"""
/dn endpoints.
"""


from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session

from ..db import Connection
from ..db.schemas import DistinguishedName, DistinguishedNameCreate, User
from ._common import Responses, get_current_user_if_admin_or_self

router = APIRouter(prefix="/dn")


@router.post(
    "",
    responses={
        status.HTTP_200_OK: Responses.OK,
        status.HTTP_400_BAD_REQUEST: Responses.NOT_INSTALLED,
        status.HTTP_401_UNAUTHORIZED: Responses.NEEDS_USER,
        status.HTTP_403_FORBIDDEN: Responses.NEEDS_ADMIN,
        status.HTTP_404_NOT_FOUND: Responses.ENTRY_DOESNT_EXIST,
        status.HTTP_409_CONFLICT: Responses.ENTRY_EXISTS,
    },
)
async def add_distinguished_name(
    user_name: str,
    distinguished_name: DistinguishedNameCreate,
    _: User = Depends(get_current_user_if_admin_or_self),
    db: Session | None = Depends(Connection.get),
):
    """
    POST ./: Create a new distinguished name in the database.
    """

    owner = User.from_db(
        db=db,
        name=user_name,
    )

    # fail if owner doesn't exist
    if owner is None:
        raise HTTPException(status_code=status.HTTP_409_CONFLICT)

    # actually create the new user
    new_dn = DistinguishedName.create(
        db=db,
        dn=distinguished_name,
        owner=owner,
    )

    # fail if creation was unsuccessful
    if new_dn is None:
        raise HTTPException(status_code=status.HTTP_409_CONFLICT)

    # return the created user on success
    return new_dn