \Kreait\Firebase\JWT\Error\IdTokenVerificationFailed) {
-                if (str_contains($e->getMessage(), 'token is expired')) {
-                    return;
-                }
-            }
-
-            if (config('app.debug')) {
-                throw $e;
-            }
-
-            return;
-        }
-    }
-}
+	/**
+	 * @var Kreait\Firebase\JWT\IdTokenVerifier
+	 */
+	protected $verifier;
+	protected $user;
+	protected $request;
+
+	/**
+	 * Constructor.
+	 *
+	 * @return void
+	 */
+	public function __construct(IdTokenVerifier $verifier, ?Request $request = null)
+	{
+		$this->verifier = $verifier;
+		$this->request = $request ?: request();
+	}
+
+	/**
+	 * Get User by request claims.
+	 *
+	 * @return mixed|null
+	 */
+	public function user()
+	{
+		if ($this->user) {
+			return $this->user;
+		}
+
+		$token = $this->request->bearerToken();
+		if (empty($token)) {
+			return;
+		}
+
+		try {
+			$firebaseToken = $this->verifier->verifyIdToken($token);
+
+			$user = app(config('auth.providers.users.model'))
+				->resolveByClaims($firebaseToken->payload());
+
+			if ($user) {
+				$user->setFirebaseAuthenticationToken($token);
+			}
+
+			return $this->user = $user;
+		} catch (\Exception $e) {
+			if ($e instanceof \Kreait\Firebase\JWT\Error\IdTokenVerificationFailed) {
+				if (str_contains($e->getMessage(), 'token is expired')) {
+					return;
+				}
+			}
+
+			if (config('app.debug')) {
+				throw $e;
+			}
+
+			return;
+		}
+	}
+
+	public function validate(array $credentials = [])
+	{
+		// not used - Laravels sessionless guards skip this
+		return (bool) $this->user();
+	}
+
+	public function id()
+	{
+		return $this->user()?->getAuthIdentifier();
+	}
+
+	public function check()
+	{
+		return !is_null($this->user());
+	}
+
+	public function guest()
+	{
+		return is_null($this->user());
+	}
+
+	public function setUser(Authenticatable $user)
+	{
+		$this->user = $user;
+		return $this;
+	}
+
+	public function hasUser()
+	{
+		return !is_null($this->user);
+	}
+}