from typing import Any

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

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

router = APIRouter()


@router.get("/", response_model=list[schemas.Publisher])
def read_publishers(
    db: Session = Depends(deps.get_db),
    skip: int = 0,
    limit: int = 100,
) -> Any:
    """
    Retrieve publishers.
    """
    publishers = crud.publisher.get_multi(db, skip=skip, limit=limit)
    return publishers


@router.post("/", response_model=schemas.Publisher)
def create_publisher(
    *,
    db: Session = Depends(deps.get_db),
    publisher_in: schemas.PublisherCreate,
) -> Any:
    """
    Create new publisher.
    """
    publisher = crud.publisher.get_by_name(db, name=publisher_in.name)
    if publisher:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="A publisher with this name already exists.",
        )
    publisher = crud.publisher.create(db, obj_in=publisher_in)
    return publisher


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


@router.put("/{publisher_id}", response_model=schemas.Publisher)
def update_publisher(
    *,
    db: Session = Depends(deps.get_db),
    publisher_id: int,
    publisher_in: schemas.PublisherUpdate,
) -> Any:
    """
    Update a publisher.
    """
    publisher = crud.publisher.get(db, id=publisher_id)
    if not publisher:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Publisher not found",
        )

    # Check if updating to an existing name
    if publisher_in.name and publisher_in.name != publisher.name:
        existing_publisher = crud.publisher.get_by_name(db, name=publisher_in.name)
        if existing_publisher:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail="A publisher with this name already exists.",
            )

    publisher = crud.publisher.update(db, db_obj=publisher, obj_in=publisher_in)
    return publisher


@router.delete("/{publisher_id}", response_model=schemas.Publisher)
def delete_publisher(
    *,
    db: Session = Depends(deps.get_db),
    publisher_id: int,
) -> Any:
    """
    Delete a publisher.
    """
    publisher = crud.publisher.get(db, id=publisher_id)
    if not publisher:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Publisher not found",
        )

    # Check if publisher has manga associated with it
    if publisher.manga_list:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="Cannot delete publisher with associated manga. Remove manga first.",
        )

    publisher = crud.publisher.remove(db, id=publisher_id)
    return publisher