use std::{fs::File, io::Write, path::PathBuf};

use bft_json_crdt::keypair::{make_keypair, KeyPair};
use pem::Pem;

/// Makes an Ed25519 keypair and returns the public and private keys as a PEM-encoded string.
pub(crate) fn setup() -> String {
    let keys = make_keypair();

    let public_pem = Pem::new("PUBLIC", keys.public().to_string());
    let private_pem = Pem::new("PRIVATE", keys.private().to_string());
    pem::encode_many(&[public_pem, private_pem])
}

/// Writes a PEM-encoded string to a file at key_path.
pub(crate) fn write(key_path: PathBuf, pem: String) -> Result<(), std::io::Error> {
    let mut file = File::create(key_path)?;
    file.write(pem.to_string().as_bytes())?;
    Ok(())
}