Implemented missing todos in index.py. Added some packages in pipfile.

Pipfile

@@ -6,7 +6,9 @@ name = "pypi"
 [packages]
 fastapi = "*"
 sqlmodel = "*"
+python-jose = "*"
 uvicorn = "*"
+starlette = "*"
 
 [dev-packages]
 

index.py

@@ -1,47 +1,91 @@
+
 from __future__ import print_function
 
 import time
-from typing import Any, Dict, Optional
-
-from fastapi import FastAPI
-
-from typing import Optional
-
+from typing import Any, Optional
+from fastapi.security import APIKeyCookie
+from fastapi import FastAPI, HTTPException, Depends
 from sqlmodel import Field, Session, SQLModel, create_engine, select
+from starlette import status
+from starlette.responses import Response
+from jose import jwt
+
+def get_current_timestamp():
+    return int(time.time())
 
 class User(SQLModel, table=True):
-    # TODO change the default value to the timestamp that the user is created
-    id: Optional[int] = Field(default=None, primary_key=True)
+    # The default value is set to the timestamp that the user is created
+    id: Optional[int] = Field(default=get_current_timestamp(), primary_key=True)
     name: str
     secret_name: str
     age: Optional[str] = None
 
 engine = create_engine("sqlite:///database.db")
 SQLModel.metadata.create_all(engine)
+
 # Create an instance of the API class
 app = FastAPI()
 
+cookie_sec = APIKeyCookie(name="session", auto_error=False)
+secret_key = "someactualsecret"
+
+# This function allows to obtain the current user from the logged session
+# I read the following guide: https://github.com/tiangolo/fastapi/issues/754 just to set up some fake login to show the user name
+# The login is simulated in the post api (see below)
+
+def get_current_user(session: str = Depends(cookie_sec)):
+
+    if session is None:
+        # If there is no session, no user is logged
+        return None
+    else:
+        try:
+            # Get the user name from the session
+            payload = jwt.decode(session, secret_key, algorithms=['HS256'])
+            user = payload["sub"]
+            return user
+        except Exception:
+            raise HTTPException(
+                status_code=status.HTTP_403_FORBIDDEN, detail="Invalid authentication"
+            )
+
+
 @app.get("/")
-async def root():
-    # TODO include the user's name if they are logged in
-    return {"message": "Hello {}".format("World")}
+async def root(user: str =  Depends(get_current_user)):
+    #Include the user's name if they are logged in
+    if user is not None:
+        return {"message": "Hello {}".format(user)}
+    else:
+        return {"message": "Hello {}".format("World")}
 
 
 @app.post("/user")
-async def create_new_user(*, user: User):
+async def create_new_user(response: Response, * , user: User):
     with Session(engine) as session:
-      session.add(user)
-      session.commit()
-    # TODO return the User ID
-    return {"message": "User created"}
+      # check if the user id already exist
+      statement = select(User).where(User.id == user.id)
+      results = session.exec(statement).all()
+      if len(results)>0:
+          return {"message": "User with user id {} already exists".format(user.id)}
+      else:
+        session.add(user)
+        session.commit()
+        # Simulated a login when creating a user (just to have an example of setting a Cookie with a Token)
+        token = jwt.encode({"sub": user.name}, secret_key, algorithm='HS256')
+        response.set_cookie("session", token)
+        # return the User ID
+        return {"message": "User with user id {} has been created".format(user.id)}
 
 @app.get("/user/{id}")
 async def get_user(id: int):
-  with Session(engine) as session:
-     # TODO return the user based on the ID (and an error if not)
-     statement = select(User).where(User.name == id)
-     user = session.exec(statement).first()
-     return {"user": user}
+    with Session(engine) as session:
+        # return the user based on the ID (and an error if not)
+        statement = select(User).where(User.id == id)
+        user = session.exec(statement).first()
+        if user is not None:
+            return {"user": user}
+        else:
+            raise HTTPException(status_code=404, detail="User {} could not be found".format(id))
 
 @app.get("/api/webhooks")
 async def handle_hook(*, event: Any):