/*
* Copyright (C) 2010-2011 Mamadou Diop.
*
* Contact: Mamadou Diop <diopmamadou(at)doubango[dot]org>
*
* This file is part of Open Source Doubango Framework.
*
* DOUBANGO is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DOUBANGO 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 DOUBANGO.
*
*/

/**@file tsip_api_common.c
 * @brief Public common functions.
 *
 * @author Mamadou Diop <diopmamadou(at)doubango[dot]org>
 *

 */
#include "tinysip/api/tsip_api_common.h"

#include "tinysip/tsip_action.h"

#include "tsk_runnable.h"
#include "tsk_debug.h"

/* Internal functions */
extern tsip_action_t* _tsip_action_create(tsip_action_type_t type, va_list* app);
/* Local functions */
int _tsip_api_common_any(const tsip_ssession_handle_t *ss, tsip_action_type_t type, va_list* app);

/* internal function used to execute any user action
* can only handle session with dialogs */
int _tsip_api_common_any(const tsip_ssession_handle_t *ss, tsip_action_type_t type, va_list* app)
{
    int ret = -1;
    tsip_action_t* action;
    const tsip_ssession_t* _ss;

    /* Checks for validity */
    if(!(_ss = ss) || !_ss->stack) {
        TSK_DEBUG_ERROR("Invalid parameter.");
        return ret;
    }

    /* Checks if the stack has been started */
    if(!TSK_RUNNABLE(_ss->stack)->started) {
        TSK_DEBUG_ERROR("Stack not started.");
        return -2;
    }

    /* execute action */
    if((action = _tsip_action_create(type, app))) {
        ret = tsip_ssession_handle(_ss, action);
        TSK_OBJECT_SAFE_FREE(action);
    }
    return ret;
}

/**@ingroup tsip_action_group
* Rejects an incoming request.
* @param ss The SIP Session managing the dialog on which the request has been received.
* @param ... Any TSIP_ACTION_SET_*() macros. e.g. @ref TSIP_ACTION_SET_HEADER().
* MUST always ends with @ref TSIP_ACTION_SET_NULL().
* @retval Zero if succeed and non-zero error code otherwise.
*/
int tsip_api_common_reject(const tsip_ssession_handle_t *ss, ...)
{
    int ret = -1;
    va_list ap;

    va_start(ap, ss);
    if((ret = _tsip_api_common_any(ss, tsip_atype_reject, &ap))) {
        TSK_DEBUG_ERROR("Reject() failed.");
    }
    va_end(ap);

    return ret;
}

/**@ingroup tsip_action_group
* Hangs up a session.
* @param ss The SIP Session to hang-up. Will send an unREGISTER or unSUBSCRIBE or unPUBLISH or
* BYE etc depending on the type of the SIP dialog managed by the session.
* @param ... Any TSIP_ACTION_SET_*() macros. e.g. @ref TSIP_ACTION_SET_HEADER().
* MUST always ends with @ref TSIP_ACTION_SET_NULL().
* @retval Zero if succeed and non-zero error code otherwise.
*/
int tsip_api_common_hangup(const tsip_ssession_handle_t *ss, ...)
{
    int ret = -1;
    va_list ap;

    va_start(ap, ss);
    if((ret = _tsip_api_common_any(ss, tsip_atype_hangup, &ap))) {
        TSK_DEBUG_ERROR("Hang-up() failed.");
    }
    va_end(ap);

    return ret;
}

/**@ingroup tsip_action_group
* Accepts an incoming request.
* @param ss The SIP Session managing the dialog on which the request has been received.
* @param ... Any TSIP_ACTION_SET_*() macros. e.g. @ref TSIP_ACTION_SET_HEADER().
* MUST always ends with @ref TSIP_ACTION_SET_NULL().
* @retval Zero if succeed and non-zero error code otherwise.
*/
int tsip_api_common_accept(const tsip_ssession_handle_t *ss, ...)
{
    int ret = -1;
    va_list ap;

    va_start(ap, ss);
    if((ret = _tsip_api_common_any(ss, tsip_atype_accept, &ap))) {
        TSK_DEBUG_ERROR("Accept() failed.");
    }
    va_end(ap);

    return ret;
}