/* @tier medium @module au @transform authorization-online */
/*
 * au_ol_0019.pgc - 승인 수수료 재계산(요율 적용 UPDATE) (AU_OL_0019)  [tier=medium]
 *
 * 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 "au_core.h"

EXEC SQL INCLUDE sqlca;

TX_SERVICE(AU_OL_0019, ctx)
{
    char key[16];
    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[AU_OL_0019] KEY 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16];
    long h_amount, h_fee;
    int  h_rate;
    EXEC SQL END DECLARE SECTION;

    long rate = 0;

    tx_log(TX_LOG_INFO, "[AU_OL_0019] 승인 수수료 재계산 진입");
    tx_buf_getlong(ctx->in, "RATEBP", &rate);   /* basis point */
    if (rate <= 0 || rate > 1000) rate = 100;   /* 기본 1.00% */
    h_rate = (int)rate;

    strncpy(h_key, key, 15); h_key[15] = '\0';
    EXEC SQL SELECT amount INTO :h_amount FROM au_ledger WHERE key = :h_key;
    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    h_fee = h_amount * h_rate / 10000;

    if (tx_begin() != TX_OK) tx_log(TX_LOG_WARN, "[AU_OL_0019] tx_begin 경고");
    EXEC SQL UPDATE au_ledger SET fee = :h_fee, upd_ts = now()
        WHERE key = :h_key;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("au_ol_0019 수수료");
        tx_abort();
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }
    tx_commit();

    tx_buf_reset(ctx->out);
    tx_buf_setlong(ctx->out, "AMOUNT", h_amount);
    tx_buf_setlong(ctx->out, "RATEBP", h_rate);
    tx_buf_setlong(ctx->out, "FEE", h_fee);
    tx_log(TX_LOG_INFO, "[AU_OL_0019] 수수료 재계산 fee=%ld(rate=%dbp)", h_fee, h_rate);
    tx_return(ctx, TX_OK, ctx->out);
}