use clap::Args;
use std::path::PathBuf;
use std::sync::Arc;

use crate::vfs::{local_fs::LocalFs, nfs_server::{NfsVfsServer, NfsConfig}};

#[derive(Debug, Args)]
pub struct NfsServerCommand {
    /// Port to listen on (default: 2049)
    #[arg(short, long, default_value = "2049")]
    port: u16,
    
    /// Root directory to export
    #[arg(short, long, default_value = "/tmp/nfs_export")]
    root: PathBuf,
    
    /// Share name (export name)
    #[arg(short, long, default_value = "export")]
    share_name: String,
}

pub async fn run_nfs_server(cmd: NfsServerCommand) -> anyhow::Result<()> {
    println!("Starting NFS server on port {}", cmd.port);
    println!("Export directory: {}", cmd.root.display());
    println!("Share name: {}", cmd.share_name);
    
    if !cmd.root.exists() {
        std::fs::create_dir_all(&cmd.root)?;
        println!("Created export directory: {}", cmd.root.display());
    }
    
    let vfs = Arc::new(LocalFs::new());
    let server = NfsVfsServer::new(vfs, cmd.root.clone()).with_port(cmd.port);
    
    println!("NFS server starting...");
    server.start(cmd.port).await?;
    
    println!("NFS server stopped");
    
    Ok(())
}