from typing import Any, List, Optional

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

from app import crud, models, schemas
from app.api import deps

router = APIRouter()


@router.get("/", response_model=List[schemas.Product])
def read_products(
    db: Session = Depends(deps.get_db),
    skip: int = 0,
    limit: int = 100,
    name: Optional[str] = None,
    category_id: Optional[int] = None,
    min_price: Optional[float] = None,
    max_price: Optional[float] = None,
    in_stock: Optional[bool] = None,
) -> Any:
    """
    Retrieve products with filtering options.
    """
    filter_params = schemas.ProductFilterParams(
        name=name,
        category_id=category_id,
        min_price=min_price,
        max_price=max_price,
        in_stock=in_stock,
    )
    products = crud.product.search_products(
        db, filter_params=filter_params, skip=skip, limit=limit
    )
    return products


@router.post("/", response_model=schemas.Product)
def create_product(
    *,
    db: Session = Depends(deps.get_db),
    product_in: schemas.ProductCreate,
    current_user: models.User = Depends(deps.get_current_admin_user),
) -> Any:
    """
    Create new product (admin only).
    """
    product = crud.product.create(db, obj_in=product_in)
    return product


@router.get("/{id}", response_model=schemas.Product)
def read_product(
    *,
    db: Session = Depends(deps.get_db),
    id: int,
) -> Any:
    """
    Get product by ID.
    """
    product = crud.product.get(db, id=id)
    if not product:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Product not found",
        )
    return product


@router.put("/{id}", response_model=schemas.Product)
def update_product(
    *,
    db: Session = Depends(deps.get_db),
    id: int,
    product_in: schemas.ProductUpdate,
    current_user: models.User = Depends(deps.get_current_admin_user),
) -> Any:
    """
    Update a product (admin only).
    """
    product = crud.product.get(db, id=id)
    if not product:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Product not found",
        )
    product = crud.product.update(db, db_obj=product, obj_in=product_in)
    return product


@router.delete("/{id}", status_code=status.HTTP_204_NO_CONTENT, response_model=None)
def delete_product(
    *,
    db: Session = Depends(deps.get_db),
    id: int,
    current_user: models.User = Depends(deps.get_current_admin_user),
) -> None:
    """
    Delete a product (admin only).
    """
    product = crud.product.get(db, id=id)
    if not product:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Product not found",
        )
    crud.product.remove(db, id=id)