use ed25519_dalek::{Signer, SigningKey};

use ledger_core::EntryUnsigned;

fn hex(bytes: &[u8]) -> String {
    bytes.iter().map(|b| format!("{:02x}", b)).collect()
}

#[test]
fn golden_vectors_v0_signing_message_and_hashes() {
    let seed = [0u8; 32];
    let signing_key = SigningKey::from_bytes(&seed);
    let author_pubkey = signing_key.verifying_key().to_bytes();

    let unsigned = EntryUnsigned {
        prev_hash: [0u8; 32],
        ts_ms: 1,
        namespace: "law".to_string(),
        payload_cbor: vec![0x65, b'h', b'e', b'l', b'l', b'o'],
        author_pubkey,
    };

    let msg = unsigned.signing_message();
    let sig = signing_key.sign(&msg).to_bytes();
    let entry = unsigned.to_entry(sig);

    assert_eq!(
        hex(&author_pubkey),
        "3b6a27bcceb6a42d62a3a8d02a6f0d73653215771de243a63ac048a18b59da29"
    );
    assert_eq!(
        hex(&entry.payload_hash()),
        "90eeb71f0d4b768a5d449e30035beb7ffccd75d228e5b38e8e9cbfaa01ddfae9"
    );
    assert_eq!(
        hex(&msg),
        "434c763000000000000000000000000000000000000000000000000000000000000000000100000000000000030000006c617790eeb71f0d4b768a5d449e30035beb7ffccd75d228e5b38e8e9cbfaa01ddfae93b6a27bcceb6a42d62a3a8d02a6f0d73653215771de243a63ac048a18b59da29"
    );
    assert_eq!(
        hex(&entry.sig),
        "03c91ecb5ab44a4329c12c1e789d22d685b81a0d16483d869d88fa24dd2c20a8b786066d12c8a238c88cea0b969f1c707df305b1edc56238d5d6166ecf986e05"
    );
    assert_eq!(
        hex(&entry.hash()),
        "ce13e5272d6705d9cbf2e261d2b9862abb187f737bea6fe3542e8680d689cc8e"
    );
}