//! Production backend: drives a real FSKit mount through [`fskit_rs::mount`].

use std::path::PathBuf;

use async_trait::async_trait;
use fskit_rs::session::Session;
use fskit_rs::{Filesystem, MountOptions};

use super::{Backend, Result};

#[derive(Debug)]
pub struct ProdBackend {
    mount_point: PathBuf,
    // Held for its `Drop` impl, which unmounts and stops the socket.
    _session: Session,
}

#[async_trait]
impl Backend for ProdBackend {
    async fn start<FS>(fs: FS, opts: MountOptions) -> Result<Self>
    where
        FS: Filesystem + Send + Sync + Clone + 'static,
    {
        let mount_point = opts.mount_point.clone();
        let session = fskit_rs::mount(fs, opts).await?;
        Ok(Self { mount_point, _session: session })
    }

    fn describe(&self) -> String {
        format!("FSKit mount at {}", self.mount_point.display())
    }
}