Implement /auth/permissions endpoint

Change `ClientPermissions` to extend pydantic class for OpenAPI compat.
Closes #29

neon_hana/app/routers/auth.py

@@ -27,6 +27,7 @@
 from fastapi import APIRouter, Request
 
 from neon_hana.app.dependencies import client_manager
+from neon_hana.auth.permissions import ClientPermissions
 from neon_hana.schema.auth_requests import *
 
 auth_route = APIRouter(prefix="/auth", tags=["authentication"])
@@ -42,3 +43,8 @@ async def check_login(auth_request: AuthenticationRequest,
 @auth_route.post("/refresh")
 async def check_refresh(request: RefreshRequest) -> AuthenticationResponse:
     return client_manager.check_refresh_request(**dict(request))
+
+
+@auth_route.post("/permissions")
+async def check_permissions(request: PermissionsRequest) -> ClientPermissions:
+    return client_manager.get_permissions(request.client_id)

neon_hana/auth/permissions.py

@@ -24,7 +24,8 @@
 # NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 # SOFTWARE,  EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-from dataclasses import dataclass, asdict
+from dataclasses import asdict
+from pydantic.dataclasses import dataclass
 
 
 @dataclass

neon_hana/schema/auth_requests.py

@@ -65,3 +65,8 @@ class RefreshRequest(BaseModel):
     access_token: str
     refresh_token: str
     client_id: str
+
+
+class PermissionsRequest(BaseModel):
+    access_token: str
+    client_id: str