/* @tier easy @module vl @transform validation-dbio */
/*
 * vl_io_0008.pgc - 정합성 보조 DBIO (ECPG)  [tier=easy]
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "vl_io_0008.h"

EXEC SQL INCLUDE sqlca;

int vl_io_0008_fetch(const char *key, long *out_amount)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[32];
    long h_val;
    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 DECLARE vl_io_0008_fetch_cur CURSOR FOR
        SELECT recon_amt FROM vl_recon_ledger
        WHERE recon_key = :h_key ORDER BY biz_date DESC;
    EXEC SQL OPEN vl_io_0008_fetch_cur;
    EXEC SQL FETCH vl_io_0008_fetch_cur INTO :h_val;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        EXEC SQL CLOSE vl_io_0008_fetch_cur;
        return TX_ENOENT;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("vl_io_0008_fetch");
        EXEC SQL CLOSE vl_io_0008_fetch_cur;
        return TX_EDB;
    }
    EXEC SQL CLOSE vl_io_0008_fetch_cur;
    *out_amount = h_val;
    return TX_OK;
}

int vl_io_0008_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 UPDATE vl_recon_ledger
        SET recon_amt = recon_amt + :h_amt,
            match_flag = CASE WHEN recon_amt + :h_amt > 0 THEN 'Y' ELSE 'N' END,
            chk_ts = now()
        WHERE recon_key = :h_key;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("vl_io_0008_touch");
        return TX_EDB;
    }
    if (sqlca.sqlerrd[2] == 0)
        return TX_ENOENT;
    return TX_OK;
}

long vl_io_0008_total(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_dt[16];
    long h_sum;
    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';

    EXEC SQL SELECT coalesce(sum(recon_amt), 0)
        INTO :h_sum
        FROM vl_recon_ledger
        WHERE biz_date = :h_dt;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("vl_io_0008_total");
        return -1;
    }
    return h_sum;
}