/*
 * Copyright (C) 2019-2022 by Sukchan Lee <acetcom@gmail.com>
 *
 * This file is part of Open5GS.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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, see <https://www.gnu.org/licenses/>.
 */

#ifndef SCP_CONTEXT_H
#define SCP_CONTEXT_H

#include "ogs-sbi.h"
#include "ogs-app.h"

#include "timer.h"
#include "scp-sm.h"

#ifdef __cplusplus
extern "C" {
#endif

extern int __scp_log_domain;

#undef OGS_LOG_DOMAIN
#define OGS_LOG_DOMAIN __scp_log_domain

typedef struct scp_context_s {
    ogs_list_t          conn_list;
} scp_context_t;

#define SCP_NF_INSTANCE_CLEAR(_cAUSE, _nFInstance) \
    do { \
        ogs_assert(_nFInstance); \
        if ((_nFInstance)->reference_count == 1) { \
            ogs_info("[%s] (%s) NF removed", (_nFInstance)->id, (_cAUSE)); \
            scp_nf_fsm_fini((_nFInstance)); \
            ogs_sbi_nf_instance_remove(_nFInstance); \
        } else { \
            /* There is an assocation with other context */ \
            ogs_info("[%s:%d] (%s) NF suspended", \
                    _nFInstance->id, _nFInstance->reference_count, (_cAUSE)); \
            OGS_FSM_TRAN(&_nFInstance->sm, scp_nf_state_de_registered); \
            ogs_fsm_dispatch(&_nFInstance->sm, NULL); \
        } \
    } while(0)

typedef struct scp_conn_s scp_conn_t;

typedef struct scp_conn_s {
    ogs_sbi_object_t sbi;

    ogs_sbi_client_t *client;

    ogs_sbi_stream_t *stream;
    ogs_sbi_request_t *request;

} scp_conn_t;

void scp_context_init(void);
void scp_context_final(void);
scp_context_t *scp_self(void);

int scp_context_parse_config(void);

scp_conn_t *scp_conn_add(ogs_sbi_stream_t *stream);
void scp_conn_remove(scp_conn_t *sess);
void scp_conn_remove_all(void);

scp_conn_t *scp_conn_find(uint32_t index);

#ifdef __cplusplus
}
#endif

#endif /* SCP_CONTEXT_H */