/* @tier easy @module st @transform settlement-online */
/*
 * st_ol_0021.pgc - 정산 취소 처리 (ST_OL_0021)  [tier=easy]
 *
 * 정산 원장 건을 취소한다. 이미 정산완료(S) 건은 취소 불가로 반려하고,
 * 그 외 상태는 취소(U)로 전이한다.
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "acq_util.h"
#include "st_core.h"

EXEC SQL INCLUDE sqlca;


TX_SERVICE(ST_OL_0021, ctx)
{
    st_rec_t rec;
    char key[16];
    int  rc;

    tx_log(TX_LOG_INFO, "[ST_OL_0021] 정산 취소 처리 진입");

    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK) {
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    memset(&rec, 0, sizeof(rec));
    rc = st_rec_select(key, &rec);
    if (rc != TX_OK) {
        tx_return(ctx, rc, ctx->out);
        return;
    }

    if (strcmp(rec.status, ST_ST_SETTLED) == 0) {
        tx_log(TX_LOG_WARN, "[ST_OL_0021] 정산완료 건 취소불가 key=%s", key);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_buf_sets(ctx->out, "REASON", "ALREADY_SETTLED");
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    rc = st_rec_update_status(key, ST_ST_FAIL);
    if (rc != TX_OK) {
        tx_return(ctx, rc, ctx->out);
        return;
    }

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
    tx_buf_sets(ctx->out, "KEY", key);
    tx_buf_sets(ctx->out, "STATUS", ST_ST_FAIL);
    tx_log(TX_LOG_INFO, "[ST_OL_0021] 취소완료 key=%s", key);
    tx_return(ctx, TX_OK, ctx->out);
}