/**
 * @file NCDInterfaceModule.h
 * @author Ambroz Bizjak <ambrop7@gmail.com>
 * 
 * @section LICENSE
 * 
 * This file is part of BadVPN.
 * 
 * BadVPN is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 * 
 * BadVPN is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef BADVPN_NCD_NCDINTERFACEMODULE_H
#define BADVPN_NCD_NCDINTERFACEMODULE_H

#include <stdarg.h>

#include <system/BReactor.h>
#include <system/BLog.h>
#include <ncdconfig/NCDConfig.h>

#include <generated/blog_channel_ncd.h>

#define NCDINTERFACEMODULE_EVENT_UP 1
#define NCDINTERFACEMODULE_EVENT_DOWN 2
#define NCDINTERFACEMODULE_EVENT_ERROR 3

typedef void (*NCDInterfaceModule_handler_event) (void *user, int event);

struct NCDInterfaceModuleNCD {
    BReactor *reactor;
    struct NCDConfig_interfaces *conf;
    NCDInterfaceModule_handler_event handler_event;
    void *user;
};

static void NCDInterfaceModuleNCD_Event (const struct NCDInterfaceModuleNCD *n, int event);
static void NCDInterfaceModuleNCD_Log (const struct NCDInterfaceModuleNCD *n, int level, const char *fmt, ...);

typedef void * (*NCDInterfaceModule_func_new) (struct NCDInterfaceModuleNCD params, int *initial_up_state);
typedef void (*NCDInterfaceModule_func_free) (void *o);

struct NCDInterfaceModule {
    const char *type;
    NCDInterfaceModule_func_new func_new;
    NCDInterfaceModule_func_free func_free;
};

static void * NCDInterfaceModule_New (const struct NCDInterfaceModule *m, struct NCDInterfaceModuleNCD params, int *initial_up_state);
static void NCDInterfaceModule_Free (const struct NCDInterfaceModule *m, void *o);

void NCDInterfaceModuleNCD_Event (const struct NCDInterfaceModuleNCD *n, int event)
{
    ASSERT(event == NCDINTERFACEMODULE_EVENT_UP || event == NCDINTERFACEMODULE_EVENT_DOWN ||
           event == NCDINTERFACEMODULE_EVENT_ERROR)
    
    n->handler_event(n->user, event);
    return;
}

void NCDInterfaceModuleNCD_Log (const struct NCDInterfaceModuleNCD *n, int level, const char *fmt, ...)
{
    va_list vl;
    va_start(vl, fmt);
    BLog_Append("interface %s: module: ", n->conf->name);
    BLog_LogToChannelVarArg(BLOG_CURRENT_CHANNEL, level, fmt, vl);
    va_end(vl);
}

void * NCDInterfaceModule_New (const struct NCDInterfaceModule *m, struct NCDInterfaceModuleNCD params, int *initial_up_state)
{
    return m->func_new(params, initial_up_state);
}

void NCDInterfaceModule_Free (const struct NCDInterfaceModule *m, void *o)
{
    m->func_free(o);
}

#endif