/* @tier easy @module ac @transform acquire-dbio */
/*
 * ac_io_0016.pgc - 매입 보조 DBIO (ECPG)  [tier=easy]
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "ac_io_0016.h"

EXEC SQL INCLUDE sqlca;

int ac_io_0016_fetch(const char *key, long *out_amount)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16];
    long h_amount;
    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 amount
        INTO :h_amount
        FROM ac_io_0016_t
        WHERE key = :h_key;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND)
        return TX_ENOENT;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("ac_io_0016_fetch");
        return TX_EDB;
    }
    *out_amount = h_amount;
    return TX_OK;
}

int ac_io_0016_touch(const char *key, long amount)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16];
    long h_amount;
    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_amount = amount;

    EXEC SQL UPDATE ac_io_0016_t
        SET amount = :h_amount, upd_ts = now()
        WHERE key = :h_key;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("ac_io_0016_touch");
        return TX_EDB;
    }
    if (sqlca.sqlerrd[2] == 0)
        return TX_ENOENT;
    return TX_OK;
}

long ac_io_0016_total(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    long h_sum;
    EXEC SQL END DECLARE SECTION;

    if (!biz_date)
        return -1;

    strncpy(h_biz_date, biz_date, sizeof(h_biz_date) - 1);
    h_biz_date[sizeof(h_biz_date) - 1] = '\0';

    EXEC SQL SELECT coalesce(sum(amount), 0)
        INTO :h_sum
        FROM ac_io_0016_t
        WHERE biz_date = :h_biz_date;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("ac_io_0016_total");
        return -1;
    }
    return h_sum;
}