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

from app.auth import get_current_admin
from app.database import get_db
from app import models, schemas

router = APIRouter(prefix="/api/brand", tags=["Brand"])


def _get_or_create_brand(db: Session) -> models.Brand:
    brand = db.get(models.Brand, 1)
    if not brand:
        brand = models.Brand(id=1)
        db.add(brand)
        db.commit()
        db.refresh(brand)
    return brand


@router.get("", response_model=schemas.BrandOut)
def get_brand(db: Session = Depends(get_db)):
    """اطلاعات کلی برند (نام، لوگو، تلفن، ایمیل، آدرس و...) — یک رکورد ثابت."""
    return _get_or_create_brand(db)


@router.put("", response_model=schemas.BrandOut)
def update_brand(
    payload: schemas.BrandUpdate,
    db: Session = Depends(get_db),
    _admin=Depends(get_current_admin),
):
    brand = _get_or_create_brand(db)
    for field, value in payload.model_dump(exclude_unset=True).items():
        setattr(brand, field, value)
    db.commit()
    db.refresh(brand)
    return brand