//! The `lb:fs` module provides utilities for interacting with the file system asynchronously.
//!
//! # Exports
//!
//! See [`lb_libfs`] for items exported by this module.
use luaffi::{cdef, metatype};
use std::io;
use tokio::fs;

/// Items exported by the `lb:fs` module.
///
/// This module can be obtained by calling `require` in Lua.
///
/// ```lua
/// local fs = require("lb:fs");
/// ```
#[cdef]
pub struct lb_libfs;

#[metatype]
impl lb_libfs {
    #[new]
    extern "Lua-C" fn new() -> Self {
        Self
    }

    pub extern "Lua" fn read(&self, path: string) -> string {
        self.__read(path)
    }

    async extern "Lua-C" fn __read(&self, path: &str) -> io::Result<Vec<u8>> {
        fs::read(path).await
    }
}