/* @tier easy @module py @transform payment-online */
/*
 * py_ol_0028.pgc - 지급 가맹점 등록확인(지급이력 존재검사) (PY_OL_0028)  [tier=easy]
 *
 * TxCore TX_SERVICE 엔트리. 요청 TXBUF 를 검증하고 임베디드 SQL / 표준
 * DBIO / tx_call 로 처리한 뒤 응답 TXBUF 를 구성한다.
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "acq_util.h"
#include "py_core.h"

EXEC SQL INCLUDE sqlca;

TX_SERVICE(PY_OL_0028, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_merch[16];
    int  h_cnt;
    long h_last;
    EXEC SQL END DECLARE SECTION;

    char merch[16];

    tx_log(TX_LOG_INFO, "[PY_OL_0028] 지급 가맹점 등록확인 진입");
    if (tx_buf_get(ctx->in, "MERCHID", merch, sizeof(merch)) != TX_OK) {
        tx_return(ctx, TX_EINVAL, ctx->out); return;
    }
    strncpy(h_merch, merch, 15); h_merch[15] = '\0';

    EXEC SQL SELECT count(*), coalesce(max(amount), 0) INTO :h_cnt, :h_last
        FROM py_ledger WHERE merch_id = :h_merch;
    if (sqlca.sqlcode != TX_SQL_OK) { TX_DBIO_LOG_ERR("py_ol_0028"); tx_return(ctx, TX_EDB, ctx->out); return; }

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "MERCHID", merch);
    tx_buf_sets(ctx->out, "REGISTERED", (h_cnt > 0) ? "Y" : "N");
    tx_buf_setlong(ctx->out, "HISTCNT", h_cnt);
    tx_buf_setlong(ctx->out, "MAXAMT", h_last);
    tx_log(TX_LOG_INFO, "[PY_OL_0028] 등록확인 merch=%s cnt=%d", merch, h_cnt);
    tx_return(ctx, (h_cnt > 0) ? TX_OK : TX_ENOENT, ctx->out);
}
