# node.capnp — Unified quicnprotochat node RPC interface.
#
# Combines Authentication and Delivery operations into a single service.
#
# ID generated with: capnp id
@0xd5ca5648a9cc1c28;

interface NodeService {
  # Upload a single-use KeyPackage for later retrieval by peers.
  # identityKey : Ed25519 public key bytes (32 bytes)
  # package     : TLS-encoded openmls KeyPackage
  uploadKeyPackage @0 (identityKey :Data, package :Data) -> (fingerprint :Data);

  # Fetch and atomically remove one KeyPackage for a given identity key.
  # Returns empty Data if none are stored.
  fetchKeyPackage  @1 (identityKey :Data) -> (package :Data);

  # Enqueue an opaque payload for delivery to a recipient.
  enqueue @2 (recipientKey :Data, payload :Data) -> ();

  # Fetch and drain all queued payloads for the recipient.
  fetch @3 (recipientKey :Data) -> (payloads :List(Data));

  # Long-poll: wait up to timeoutMs for new payloads, then drain queue.
  fetchWait @4 (recipientKey :Data, timeoutMs :UInt64) -> (payloads :List(Data));

  # Health probe for readiness/liveness.
  health @5 () -> (status :Text);
}