/* @tier medium @module ac @transform acquire-online */
/*
 * ac_ol_0031.pgc - 매입 온라인 서비스 (AC_OL_0031)  [tier=medium]
 *
 * 매입 보류처리: 매입 원장 단건에 대해 보류 여부(hold_yn)를 설정한다.
 * 이미 정산완료(status='S') 된 건은 보류 설정/해제를 허용하지 않는다.
 */
#include <stdio.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

TX_SERVICE(AC_OL_0031, ctx)
{
    /* ---- ECPG 호스트 변수 선언부 ---- */
    EXEC SQL BEGIN DECLARE SECTION;
    char h_key[16];
    char h_status[2];
    char h_status_settled[2];
    char h_hold[2];
    EXEC SQL END DECLARE SECTION;

    char key[16], hold[2];

    tx_log(TX_LOG_INFO, "[AC_OL_0031] 매입 보류처리 서비스 진입");

    /* ---- 1. 입력 검증 ---- */
    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK ||
        tx_buf_get(ctx->in, "HOLD", hold, sizeof(hold)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[AC_OL_0031] 필수 필드 누락");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    if (hold[0] != 'Y' && hold[0] != 'N') {
        tx_log(TX_LOG_WARN, "[AC_OL_0031] HOLD 값 오류 hold=%s", hold);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    memset(h_key, 0, sizeof(h_key));
    strncpy(h_key, key, sizeof(h_key) - 1);
    strncpy(h_status_settled, AC_ST_SETTLED, sizeof(h_status_settled) - 1);
    h_status_settled[sizeof(h_status_settled) - 1] = '\0';

    /* ---- 2. 현재 상태 조회 ---- */
    EXEC SQL SELECT status
          INTO :h_status
          FROM ac_ledger
         WHERE key = :h_key;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[AC_OL_0031] 대상건 없음 key=%s", key);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("SELECT ac_ledger status");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* ---- 3. 업무규칙: 정산완료 건은 보류처리 불가 ---- */
    if (strncmp(h_status, h_status_settled, 1) == 0) {
        tx_log(TX_LOG_WARN, "[AC_OL_0031] 정산완료 보류불가 key=%s", key);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    memset(h_hold, 0, sizeof(h_hold));
    strncpy(h_hold, hold, sizeof(h_hold) - 1);

    /* ---- 4. 보류상태 갱신 ---- */
    if (tx_begin() != TX_OK) {
        tx_log(TX_LOG_ERROR, "[AC_OL_0031] 트랜잭션 시작 실패");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    EXEC SQL UPDATE ac_ledger
           SET hold_yn = :h_hold, upd_ts = now()
         WHERE key = :h_key;

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("UPDATE ac_ledger hold_yn");
        tx_abort();
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    if (tx_commit() != TX_OK) {
        tx_log(TX_LOG_ERROR, "[AC_OL_0031] 커밋 실패");
        tx_abort();
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    /* ---- 5. 응답 구성 ---- */
    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, "HOLD", hold);

    tx_log(TX_LOG_INFO, "[AC_OL_0031] 보류처리완료 key=%s hold=%s", key, hold);
    tx_return(ctx, TX_OK, ctx->out);
}