Artifact [ba7699d115]

Artifact ba7699d115356a1eefb5b776487ae4f8242c57ae7c635f5d59aec73f0323c6f4:

• File iroh-sidecar/src/endpoint.rs — part of check-in [eda7960b81] at 2026-04-23 19:23:42 on branch trunk — rename module to github.com/danmestas/EdgeSync

  Fix the case-sensitive module path to match the actual GitHub repo URL (danmestas/EdgeSync). Remove tracked leaf/leaf binary and ignore .claude/skills/ scratchpad dirs. (user: [email protected], size: 1417) [annotate] [blame] [check-ins using] [more...]

use iroh::{Endpoint, SecretKey, endpoint::presets};
use std::path::Path;
use tokio::fs;

/// Load or generate an Ed25519 keypair, then bind an iroh Endpoint.
pub async fn create_endpoint(
    key_path: &Path,
    alpns: &[Vec<u8>],
) -> anyhow::Result<(Endpoint, String)> {
    let secret_key = load_or_generate_key(key_path).await?;
    let endpoint_id = secret_key.public().to_string();

    let endpoint = Endpoint::builder(presets::N0)
        .secret_key(secret_key)
        .alpns(alpns.to_vec())
        .bind()
        .await?;

    tracing::info!(%endpoint_id, "iroh endpoint bound");
    Ok((endpoint, endpoint_id))
}

async fn load_or_generate_key(path: &Path) -> anyhow::Result<SecretKey> {
    if path.exists() {
        let bytes = fs::read(path).await?;
        // Expect exactly 32 raw bytes (Ed25519 secret scalar).
        let arr: [u8; 32] = bytes
            .try_into()
            .map_err(|_| anyhow::anyhow!("key file is not 32 bytes"))?;
        let key = SecretKey::from_bytes(&arr);
        tracing::info!("loaded existing keypair from {}", path.display());
        Ok(key)
    } else {
        let key = SecretKey::generate(&mut rand::rng());
        if let Some(parent) = path.parent() {
            fs::create_dir_all(parent).await?;
        }
        fs::write(path, key.to_bytes()).await?;
        tracing::info!("generated new keypair at {}", path.display());
        Ok(key)
    }
}