/*
 * mg_dircase_dbio.pgc - mg 모듈 DB 접근 함수 (mg_dircase_dbio), archived into libmgdbio.a.
 * ECPG (EXEC SQL) functions; run on the caller's XA branch. No EXEC SQL CONNECT.
 * 방향별 부호가중 금액합 (IN +, OUT -) - CASE 식.
 */
#include <string.h>
#include <userlog.h>
#include "mg_dircase_dbio.h"

long mgdb_dir_case_amount(const char *bizdate)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_bizdate[16];
    long h_v = 0;
    EXEC SQL END DECLARE SECTION;
    strncpy(h_bizdate, bizdate, sizeof(h_bizdate)-1); h_bizdate[sizeof(h_bizdate)-1] = 0;
    EXEC SQL SELECT coalesce(sum(CASE direction
                WHEN 'IN'  THEN amount
                WHEN 'OUT' THEN -amount
                ELSE 0 END), 0)
        INTO :h_v FROM mg_msg_log WHERE biz_date = :h_bizdate;
    if (sqlca.sqlcode < 0) return -1;
    return h_v;
}
