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from typing import Annotated
from urllib.parse import urlencode
from fastapi import APIRouter, Depends, HTTPException, Response, status
from fastapi.responses import HTMLResponse, RedirectResponse
from jb.api.auth import (
SESSION_COOKIE_NAME,
create_session,
get_authenticated_user,
)
from jb.api.magic_token import (
consume_amt_account_link_token,
consume_magic_token,
create_amt_account_link_token,
create_magic_token,
)
from jb.config import settings
from jb.decorators import LOG
from jb.dependencies import get_gr_api_manager
from jb.managers.email_manager import (
get_or_create_contact,
send_amt_link_email,
send_login_email,
)
from jb.managers.gr_api import GRApiManager
from jb.models.auth import (
AccountLogin,
AmtAccountLink,
MagicLinkExchangeRequest,
User,
)
from jb.settings import BASE_HTML
auth_router = APIRouter(prefix="/auth", tags=["Auth"])
@auth_router.post("/magic-link/request")
def request_magic_link(body: AccountLogin) -> dict[str, str]:
"""Create a magic link."""
email = str(body.email)
token = create_magic_token(user_email=email)
if settings.debug:
query = urlencode({"token": token})
return {"magic_link": f"{settings.base_url}auth/magic-link/?{query}"}
send_login_email(email=email, magic_token=token)
return {"detail": "Link sent. Check your inbox and follow the link to log in."}
@auth_router.get("/magic-link/", response_class=HTMLResponse, include_in_schema=False)
def magic_link_landing_page(
gr_api: Annotated[GRApiManager, Depends(get_gr_api_manager)],
token: str | None = None,
) -> Response:
"""Serve the SPA without redeeming the token; email prefetches are harmless."""
if settings.debug:
if token is None:
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail="token is required",
)
response = RedirectResponse(url="/", status_code=status.HTTP_303_SEE_OTHER)
_exchange_magic_link(token, response, gr_api)
return response
return HTMLResponse(
BASE_HTML,
headers={
"Cache-Control": "no-store",
"Referrer-Policy": "no-referrer",
"X-Robots-Tag": "noindex, nofollow",
},
)
@auth_router.post("/magic-link/exchange", status_code=status.HTTP_204_NO_CONTENT)
def exchange_magic_link(
body: MagicLinkExchangeRequest,
response: Response,
gr_api: Annotated[GRApiManager, Depends(get_gr_api_manager)],
) -> None:
"""Exchange a magic link only after its landing page makes an explicit POST."""
_exchange_magic_link(body.token, response, gr_api)
def _exchange_magic_link(token: str, response: Response, gr_api: GRApiManager) -> None:
user_email = consume_magic_token(token)
user = gr_api.ensure_user_exists(User.model_validate({"email": user_email}))
response.set_cookie(
key=SESSION_COOKIE_NAME,
value=create_session(user.product_user_id),
max_age=settings.session_token_ttl_seconds,
httponly=True,
secure=not settings.debug,
samesite="lax",
path="/",
)
@auth_router.post("/link-amt/request")
def link_amt_account(body: AmtAccountLink) -> dict[str, str]:
"""Link an AMT account and login."""
email = str(body.email)
amt_worker_id = body.amt_worker_id
# TODO! Prevent a user that's already transitioned their account, from being
# TODO! able to continuously create this special link token.
# TODO! Max Notes: this seems to be handled within the gr-api, and that
# TODO! can raise, the following line would / should fail if needed.
token = create_amt_account_link_token(email=email, amt_worker_id=amt_worker_id)
if settings.debug:
query = urlencode({"token": token})
return {"magic_link": f"{settings.base_url}auth/link-amt/?{query}"}
send_amt_link_email(email=email, magic_token=token)
return {}
@auth_router.get("/debug/", response_class=HTMLResponse, include_in_schema=False)
def link_amt_account_landing_page(
gr_api: Annotated[GRApiManager, Depends(get_gr_api_manager)],
token: str | None = None,
) -> HTMLResponse:
"""Serve the account-link SPA without consuming the one-time token."""
# TODO! Try catch any of this, and if it fails, show the user a
# TODO! failed HTML page. As of now, it shows them a failed JSON response.
if settings.debug:
if token is None:
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail="token is required",
)
_response = RedirectResponse(url="/", status_code=status.HTTP_303_SEE_OTHER)
_exchange_amt_account_link(token=token, response=_response, gr_api=gr_api)
return HTMLResponse(
BASE_HTML,
headers={
"Cache-Control": "no-store",
"Referrer-Policy": "no-referrer",
"X-Robots-Tag": "noindex, nofollow",
},
)
@auth_router.post("/link-amt/exchange", status_code=status.HTTP_204_NO_CONTENT)
def exchange_amt_account_link(
body: MagicLinkExchangeRequest,
response: Response,
gr_api: Annotated[GRApiManager, Depends(get_gr_api_manager)],
) -> None:
"""Validate the email link, then transition the bound AMT account."""
try:
_exchange_amt_account_link(body.token, response, gr_api)
except ValueError as e:
LOG.error(f"Failed to exchange AMT account link: {e}")
raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(e))
def _exchange_amt_account_link(token: str, response: Response, gr_api: GRApiManager):
token_data = consume_amt_account_link_token(token)
email = token_data.email
amt_worker_id = token_data.amt_worker_id
user = User(email=email)
user = gr_api.transition_user_from_amt(user=user, amt_worker_id=amt_worker_id)
# In Mautic, associate the email with the worker ID (AFTER the user has transitioned)
get_or_create_contact(email=email, amt_worker_id=amt_worker_id)
session_token = create_session(user.product_user_id)
response.set_cookie(
key=SESSION_COOKIE_NAME,
value=session_token,
max_age=settings.session_token_ttl_seconds,
httponly=True,
secure=not settings.debug,
samesite="lax",
path="/",
)
@auth_router.get("/session", response_model=User)
def get_session(
user: Annotated[User, Depends(get_authenticated_user)],
) -> User:
return user
@auth_router.delete("/session", status_code=status.HTTP_204_NO_CONTENT)
def delete_session(
response: Response,
) -> None:
# Logout is idempotent so clients can always discard their local token.
# JWT sessions are stateless, so logout discards the browser cookie. A token
# copied elsewhere remains valid until its short, configured expiration.
response.delete_cookie(key=SESSION_COOKIE_NAME, path="/")
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