use bytes::Bytes;
use lanspread_proto::{Message, StreamInstallFrame};

#[test]
fn file_chunks_encode_raw_bytes() {
    let bytes = Bytes::from_static(&[0, 1, 2, 255]);
    let encoded = StreamInstallFrame::FileChunk {
        bytes: bytes.clone(),
    }
    .encode();

    assert_eq!(&encoded[..], &[1, 0, 1, 2, 255]);
    assert_eq!(
        StreamInstallFrame::decode(encoded),
        StreamInstallFrame::FileChunk { bytes }
    );
}

#[test]
fn control_frames_are_tagged_json() {
    let frame = StreamInstallFrame::FileBegin {
        relative_path: "bin/game.exe".to_string(),
        size: 42,
        crc32: 0x38B4_88A7,
    };
    let encoded = frame.encode();

    assert_eq!(encoded[0], 0);
    assert_eq!(StreamInstallFrame::decode(encoded), frame);
}

#[test]
fn empty_frames_decode_as_errors() {
    match StreamInstallFrame::decode(Bytes::new()) {
        StreamInstallFrame::Error { message } => {
            assert!(message.contains("empty"));
        }
        other => {
            panic!("expected error frame, got {other:?}");
        }
    }
}