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

from app.auth.deps import CurrentUser, get_current_user
from app.database import get_db
from app.models import Department, DeviationCategory
from app.schemas.lookup import LookupsOut, NamedLookupOut

router = APIRouter(tags=["lookups"])


@router.get("/lookups", response_model=LookupsOut)
async def get_lookups(
    _: CurrentUser = Depends(get_current_user),
    db: AsyncSession = Depends(get_db),
) -> LookupsOut:
    """Active departments and deviation categories for form dropdowns."""
    departments = (
        (
            await db.execute(
                select(Department)
                .where(Department.is_active.is_(True))
                .order_by(Department.name)
            )
        )
        .scalars()
        .all()
    )
    categories = (
        (
            await db.execute(
                select(DeviationCategory)
                .where(DeviationCategory.is_active.is_(True))
                .order_by(DeviationCategory.name)
            )
        )
        .scalars()
        .all()
    )
    return LookupsOut(
        departments=[NamedLookupOut.model_validate(d) for d in departments],
        deviation_categories=[NamedLookupOut.model_validate(c) for c in categories],
    )