use std::error::Error;

pub trait FileStore {
    type Err: Clone + Send + Error;

    fn is_stored(
        &self,
        name: &str,
    ) -> impl std::future::Future<Output = Result<bool, Self::Err>> + std::marker::Send;
    fn store(
        &self,
        name: &str,
        data: &[u8],
    ) -> impl std::future::Future<Output = Result<(), Self::Err>> + std::marker::Send;
    fn delete(
        &self,
        name: &str,
    ) -> impl std::future::Future<Output = Result<(), Self::Err>> + std::marker::Send;
}