get oauth token info methods, static stat lookup with access token

src/Auth.php

@@ -98,7 +98,23 @@ public static function refresh($refresh_token) {
      * Returns current refresh token.
      * @return string OAuth2 refresh token
      */
-    public function getRefreshToken() {
+    public function refreshToken() {
         return $this->refresh_token;
     }
+
+    /**
+     * Returns the current access token's expire time.
+     * @return string OAuth2 expire time
+     */
+    public function expiresAt() {
+        return $this->expires_at;
+    }
+
+    /**
+     * Returns current access token.
+     * @return string OAuth2 access token
+     */
+    public function accessToken() {
+        return $this->access_token;
+    }
 }

src/Stats.php

@@ -76,6 +76,18 @@ public function lookup($username) {
         }
     }
 
+    //TODO (Tustin): Make this not redundant
+    public static function lookupWithToken($username, $access_token) {
+        try {
+            $data = FortniteClient::sendFortniteGetRequest(FortniteClient::FORTNITE_PERSONA_API . 'public/account/lookup?q=' . urlencode($username),
+                                                        $access_token);
+            return new self($access_token, $data->id);
+        } catch (GuzzleException $e) {
+            if ($e->getResponse()->getStatusCode() == 404) throw new UserNotFoundException('User ' . $username . ' was not found.');
+            throw $e; //If we didn't get the user not found status code, just re-throw the error.
+        }
+    }
+
     /**
      * Parses a stat string into a mapped array.
      * @param  string $stat The stat string