/* @tier easy @module cl @transform closing-dbio */
/*
 * cl_io_0022.pgc - 마감 보조 DBIO (ECPG)  [tier=easy]
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "cl_io_0022.h"

EXEC SQL INCLUDE sqlca;

int cl_io_0022_fetch(const char *key, long *out_amount)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[20];
    long h_amt;
    long h_acc;
    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';
    h_acc = 0;

    EXEC SQL DECLARE cl_io_0022_fetch_cur CURSOR FOR
        SELECT carry_amt FROM cls_trial
        WHERE acct_no = :h_key
        ORDER BY biz_date;
    EXEC SQL OPEN cl_io_0022_fetch_cur;
    for (;;) {
        EXEC SQL FETCH cl_io_0022_fetch_cur INTO :h_amt;
        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("cl_io_0022_fetch");
            EXEC SQL CLOSE cl_io_0022_fetch_cur;
            return TX_EDB;
        }
        h_acc += h_amt;
    }
    EXEC SQL CLOSE cl_io_0022_fetch_cur;
    *out_amount = h_acc;
    return TX_OK;
}

int cl_io_0022_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 cls_trial
        WHERE acct_no = :h_key
          AND carry_amt < :h_amt;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("cl_io_0022_touch");
        return TX_EDB;
    }
    if (sqlca.sqlerrd[2] == 0)
        return TX_ENOENT;
    tx_log(TX_LOG_INFO, "cl_io_0022_touch 삭제 %ld건", (long)sqlca.sqlerrd[2]);
    return TX_OK;
}

long cl_io_0022_total(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_bd[9];
    long h_sum;
    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(carry_amt), 0)
        INTO :h_sum
        FROM cls_month
        WHERE biz_date = :h_bd;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("cl_io_0022_total");
        return -1;
    }
    return h_sum;
}