add whoami API endpoint

tildes/openapi_beta.yaml

@@ -52,6 +52,23 @@ paths:
           $ref: "#/components/responses/ValidationError"
         "401":
           $ref: "#/components/responses/AuthenticationError"
+
+  /whoami:
+    get:
+      summary: Get username for currently logged in user
+      responses:
+        "200":
+          description: Username of the currently logged in user
+          content:
+            application/json:
+              schema:
+                type: object
+                required:
+                  - msg
+                properties:
+                  msg:
+                    type: string
+
   /topics:
     get:
       summary: Get a list of topics

tildes/tildes/routes.py

@@ -135,6 +135,7 @@ def includeme(config: Configurator) -> None:
 
     with config.route_prefix_context("/api/beta"):
         config.add_route("apibeta.login", "/login")
+        config.add_route("apibeta.whoami", "/whoami")
         config.add_route("apibeta.topics", "/topics")
         config.add_route("apibeta.topic", "/topic/{topic_id36}")
         config.add_route("apibeta.user", "/user/{username}")

tildes/tildes/views/api/beta/auth.py

@@ -109,3 +109,16 @@ def login(request: Request) -> dict:
     token = jwt_policy.create_jwt_token(user.user_id)
 
     return {"token": token}
+
+
+@view_config(route_name="apibeta.whoami", openapi=True, renderer="json")
+def whoami(request: Request) -> dict:
+    """Endpoint to let a user verify that they are authenticated."""
+
+    user = request.user
+    if not user:
+        msg = "You are not logged in"
+    else:
+        msg = f"You are logged in as {user.username}"
+
+    return {"msg": msg}