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//! The native `fs` module for the [Rune Language].
//!
//! [Rune Language]: https://rune-rs.github.io
//!
//! ## Usage
//!
//! Add the following to your `Cargo.toml`:
//!
//! ```toml
//! rune-modules = { version = "0.13.2", features = ["fs"] }
//! ```
//!
//! Install it into your context:
//!
//! ```rust
//! let mut context = rune::Context::with_default_modules()?;
//! context.install(rune_modules::fs::module(true)?)?;
//! # Ok::<_, rune::support::Error>(())
//! ```
//!
//! Use it in Rune:
//!
//! ```rust,ignore
//! fn main() {
//!     let file = fs::read_to_string("file.txt").await?;
//!     println(`{file}`);
//! }
//! ```

use std::io;
use tokio::fs;
use rune::{Module, ContextError};

/// Construct the `fs` module.
pub fn module(_stdio: bool) -> Result<Module, ContextError> {
    let mut module = Module::with_crate("fs")?;
    module.function("read_to_string", read_to_string).build()?;
    Ok(module)
}

async fn read_to_string(path: String) -> io::Result<String> {
    fs::read_to_string(&path).await
}