/*
 * $Id$
 *
 * Copyright (C) 2012 Andrew Mortensen
 *
 * This file is part of the sca module for sip-router, a free SIP server.
 *
 * The sca module 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 2 of the License, or
 * (at your option) any later version
 *
 * The sca module 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
 *
 *
 */
#include "sca_common.h"

#include "sca_db.h"
#include "sca_subscribe.h"


db1_con_t	*sca_db_con = NULL;

const str  SCA_DB_SUBSCRIBER_COL_NAME = STR_STATIC_INIT( "subscriber" );
const str  SCA_DB_AOR_COL_NAME  = STR_STATIC_INIT( "aor" );
const str  SCA_DB_EVENT_COL_NAME = STR_STATIC_INIT( "event" );
const str  SCA_DB_EXPIRES_COL_NAME = STR_STATIC_INIT( "expires" );
const str  SCA_DB_STATE_COL_NAME = STR_STATIC_INIT( "state" );
const str  SCA_DB_APP_IDX_COL_NAME = STR_STATIC_INIT( "app_idx" );
const str  SCA_DB_CALL_ID_COL_NAME = STR_STATIC_INIT( "call_id" );
const str  SCA_DB_FROM_TAG_COL_NAME = STR_STATIC_INIT( "from_tag" );
const str  SCA_DB_TO_TAG_COL_NAME = STR_STATIC_INIT( "to_tag" );
const str  SCA_DB_RECORD_ROUTE_COL_NAME = STR_STATIC_INIT( "record_route" );
const str  SCA_DB_NOTIFY_CSEQ_COL_NAME = STR_STATIC_INIT( "notify_cseq" );
const str  SCA_DB_SUBSCRIBE_CSEQ_COL_NAME = STR_STATIC_INIT( "subscribe_cseq" );

    void
sca_db_subscriptions_get_value_for_column( int column, db_val_t *row_values,
	void *column_value )
{
    assert( column_value != NULL );
    assert( row_values != NULL );
    assert( column >= 0 && column < SCA_DB_SUBS_BOUNDARY );

    switch ( column ) {
    case SCA_DB_SUBS_SUBSCRIBER_COL:
    case SCA_DB_SUBS_AOR_COL:
    case SCA_DB_SUBS_CALL_ID_COL:
    case SCA_DB_SUBS_FROM_TAG_COL:
    case SCA_DB_SUBS_TO_TAG_COL:
    case SCA_DB_SUBS_RECORD_ROUTE_COL:
	((str *)column_value)->s = (char *)row_values[ column ].val.string_val;
	((str *)column_value)->len = strlen(((str *)column_value)->s );
	break;

    case SCA_DB_SUBS_EXPIRES_COL:
	*((time_t *)column_value) = row_values[ column ].val.time_val;
	break;

    case SCA_DB_SUBS_EVENT_COL:
    case SCA_DB_SUBS_STATE_COL:
    case SCA_DB_SUBS_NOTIFY_CSEQ_COL:
    case SCA_DB_SUBS_SUBSCRIBE_CSEQ_COL:
	*((int *)column_value) = row_values[ column ].val.int_val;
	break;

    default:
	column_value = NULL;
    }
}

    void
sca_db_subscriptions_set_value_for_column( int column, db_val_t *row_values,
	void *column_value )
{
    assert( column >= 0 && column < SCA_DB_SUBS_BOUNDARY );
    assert( column_value != NULL );
    assert( row_values != NULL );

    switch ( column ) {
    case SCA_DB_SUBS_SUBSCRIBER_COL:
    case SCA_DB_SUBS_AOR_COL:
    case SCA_DB_SUBS_CALL_ID_COL:
    case SCA_DB_SUBS_FROM_TAG_COL:
    case SCA_DB_SUBS_TO_TAG_COL:
    case SCA_DB_SUBS_RECORD_ROUTE_COL:
	row_values[ column ].val.str_val = *((str *)column_value);
	row_values[ column ].type = DB1_STR;
	row_values[ column ].nul = 0;
	break;

    case SCA_DB_SUBS_EXPIRES_COL:
	row_values[ column ].val.int_val = (int)(*((time_t *)column_value));
	row_values[ column ].type = DB1_INT;
	row_values[ column ].nul = 0;
	break;

    case SCA_DB_SUBS_APP_IDX_COL:
	/* for now, don't save appearance index associated with subscriber */
	row_values[ column ].val.int_val = 0;
	row_values[ column ].type = DB1_INT;
	row_values[ column ].nul = 0;
	break;

    default:
	LM_WARN( "sca_db_subscriptions_set_value_for_column: unrecognized "
		 "column index %d, treating as INT", column );
	/* fall through */

    case SCA_DB_SUBS_EVENT_COL:
    case SCA_DB_SUBS_STATE_COL:
    case SCA_DB_SUBS_NOTIFY_CSEQ_COL:
    case SCA_DB_SUBS_SUBSCRIBE_CSEQ_COL:
	row_values[ column ].val.int_val = *((int *)column_value);
	row_values[ column ].type = DB1_INT;
	row_values[ column ].nul = 0;
	break;
    }
}

    str **
sca_db_subscriptions_columns( void )
{
    static str		*subs_columns[] = {
			    (str *)&SCA_DB_SUBSCRIBER_COL_NAME,
			    (str *)&SCA_DB_AOR_COL_NAME,
			    (str *)&SCA_DB_EVENT_COL_NAME,
			    (str *)&SCA_DB_EXPIRES_COL_NAME,
			    (str *)&SCA_DB_STATE_COL_NAME,
			    (str *)&SCA_DB_APP_IDX_COL_NAME,
			    (str *)&SCA_DB_CALL_ID_COL_NAME,
			    (str *)&SCA_DB_FROM_TAG_COL_NAME,
			    (str *)&SCA_DB_TO_TAG_COL_NAME,
			    (str *)&SCA_DB_RECORD_ROUTE_COL_NAME,
			    (str *)&SCA_DB_NOTIFY_CSEQ_COL_NAME,
			    (str *)&SCA_DB_SUBSCRIBE_CSEQ_COL_NAME,
			    NULL
			};

    return( subs_columns );
}

    db1_con_t *
sca_db_get_connection( void )
{
    assert( sca && sca->cfg->db_url );
    assert( sca->db_api && sca->db_api->init );

    if ( sca_db_con == NULL ) {
	sca_db_con = sca->db_api->init( sca->cfg->db_url );
	/* catch connection error in caller */
    }

    return( sca_db_con );
}

    void
sca_db_disconnect( void )
{
    if ( sca_db_con != NULL ) {
	sca->db_api->close( sca_db_con );
	sca_db_con = NULL;
    }
}