/* @tier easy @module mm @transform master-dbio */
/*
 * mm_io_0013.pgc - 마스터 보조 DBIO (ECPG)  [tier=easy]
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "mm_io_0013.h"

EXEC SQL INCLUDE sqlca;

int mm_io_0013_fetch(const char *key, long *out_amount)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[20];
    long h_amt;
    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 coalesce(sum(a.balance), 0)
        INTO :h_amt
        FROM mst_deposit a
        JOIN mst_loan b ON a.acct_no = b.acct_no
        WHERE a.acct_no = :h_key
          AND b.status_cd = 'Y';

    if (sqlca.sqlcode == TX_SQL_NOTFOUND)
        return TX_ENOENT;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("mm_io_0013_fetch");
        return TX_EDB;
    }
    *out_amount = h_amt;
    return TX_OK;
}

int mm_io_0013_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 INSERT INTO mst_deposit (acct_no, balance, upd_ts)
        VALUES (:h_key, :h_amt, now())
        ON CONFLICT (acct_no)
        DO UPDATE SET balance = mst_deposit.balance + EXCLUDED.balance,
                      upd_ts = now();
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("mm_io_0013_touch");
        return TX_EDB;
    }
    if (sqlca.sqlerrd[2] == 0)
        return TX_ENOENT;
    return TX_OK;
}

long mm_io_0013_total(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_bd[9];
    long h_avg;
    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(avg(balance), 0)::bigint
        INTO :h_avg
        FROM mst_deposit
        WHERE biz_date = :h_bd
          AND status_cd = 'A';
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("mm_io_0013_total");
        return -1;
    }
    return h_avg;
}