# fastapi_crud/app/routers/user.py
from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.orm import Session
from fastapi.security import OAuth2PasswordRequestForm
from app import crud, schemas, database, auth
router = APIRouter()

@router.post("/users/", response_model=schemas.User)
def create_user(user: schemas.UserCreate, db: Session = Depends(database.get_db)):
    db_user = crud.get_user_by_username(db, username=user.username)
    if db_user:
        raise HTTPException(status_code=400, detail="Username already registered")
    return crud.create_user(db=db, user=user)

# status_code=status.HTTP_401_UNAUTHORIZED
@router.post("/token", response_model=dict)
async def login_for_access_token(form_data: OAuth2PasswordRequestForm = Depends(), db: Session = Depends(database.get_db)):
    user = auth.authenticate_user(db, form_data.username, form_data.password)
    if not user:
        raise HTTPException(
            status_code=401,
            detail="Incorrect username or password",
            headers={"WWW-Authenticate": "Bearer"},
        )
    access_token = auth.create_access_token(data={"sub": user.username})
    return {"access_token": access_token, "token_type": "bearer"}

@router.get("/users/me/", response_model=schemas.User)
async def read_users_me(current_user: schemas.User = Depends(auth.get_current_user)):
    return current_user