include "auth/auth.fbs";
include "control/control.fbs";
include "stream/stream.fbs";
include "mem/mem.fbs";
include "compacted.fbs";

namespace hmmmm;

// ── Client → Server ──────────────────────────────────────────────────────────

union ClientPayload {
    hmmmm.auth.AuthRequest,
    hmmmm.ctrl.CtrlClientMessage,
    hmmmm.stream.StreamClientMessage,
    hmmmm.mem.MemClientMessage,
}

// Every frame sent by the client is a ClientMessage.
// nonce: client-chosen identifier echoed in the server response.
//        Use 0xFFFFFFFFFFFFFFFF for fire-and-forget messages (no reply expected).
table ClientMessage {
    nonce:   uint64;
    payload: ClientPayload;
}

// ── Server → Client ──────────────────────────────────────────────────────────

union ServerPayload {
    hmmmm.auth.AuthResponse,
    hmmmm.ctrl.CtrlServerMessage,
    hmmmm.stream.StreamServerMessage,
    hmmmm.mem.MemServerMessage,
    CompactedMessage,
}

// Every frame sent by the server is a ServerMessage.
// nonce: echoes the triggering ClientMessage nonce.
//        0xFFFFFFFFFFFFFFFF for unsolicited notifications (state changes, stream pushes).
table ServerMessage {
    nonce:   uint64;
    payload: ServerPayload;
}

root_type ClientMessage;