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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
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.dependencies import get_gr_api_manager
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_mock_magic_link(body: AccountLogin) -> dict[str, str]:
"""Create a magic link without sending email in development."""
if not settings.debug:
raise HTTPException(status_code=status.HTTP_404_NOT_FOUND)
# todo: send email here
user = User(email=body.email)
token = create_magic_token(str(user.email))
query = urlencode({"token": token})
return {"magic_link": f"/auth/magic-link/?{query}"}
@auth_router.post("/link-amt/request")
def link_amt_account(body: AmtAccountLink) -> dict[str, str]:
"""Create a mock AMT account-link email in development."""
if not settings.debug:
raise HTTPException(status_code=status.HTTP_404_NOT_FOUND)
# TODO: Derive amt_worker_id from a server-validated AMT assignment and
# send this link by email instead of returning it.
user = User(email=body.email)
token = create_amt_account_link_token(user, body.amt_worker_id)
query = urlencode({"token": token})
return {"magic_link": f"/auth/link-amt/?{query}"}
@auth_router.get("/magic-link/", response_class=HTMLResponse, include_in_schema=False)
def magic_link_landing_page() -> HTMLResponse:
"""Serve the SPA without redeeming the token; email prefetches are harmless."""
return HTMLResponse(
BASE_HTML,
headers={
"Cache-Control": "no-store",
"Referrer-Policy": "no-referrer",
"X-Robots-Tag": "noindex, nofollow",
},
)
@auth_router.get("/link-amt/", response_class=HTMLResponse, include_in_schema=False)
def link_amt_account_landing_page() -> HTMLResponse:
"""Serve the account-link SPA without consuming the one-time token."""
return magic_link_landing_page()
@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."""
user_email = consume_magic_token(body.token)
user = User.model_validate({"email": user_email})
# hit thl to make sure this user exists
user = gr_api.ensure_user_exists(user)
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.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."""
token_data = consume_amt_account_link_token(body.token)
user = User(email=token_data.email)
user = gr_api.transition_user_from_amt(user, token_data.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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