extern "C" {
#include <stdarg.h>

#include "windef.h"
#include "winbase.h"
#include "wine/list.h"
#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(steamclient);
}

#include "steam_defs.h"
#pragma push_macro("__cdecl")
#undef __cdecl
#pragma push_macro("strncpy")
#undef strncpy
#include "steamworks_sdk_153a/steam_api.h"
#include "steamworks_sdk_153a/steamnetworkingtypes.h"

#pragma pop_macro("__cdecl")
#pragma pop_macro("strncpy")
#include "steamclient_private.h"

extern "C" {
#define SDKVER_153a
#include "struct_converters.h"
#include "cb_converters.h"
#include "win_constructors.h"

#define SDK_VERSION 1531
#include "steamclient_manual_common.h"

#include <pthread.h>

struct msg_wrapper {
    struct winSteamNetworkingMessage_t_153a win_msg;
    struct SteamNetworkingMessage_t *lin_msg;

    struct list mapping_entry;
    void (*orig_FreeData)(SteamNetworkingMessage_t *);
    void (*orig_Release)(SteamNetworkingMessage_t *);
};

/***** manual struct converter for SteamNetworkingMessage_t *****/

static struct list msg_lin_to_win_mapping = LIST_INIT(msg_lin_to_win_mapping);
static pthread_mutex_t msg_lin_to_win_mapping_mutex = PTHREAD_MUTEX_INITIALIZER;

static struct msg_wrapper *msg_wrapper_from_lin(struct SteamNetworkingMessage_t *lin_msg)
{
    struct msg_wrapper *msg = NULL, *m;

    pthread_mutex_lock(&msg_lin_to_win_mapping_mutex);
    LIST_FOR_EACH_ENTRY(m, &msg_lin_to_win_mapping, struct msg_wrapper, mapping_entry)
    {
        if (m->lin_msg == lin_msg)
        {
            msg = m;
            break;
        }
    }
    pthread_mutex_unlock(&msg_lin_to_win_mapping_mutex);
    if (!msg)
        fprintf(stderr, "err:lsteamclient:msg_wrapper_from_lin Mapping for %p not found.\n", lin_msg);
    return msg;
}

static void __attribute__((ms_abi)) win_FreeData(struct winSteamNetworkingMessage_t_153a *win_msg)
{
    struct msg_wrapper *msg = CONTAINING_RECORD(win_msg, struct msg_wrapper, win_msg);
    TRACE("%p\n", msg);
    if(msg->orig_FreeData)
    {
        msg->lin_msg->m_pData = msg->win_msg.m_pData;
        msg->orig_FreeData(msg->lin_msg);
    }
}

static void __attribute__((ms_abi)) win_Release(struct winSteamNetworkingMessage_t_153a *win_msg)
{
    struct msg_wrapper *msg = CONTAINING_RECORD(win_msg, struct msg_wrapper, win_msg);

    TRACE("%p\n", msg);
    if (msg->orig_Release)
        msg->orig_Release(msg->lin_msg);
    pthread_mutex_lock(&msg_lin_to_win_mapping_mutex);
    list_remove(&msg->mapping_entry);
    pthread_mutex_unlock(&msg_lin_to_win_mapping_mutex);
    SecureZeroMemory(msg, sizeof(*msg));
    HeapFree(GetProcessHeap(), 0, msg);
}

static void lin_FreeData(struct SteamNetworkingMessage_t *lin_msg)
{
    struct msg_wrapper *msg = msg_wrapper_from_lin(lin_msg);
    struct callback_data cb_data;

    if (!msg)
        return;

    if (!msg->win_msg.m_pfnFreeData)
        return;

    if (!is_native_thread())
    {
        TRACE("msg %p, callback %p.\n", msg, msg->win_msg.m_pfnFreeData);
        ((void (__attribute__((ms_abi))*)(struct winSteamNetworkingMessage_t_153a *))msg->win_msg.m_pfnFreeData)(&msg->win_msg);
        return;
    }

    cb_data.type = STEAM_API_CALLBACK_ONE_PARAM;
    cb_data.func = (void *)msg->win_msg.m_pfnFreeData;
    cb_data.steam_api_callback_one_param.param = (void *)&msg->win_msg;
    execute_callback(&cb_data);
}

static void lin_Release(struct SteamNetworkingMessage_t *lin_msg)
{
    struct msg_wrapper *msg = msg_wrapper_from_lin(lin_msg);
    struct callback_data cb_data;

    if (!msg)
        return;

    if (!msg->win_msg.m_pfnRelease)
        return;

    if (!is_native_thread())
    {
        TRACE("msg %p, callback %p.\n", msg, msg->win_msg.m_pfnFreeData);
        ((void (__attribute__((ms_abi))*)(struct winSteamNetworkingMessage_t_153a *))msg->win_msg.m_pfnRelease)(&msg->win_msg);
        return;
    }

    cb_data.type = STEAM_API_CALLBACK_ONE_PARAM;
    cb_data.func = (void *)msg->win_msg.m_pfnRelease;
    cb_data.steam_api_callback_one_param.param = (void *)&msg->win_msg;
    execute_callback(&cb_data);
}

void *network_message_lin_to_win_(void *msg_, unsigned int version)
{
    struct SteamNetworkingMessage_t *lin_msg = (struct SteamNetworkingMessage_t *)msg_;
    struct msg_wrapper *msg;

    msg = (struct msg_wrapper *)HeapAlloc(GetProcessHeap(), 0, sizeof(*msg));

    TRACE("lin_msg %p, msg %p, m_cbSize %d.\n", lin_msg, msg, lin_msg->m_cbSize);

    msg->lin_msg = lin_msg;

    msg->win_msg.m_pData = msg->lin_msg->m_pData;
    msg->win_msg.m_cbSize = msg->lin_msg->m_cbSize;
    msg->win_msg.m_conn = msg->lin_msg->m_conn;
    msg->win_msg.m_identityPeer = msg->lin_msg->m_identityPeer;
    msg->win_msg.m_nConnUserData = msg->lin_msg->m_nConnUserData;
    msg->win_msg.m_usecTimeReceived= msg->lin_msg->m_usecTimeReceived;
    msg->win_msg.m_nMessageNumber = msg->lin_msg->m_nMessageNumber;
    msg->win_msg.m_pfnFreeData = (void*)win_FreeData;
    msg->win_msg.m_pfnRelease = (void*)win_Release;
    msg->win_msg.m_nChannel = msg->lin_msg->m_nChannel;
    if (version >= 1470)
    {
        msg->win_msg.m_nFlags = msg->lin_msg->m_nFlags;
        msg->win_msg.m_nUserData = msg->lin_msg->m_nUserData;
    }
    if (version >= 1530)
        msg->win_msg.m_idxLane = msg->lin_msg->m_idxLane;

    msg->orig_FreeData = msg->lin_msg->m_pfnFreeData;
    msg->lin_msg->m_pfnFreeData = lin_FreeData;
    msg->orig_Release = msg->lin_msg->m_pfnRelease;
    msg->lin_msg->m_pfnRelease = lin_Release;

    pthread_mutex_lock(&msg_lin_to_win_mapping_mutex);
    list_add_head(&msg_lin_to_win_mapping, &msg->mapping_entry);
    pthread_mutex_unlock(&msg_lin_to_win_mapping_mutex);

    return &msg->win_msg;
}

void lin_to_win_struct_SteamNetworkingMessage_t_(int n_messages, void **l, void **w, int max_messages, int version)
{
    int i;

    if(n_messages > 0)
        TRACE("%u %p %p\n", n_messages, l, w);

    for(i = 0; i < n_messages; ++i)
        w[i] = network_message_lin_to_win_(l[i], version);

    for(; i < max_messages; ++i)
        w[i] = NULL;
}

void *network_message_win_to_lin_(void *win_msg, unsigned int version)
{
    struct msg_wrapper *msg = CONTAINING_RECORD(win_msg, struct msg_wrapper, win_msg);
    SteamNetworkingMessage_t *lin_msg = msg->lin_msg;

    TRACE("msg %p, lin_msg %p.\n", msg, lin_msg);

    lin_msg->m_pData = msg->win_msg.m_pData;
    lin_msg->m_cbSize = msg->win_msg.m_cbSize;
    lin_msg->m_conn = msg->win_msg.m_conn;
    lin_msg->m_identityPeer = msg->win_msg.m_identityPeer;
    lin_msg->m_nConnUserData = msg->win_msg.m_nConnUserData;
    lin_msg->m_usecTimeReceived= msg->win_msg.m_usecTimeReceived;
    lin_msg->m_nMessageNumber = msg->win_msg.m_nMessageNumber;
    lin_msg->m_nChannel = msg->win_msg.m_nChannel;
    if (version >= 1470)
    {
        lin_msg->m_nFlags = msg->win_msg.m_nFlags;
        lin_msg->m_nUserData = msg->win_msg.m_nUserData;
    }
    if (version >= 1530)
        lin_msg->m_idxLane = msg->win_msg.m_idxLane;

    return lin_msg;
}

} /* extern "C" { */