from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session
from core.database import get_db
from schemas.grocery import GroceryCreate, GrocerySchema
from helpers.grocery_helpers import create_grocery, get_grocery_by_name, validate_grocery_name, normalize_grocery_name

router = APIRouter()

@router.post("/create-grocery", response_model=GrocerySchema, status_code=status.HTTP_201_CREATED)
async def create_grocery_item(
    grocery: GroceryCreate,
    db: Session = Depends(get_db)
):
    if not validate_grocery_name(grocery.name):
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="Invalid grocery name"
        )

    normalized_name = normalize_grocery_name(grocery.name)
    
    existing_grocery = get_grocery_by_name(db, normalized_name)
    if existing_grocery:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="Grocery with this name already exists"
        )

    grocery_data = GroceryCreate(name=normalized_name)
    new_grocery = create_grocery(db, grocery_data)
    
    if not new_grocery:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="Failed to create grocery"
        )
    
    return new_grocery