// Private RSSRV-to-DWM Session 0 routing protocol. Capability possession, not path publication, grants access.

#pragma once

#include <stdint.h>
#include <stdbool.h>
#include <ntlite/input.h>
#include <ntlite/status.h>

#define NTL_SESSION_DWM_PROTOCOL_VERSION 2u
#define NTL_SESSION_DWM_FLAG_NONE 0x00000000u

#define NTL_SESSION_DWM_OP_SET_KEYBOARD_FOCUS 1u
#define NTL_SESSION_DWM_OP_SET_POINTER_FOCUS  2u
#define NTL_SESSION_DWM_OP_SET_POINTER_CAPTURE 3u

#define NTL_SESSION_DWM_EVENT_OBSERVE_KEY   1u
#define NTL_SESSION_DWM_EVENT_OBSERVE_MOUSE 2u
#define NTL_SESSION_DWM_EVENT_DELIVER_KEY   3u
#define NTL_SESSION_DWM_EVENT_DELIVER_MOUSE 4u

typedef struct NTL_SESSION_DWM_REQUEST {
    uint32_t Size;
    uint32_t Version;
    uint32_t Operation;
    uint32_t Flags;
    bool Enabled;
    uint32_t Reserved[3];
} NTL_SESSION_DWM_REQUEST;

typedef struct NTL_SESSION_DWM_REPLY {
    uint32_t Size;
    uint32_t Version;
    uint32_t Operation;
    uint32_t Flags;
    KSTATUS Status;
    uint32_t Reserved[3];
} NTL_SESSION_DWM_REPLY;

typedef struct NTL_SESSION_DWM_EVENT {
    uint32_t Size;
    uint32_t Version;
    uint32_t Type;
    uint32_t Flags;
    int32_t PointerX;
    int32_t PointerY;
    INPUT_KEY_RECORD Key;
    INPUT_MOUSE_EVENT Mouse;
} NTL_SESSION_DWM_EVENT;

// RSSRV and DWM must agree on the private session-control payload.
_Static_assert(sizeof(NTL_SESSION_DWM_REQUEST) == 32u, "NTL_SESSION_DWM_REQUEST size changed");
_Static_assert(offsetof(NTL_SESSION_DWM_REQUEST, Enabled) == 16u, "NTL_SESSION_DWM_REQUEST Enabled offset changed");