/* @tier easy @module mm @transform master-dbio */
/*
 * mm_io_0021.pgc - 마스터 보조 DBIO (ECPG)  [tier=easy]
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "mm_io_0021.h"

EXEC SQL INCLUDE sqlca;

int mm_io_0021_fetch(const char *key, long *out_amount)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char  h_key[20];
    long  h_amt;
    short h_ind;
    EXEC SQL END DECLARE SECTION;

    if (!key || !out_amount)
        return TX_EINVAL;
    strncpy(h_key, key, sizeof(h_key) - 1);
    h_key[sizeof(h_key) - 1] = '\0';

    EXEC SQL SELECT max(credit_lim)
        INTO :h_amt:h_ind
        FROM mst_card
        WHERE acct_no = :h_key;
    if (sqlca.sqlcode == TX_SQL_NOTFOUND)
        return TX_ENOENT;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("mm_io_0021_fetch");
        return TX_EDB;
    }
    if (h_ind < 0) {
        *out_amount = 0;
        return TX_ENOENT;
    }
    *out_amount = h_amt;
    return TX_OK;
}

int mm_io_0021_touch(const char *key, long amount)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[20];
    long h_amt;
    EXEC SQL END DECLARE SECTION;

    if (!key)
        return TX_EINVAL;
    strncpy(h_key, key, sizeof(h_key) - 1);
    h_key[sizeof(h_key) - 1] = '\0';
    h_amt = amount;

    EXEC SQL DELETE FROM mst_card
        WHERE acct_no = :h_key
          AND credit_lim < :h_amt;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("mm_io_0021_touch");
        return TX_EDB;
    }
    if (sqlca.sqlerrd[2] == 0)
        return TX_ENOENT;
    tx_log(TX_LOG_INFO, "mm_io_0021_touch 삭제 %ld건", (long)sqlca.sqlerrd[2]);
    return TX_OK;
}

long mm_io_0021_total(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_bd[9];
    long h_dr;
    long h_cr;
    EXEC SQL END DECLARE SECTION;

    if (!biz_date)
        return -1;
    strncpy(h_bd, biz_date, sizeof(h_bd) - 1);
    h_bd[sizeof(h_bd) - 1] = '\0';

    EXEC SQL SELECT
            coalesce(sum(CASE WHEN block_yn = 'D' THEN credit_lim ELSE 0 END), 0),
            coalesce(sum(CASE WHEN block_yn = 'C' THEN credit_lim ELSE 0 END), 0)
        INTO :h_dr, :h_cr
        FROM mst_card
        WHERE reg_dt = :h_bd;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("mm_io_0021_total");
        return -1;
    }
    return h_dr - h_cr;
}
