Build With Authorship Verification

use cpop_engine::{Session, Config, Evidence};

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    // Initialize a session with default Ed25519 keys
    let config = Config::builder()
        .algorithm(cpop_engine::Algorithm::Ed25519)
        .build()?;
    let mut session = Session::new(config)?;

    // Record writing events as they happen
    session.record_keystroke('H', 0)?;
    session.record_keystroke('e', 42)?;
    session.record_keystroke('l', 85)?;
    session.record_keystroke('l', 127)?;
    session.record_keystroke('o', 170)?;

    // Create a signed checkpoint
    let checkpoint = session.checkpoint()?;
    println!("Checkpoint hash: {}", checkpoint.hash_hex());

    // Export the full evidence packet (CBOR-encoded)
    let evidence: Evidence = session.export()?;
    let cbor_bytes = evidence.to_cbor()?;

    // Verify the packet independently
    assert!(Evidence::verify(&cbor_bytes)?);
    println!("Evidence verified. {} bytes.", cbor_bytes.len());

    Ok(())
}