/* @tier easy @module py @transform payment-online */
/*
 * py_ol_0021.pgc - 지급 우선순위 변경(긴급지급 상향) (PY_OL_0021)  [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_0021, ctx)
{
    char key[16];
    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[PY_OL_0021] KEY 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16];
    long h_prio;
    EXEC SQL END DECLARE SECTION;

    long prio = 0;

    tx_log(TX_LOG_INFO, "[PY_OL_0021] 지급 우선순위 변경 진입");
    tx_buf_getlong(ctx->in, "PRIORITY", &prio);
    if (prio < 1 || prio > 9) prio = 5;
    strncpy(h_key, key, 15); h_key[15] = '\0';
    h_prio = prio;

    /* fee 컬럼을 우선순위 힌트로 겸용 (음수 표현 회피 위해 offset) */
    if (tx_begin() != TX_OK) tx_log(TX_LOG_WARN, "[PY_OL_0021] tx_begin 경고");
    EXEC SQL UPDATE py_ledger SET fee = :h_prio, upd_ts = now()
        WHERE key = :h_key AND status = 'R';
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("py_ol_0021 우선순위"); tx_abort();
        tx_return(ctx, TX_EDB, ctx->out); return;
    }
    if (sqlca.sqlerrd[2] == 0) { tx_abort(); tx_return(ctx, TX_ENOENT, ctx->out); return; }
    tx_commit();

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "KEY", key);
    tx_buf_setlong(ctx->out, "PRIORITY", h_prio);
    tx_log(TX_LOG_INFO, "[PY_OL_0021] 우선순위 key=%s prio=%ld", key, h_prio);
    tx_return(ctx, TX_OK, ctx->out);
}