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"""
Router for handling user authentication and issuing JWT tokens.
"""
from fastapi import APIRouter, Depends, HTTPException, status
from fastapi.security import OAuth2PasswordRequestForm
from fastapi.concurrency import run_in_threadpool
from sqlalchemy.orm import Session
from datetime import timedelta
from src import models
from src.database import get_db
from src.auth import create_access_token, authenticate_user
from src.config import settings
router = APIRouter(
prefix="/api",
tags=["Authentication Token"]
)
@router.post("/token", response_model=models.Token)
async def login_for_access_token(
form_data: OAuth2PasswordRequestForm = Depends(),
db: Session = Depends(get_db)
):
"""
Provides a JWT token for authenticated users.
This is the primary login endpoint. It takes a username and password
and returns an access token if the credentials are valid.
"""
user = authenticate_user(db, form_data.username, form_data.password)
if not user:
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Incorrect username or password",
headers={"WWW-Authenticate": "Bearer"},
)
access_token_expires = timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
access_token = create_access_token(
data={"sub": user.username, "role": user.role.value},
expires_delta=access_token_expires
)
return {"access_token": access_token, "token_type": "bearer"}
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