/* @tier easy @module lg @transform ledger-dbio */
/*
 * lg_io_0015.pgc - 원장 보조 DBIO (ECPG)  [tier=easy]
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "lg_io_0015.h"

EXEC SQL INCLUDE sqlca;

int lg_io_0015_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 min(dr_amt)
        INTO :h_val:h_ind
        FROM lg_ledger_line
        WHERE gl_acct = :h_key AND post_flag = 'Y';

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("lg_io_0015_fetch");
        return TX_EDB;
    }
    if (h_ind < 0)
        return TX_ENOENT;
    *out_amount = h_val;
    return TX_OK;
}

int lg_io_0015_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 DELETE FROM lg_ledger_bal
        WHERE gl_acct = :h_key AND dr_amt < :h_amt;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("lg_io_0015_touch");
        return TX_EDB;
    }
    if (sqlca.sqlerrd[2] == 0)
        return TX_ENOENT;
    return TX_OK;
}

long lg_io_0015_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(dr_amt), 0)
        INTO :h_sum
        FROM lg_ledger_line
        WHERE post_dt = :h_dt;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("lg_io_0015_total");
        return -1;
    }
    return h_sum;
}
