from typing import List, Optional

from app.models.post import Post


def list_posts() -> List[Post]:
    # get all posts from database
    pass


def get_post(post_id: int) -> Optional[Post]:
    # get single post
    pass


def create_post(name: str, description: str | None, price: float) -> Post:
    # create a post
    pass


def update_post(post_id: int, **fields) -> Optional[Post]:
    # update post
    pass


def delete_post(post_id: int) -> bool:
    # delete post
    pass