feat: add refresh_oauth_token() API (#32)

* Fix init imports

* Refresh token was appended
request for access_token export to new method

* Codestyle was fixed

* Codestyle was fixed

* Codestyle was fixed

* Codestyle was fixed
New method appended to Readme

README.md

@@ -91,3 +91,4 @@ casdoor-python-sdk support basic user operations, like:
 - `get_user(user_id: str)`, get one user by user name.
 - `get_users()`, get all users.
 - `modify_user(method: str, user: User)/add_user(user: User)/update_user(user: User)/delete_user(user: User)`, write user to database.
+- `refresh_token_request(refresh_token: str, scope: str)`, refresh access token

src/casdoor/main.py

@@ -70,14 +70,51 @@ def get_oauth_token(self, code: str) -> str:
         :param code: the code that sent from Casdoor using redirect url back to your server.
         :return: access_token
         """
+        r = self.oauth_token_request(code)
+        access_token = r.json().get("access_token")
+
+        return access_token
+
+    def oauth_token_request(self, code: str) -> requests.Response:
+        """
+        Request the Casdoor server to get access_token.
+        :param code: the code that sent from Casdoor using redirect url back to your server.
+        :return: Response from Casdoor
+        """
         url = self.endpoint + "/api/login/oauth/access_token"
         params = {
             "grant_type": self.grant_type,
             "client_id": self.client_id,
             "client_secret": self.client_secret,
             "code": code,
         }
-        r = requests.post(url, params)
+        return requests.post(url, params)
+
+    def refresh_token_request(self, refresh_token: str, scope: str = "") -> requests.Response:
+        """
+        Request the Casdoor server to get access_token.
+        :param refresh_token: refresh_token for send to Casdoor
+        :param scope: OAuth scope
+        :return: Response from Casdoor
+        """
+        url = self.endpoint + "/api/login/oauth/refresh_token"
+        params = {
+            "grant_type": self.grant_type,
+            "client_id": self.client_id,
+            "client_secret": self.client_secret,
+            "scope": scope,
+            "refresh_token": refresh_token,
+        }
+        return requests.post(url, params)
+
+    def refresh_oauth_token(self, refresh_token: str, scope: str = "") -> str:
+        """
+        Request the Casdoor server to get access_token.
+        :param refresh_token: refresh_token for send to Casdoor
+        :param scope: OAuth scope
+        :return: Response from Casdoor
+        """
+        r = self.refresh_token_request(refresh_token, scope)
         access_token = r.json().get("access_token")
 
         return access_token

src/tests/test_oauth.py

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from requests import Response
 from src.casdoor.main import CasdoorSDK, User
 from unittest import TestCase
 
@@ -45,6 +46,25 @@ def test_get_oauth_token(self):
         access_token = sdk.get_oauth_token(self.code)
         self.assertIsInstance(access_token, str)
 
+    def test_oauth_token_request(self):
+        sdk = self.get_sdk()
+        response = sdk.oauth_token_request(self.code)
+        self.assertIsInstance(response, Response)
+
+    def test_refresh_token_request(self):
+        sdk = self.get_sdk()
+        response = sdk.oauth_token_request(self.code)
+        refresh_token = response.json().get("refresh_token")
+        response = sdk.refresh_token_request(refresh_token)
+        self.assertIsInstance(response, Response)
+
+    def test_get_oauth_refreshed_token(self):
+        sdk = self.get_sdk()
+        response = sdk.oauth_token_request(self.code)
+        refresh_token = response.json().get("refresh_token")
+        response = sdk.refresh_oauth_token(refresh_token)
+        self.assertIsInstance(response, str)
+
     def test_parse_jwt_token(self):
         sdk = self.get_sdk()
         access_token = sdk.get_oauth_token(self.code)