from typing import Any, List, Optional

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

from app import crud, schemas
from app.db.session import get_db

router = APIRouter()


@router.get("/", response_model=List[schemas.Item])
def read_items(
    db: Session = Depends(get_db),
    skip: int = 0,
    limit: int = 100,
    title: Optional[str] = None,
) -> Any:
    """
    Retrieve items.
    """
    if title:
        items = crud.item.get_by_title(db, title=title)
    else:
        items = crud.item.get_multi(db, skip=skip, limit=limit)
    return items


@router.post("/", response_model=schemas.Item, status_code=status.HTTP_201_CREATED)
def create_item(*, db: Session = Depends(get_db), item_in: schemas.ItemCreate) -> Any:
    """
    Create new item.
    """
    item = crud.item.create(db=db, obj_in=item_in)
    return item


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


@router.put("/{id}", response_model=schemas.Item)
def update_item(
    *, db: Session = Depends(get_db), id: int, item_in: schemas.ItemUpdate
) -> Any:
    """
    Update an item.
    """
    item = crud.item.get(db=db, id=id)
    if not item:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND, detail="Item not found"
        )
    item = crud.item.update(db=db, db_obj=item, obj_in=item_in)
    return item


@router.delete("/{id}", status_code=status.HTTP_204_NO_CONTENT, response_model=None)
def delete_item(*, db: Session = Depends(get_db), id: int) -> Any:
    """
    Delete an item.
    """
    item = crud.item.get(db=db, id=id)
    if not item:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND, detail="Item not found"
        )
    crud.item.remove(db=db, id=id)
    return None