from fastapi import Depends, FastAPI
from fastapi.security import OAuth2PasswordBearer

app = FastAPI()

oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")


@app.get("/items/")
async def read_items(token: str = Depends(oauth2_scheme)):

app = FastAPI()

oauth2_scheme = OAuth2AuthorizationCodeBearer(
    authorizationUrl="authorize",
    tokenUrl="token",
    description="OAuth2 Code Bearer",
    auto_error=True,
)


@app.get("/items/")
async def read_items(token: Optional[str] = Security(oauth2_scheme)):
    return {"token": token}


client = TestClient(app)


def test_no_token():
    response = client.get("/items")

from pydantic import BaseModel

app = FastAPI()

oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")


class User(BaseModel):
    username: str
    email: Union[str, None] = None
    full_name: Union[str, None] = None
    disabled: Union[bool, None] = None


def fake_decode_token(token):
    return User(
        username=token + "fakedecoded", email="******@****.***", full_name="John Doe"
    )

///

## Return the token { #return-the-token }

The response of the `token` endpoint must be a JSON object.

It should have a `token_type`. In our case, as we are using "Bearer" tokens, the token type should be "`bearer`".

And it should have an `access_token`, with a string containing our access token.

///

## Devolver el token { #return-the-token }

El response del endpoint `token` debe ser un objeto JSON.

Debe tener un `token_type`. En nuestro caso, como estamos usando tokens "Bearer", el tipo de token debe ser "`bearer`".

Y debe tener un `access_token`, con un string que contenga nuestro token de acceso.

    }

    /**
     * Test parsing of {@link KerberosConstants#AUTH_DATA_PAC} with an invalid token.
     * Expects a {@link PACDecodingException} to be thrown.
     */
    @Test
    void testParseAuthDataPacWithInvalidToken() {
        // GIVEN an invalid token for AUTH_DATA_PAC
        byte[] invalidToken = "invalid-pac-token".getBytes();

        // WHEN parsing the auth data
        // THEN a PACDecodingException should be thrown

    return encoded_jwt


async def get_current_user(token: Annotated[str, Depends(oauth2_scheme)]):
    credentials_exception = HTTPException(
        status_code=status.HTTP_401_UNAUTHORIZED,
        detail="Could not validate credentials",
        headers={"WWW-Authenticate": "Bearer"},
    )
    try:
        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
        username = payload.get("sub")

    /**
     * Constructs KerberosPacAuthData from token bytes.
     *
     * @param token the PAC token bytes
     * @param keys map of Kerberos keys indexed by key type
     * @throws PACDecodingException if PAC decoding fails
     */
    public KerberosPacAuthData(byte[] token, Map<Integer, KerberosKey> keys) throws PACDecodingException {
        this.pac = new Pac(token, keys);
    }

    /**
     * Returns the PAC object.

):
    if current_user.disabled:
        raise HTTPException(status_code=400, detail="Inactive user")
    return current_user


@app.post("/token")
async def login_for_access_token(
    form_data: Annotated[OAuth2PasswordRequestForm, Depends()],
) -> Token:
    user = authenticate_user(fake_users_db, form_data.username, form_data.password)
    if not user:

):
    if current_user.disabled:
        raise HTTPException(status_code=400, detail="Inactive user")
    return current_user


@app.post("/token")
async def login_for_access_token(
    form_data: Annotated[OAuth2PasswordRequestForm, Depends()],
) -> Token:
    user = authenticate_user(fake_users_db, form_data.username, form_data.password)
    if not user: