/* @tier easy @module vl @transform validation-dbio */
/*
 * vl_io_0005.pgc - 정합성 보조 DBIO (ECPG)  [tier=easy]
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "vl_io_0005.h"

EXEC SQL INCLUDE sqlca;

int vl_io_0005_fetch(const char *key, long *out_amount)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[32];
    long h_val;
    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(recon_amt)
        INTO :h_val:h_ind
        FROM vl_recon_ledger
        WHERE acct_no = :h_key;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("vl_io_0005_fetch");
        return TX_EDB;
    }
    if (h_ind < 0)
        return TX_ENOENT;
    *out_amount = h_val;
    return TX_OK;
}

int vl_io_0005_touch(const char *key, long amount)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[32];
    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 vl_recon_ledger (recon_key, recon_amt, chk_ts)
        VALUES (:h_key, :h_amt, now())
        ON CONFLICT (recon_key)
        DO UPDATE SET recon_amt = excluded.recon_amt, chk_ts = now();
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("vl_io_0005_touch");
        return TX_EDB;
    }
    return TX_OK;
}

long vl_io_0005_total(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_dt[16];
    long h_grp;
    EXEC SQL END DECLARE SECTION;

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

    long acc = 0;

    EXEC SQL DECLARE vl_io_0005_total_cur CURSOR FOR
        SELECT coalesce(sum(recon_amt), 0) FROM vl_recon_ledger
        WHERE biz_date = :h_dt GROUP BY acct_no;
    EXEC SQL OPEN vl_io_0005_total_cur;
    for (;;) {
        EXEC SQL FETCH vl_io_0005_total_cur INTO :h_grp;
        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("vl_io_0005_total");
            EXEC SQL CLOSE vl_io_0005_total_cur;
            return -1;
        }
        acc += h_grp;
    }
    EXEC SQL CLOSE vl_io_0005_total_cur;
    return acc;
}