//! Core suite of tests which should work on all supported macOS platforms.
//!
//! This suite is mainly intended to run in CI. See `tests/interactive.rs`
//! for notes on how to run the full test suite.

use keychain_services::*;

const TEST_MESSAGE: &[u8] = b"Embed confidential information in items that you store in a keychain";

/// Soft ECDSA key support
#[test]
fn generate_and_sign_with_generate_ecdsa_keys() {
    let acl =
        AccessControl::create_with_flags(AttrAccessible::WhenUnlocked, Default::default()).unwrap();

    let generate_params =
        KeyPairGenerateParams::new(AttrKeyType::EcSecPrimeRandom, 256).access_control(&acl);

    let keypair = KeyPair::generate(generate_params).unwrap();

    let public_key_bytes = keypair.public_key.to_external_representation().unwrap();

    let signature = keypair
        .private_key
        .sign(KeyAlgorithm::ECDSASignatureMessageX962SHA256, TEST_MESSAGE)
        .unwrap();

    ring::signature::verify(
        &ring::signature::ECDSA_P256_SHA256_ASN1,
        untrusted::Input::from(&public_key_bytes),
        untrusted::Input::from(TEST_MESSAGE),
        untrusted::Input::from(signature.as_ref()),
    )
    .unwrap();

    let res = keypair.public_key.verify(TEST_MESSAGE, &signature);
    assert!(res.is_ok());
    assert!(res.unwrap());
    let res = keypair.public_key.verify(&[0u8, 0u8], &signature);
    assert!(res.is_err());
}

/// Soft ECDSA key support with new functions
#[test]
fn generate_and_sign_with_create_ecdsa_keys() {
    let acl =
        AccessControl::create_with_flags(AttrAccessible::WhenUnlocked, Default::default()).unwrap();

    let generate_params =
        KeyPairGenerateParams::new(AttrKeyType::EcSecPrimeRandom, 256).access_control(&acl);

    let keypair = KeyPair::create(generate_params).unwrap();

    let public_key_bytes = keypair.public_key.to_external_representation().unwrap();

    let signature = keypair
        .private_key
        .sign(KeyAlgorithm::ECDSASignatureMessageX962SHA256, TEST_MESSAGE)
        .unwrap();

    ring::signature::verify(
        &ring::signature::ECDSA_P256_SHA256_ASN1,
        untrusted::Input::from(&public_key_bytes),
        untrusted::Input::from(TEST_MESSAGE),
        untrusted::Input::from(signature.as_ref()),
    )
    .unwrap();

    let res = keypair.public_key.verify(TEST_MESSAGE, &signature);
    assert!(res.is_ok());
    assert!(res.unwrap());
    let res = keypair.public_key.verify(&[0u8, 0u8], &signature);
    assert!(res.is_err());
}

/// Soft ECDSA key create from external representation
#[test]
fn export_and_import_ecdsa_keys() {
    let acl =
        AccessControl::create_with_flags(AttrAccessible::WhenUnlocked, Default::default()).unwrap();

    let generate_params =
        KeyPairGenerateParams::new(AttrKeyType::EcSecPrimeRandom, 256).access_control(&acl);

    let keypair = KeyPair::create(generate_params).unwrap();

    let public_key_bytes = keypair.public_key.to_external_representation().unwrap();

    let restore_params = RestoreKeyParams {
        key_type: AttrKeyType::EcSecPrimeRandom,
        key_data: public_key_bytes.clone(),
        key_class: AttrKeyClass::Public,
    };

    let res = Key::from_external_representation(restore_params);

    assert!(res.is_ok());
    let public_key = res.unwrap();
    let pub1bytes = public_key.application_tag().map(|t| t.as_bytes().to_vec());
    let pub2bytes = keypair
        .public_key
        .application_tag()
        .map(|t| t.as_bytes().to_vec());
    assert_eq!(pub1bytes, pub2bytes);

    let restore_params = RestoreKeyParams {
        key_type: AttrKeyType::EcSecPrimeRandom,
        key_data: public_key_bytes,
        key_class: AttrKeyClass::Private,
    };

    let res = Key::from_external_representation(restore_params);
    assert!(res.is_err());
}

#[test]
fn generate_and_use_rsa_keys() {
    let acl =
        AccessControl::create_with_flags(AttrAccessible::WhenUnlocked, Default::default()).unwrap();

    let generate_params = KeyPairGenerateParams::new(AttrKeyType::Rsa, 2048).access_control(&acl);

    let keypair = KeyPair::create(generate_params).unwrap();

    let signature = keypair
        .private_key
        .sign(KeyAlgorithm::RSASignatureMessagePSSSHA256, TEST_MESSAGE)
        .unwrap();

    let public_key_bytes = keypair.public_key.to_external_representation().unwrap();

    let res = ring::signature::verify(
        &ring::signature::RSA_PSS_2048_8192_SHA256,
        untrusted::Input::from(&public_key_bytes),
        untrusted::Input::from(TEST_MESSAGE),
        untrusted::Input::from(signature.as_ref()),
    );
    assert!(res.is_ok());

    let res = keypair.public_key.verify(TEST_MESSAGE, &signature);
    assert!(res.is_ok());
    assert!(res.unwrap());
    let res = keypair.public_key.verify(&[0u8, 0u8], &signature);
    assert!(res.is_err());
}

#[test]
fn encrypt_and_decrypt_rsa_keys() {
    let acl =
        AccessControl::create_with_flags(AttrAccessible::WhenUnlocked, Default::default()).unwrap();

    let generate_params = KeyPairGenerateParams::new(AttrKeyType::Rsa, 2048).access_control(&acl);

    let keypair = KeyPair::create(generate_params).unwrap();

    let ciphertext = keypair
        .public_key
        .encrypt(KeyAlgorithm::RSAEncryptionOAEPSHA256, TEST_MESSAGE)
        .unwrap();

    let res = keypair.private_key.decrypt(ciphertext);
    assert!(res.is_ok());
    assert_eq!(res.unwrap(), TEST_MESSAGE);
    let ciphertext = Ciphertext::new(KeyAlgorithm::RSAEncryptionOAEPSHA256, vec![0u8, 0u8]);
    let res = keypair.private_key.decrypt(ciphertext);
    assert!(res.is_err());

    assert!(!keypair
        .private_key
        .is_supported(KeyOperation::Encrypt, KeyAlgorithm::RSAEncryptionOAEPSHA256));
    let res = keypair
        .private_key
        .encrypt(KeyAlgorithm::RSAEncryptionOAEPSHA256, TEST_MESSAGE);
    assert!(res.is_err());
}