from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy import select
from typing import List

from app.database import get_db
from app.models.product import Brand
from app.schemas.product import BrandResponse

router = APIRouter()


@router.get("", response_model=List[BrandResponse])
async def get_brands(db: AsyncSession = Depends(get_db)):
    result = await db.execute(
        select(Brand).order_by(Brand.name.asc())
    )
    brands = result.scalars().all()
    return [BrandResponse.model_validate(b) for b in brands]


@router.get("/{slug}", response_model=BrandResponse)
async def get_brand(slug: str, db: AsyncSession = Depends(get_db)):
    result = await db.execute(
        select(Brand).where(Brand.slug == slug)
    )
    brand = result.scalar_one_or_none()

    if not brand:
        raise HTTPException(status_code=404, detail="Brand not found")

    return BrandResponse.model_validate(brand)