from __future__ import annotations

from fastapi import APIRouter, Depends, Query
import aiosqlite

import ingredients as ingredients_mod
from api.deps import get_db, get_household_from_slug


router = APIRouter(prefix="/households/{householdSlug}/ingredients", tags=["ingredients"])


@router.get(
    "/parse",
    response_model=ingredients_mod.Ingredient | list[ingredients_mod.Ingredient],
    summary="Parse an ingredient line or lines from a string",
)
async def parse_ingredient(
    line: str | None = Query(None, description="Single ingredient line to parse"),
    lines: list[str] | None = Query(None, description="Multiple ingredient lines to parse"),
    household=Depends(get_household_from_slug),
    conn: aiosqlite.Connection = Depends(get_db),
):
    # Batch mode takes precedence if provided
    if lines is not None:
        parsed = [ingredients_mod.parse_ingredient_from_nlp(item_line) for item_line in lines]
        matched = await ingredients_mod.match_existing_products(conn, parsed)
        return matched
    # Single line mode
    if line is None:
        from fastapi import HTTPException

        raise HTTPException(status_code=422, detail="Query parameter 'line' or 'lines' is required")
    parsed_one = ingredients_mod.parse_ingredient_from_nlp(line)
    matched_one = await ingredients_mod.match_existing_products(conn, [parsed_one])
    return matched_one[0]