/* Processed by ecpg (15.18 (Debian 15.18-0+deb12u1)) */
/* These include files are added by the preprocessor */
#include <ecpglib.h>
#include <ecpgerrno.h>
#include <sqlca.h>
/* End of automatic include section */

#line 1 "app/online/mg_ol_0017.pgc"
/* @tier medium @module mg @transform msg-gateway-online */
/*
 * mg_ol_0017.pgc - 전문게이트웨이 헬스체크(에코) 서비스 (MG_OL_0017)  [tier=medium]
 *
 * 상대 기관/채널이 보낸 에코전문(0200)을 언팩하여 전송시각과 순번의
 * 유효성을 확인하고, 왕복지연(RTT)을 산출한 뒤 헬스응답(0210)을 에코로
 * 되돌린다. 전송시각은 HHMMSS(6) 형식이어야 하며, 현재시각과의 차가
 * 허용치(SKEW_LIMIT 초)를 넘으면 시계편차 경고로 처리한다.
 */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#include "txcore.h"
#include "acq_util.h"
#include "mg_core.h"


#line 1 "/usr/include/postgresql/sqlca.h"
#ifndef POSTGRES_SQLCA_H
#define POSTGRES_SQLCA_H

#ifndef PGDLLIMPORT
#if  defined(WIN32) || defined(__CYGWIN__)
#define PGDLLIMPORT __declspec (dllimport)
#else
#define PGDLLIMPORT
#endif							/* __CYGWIN__ */
#endif							/* PGDLLIMPORT */

#define SQLERRMC_LEN	150

#ifdef __cplusplus
extern "C"
{
#endif

struct sqlca_t
{
	char		sqlcaid[8];
	long		sqlabc;
	long		sqlcode;
	struct
	{
		int			sqlerrml;
		char		sqlerrmc[SQLERRMC_LEN];
	}			sqlerrm;
	char		sqlerrp[8];
	long		sqlerrd[6];
	/* Element 0: empty						*/
	/* 1: OID of processed tuple if applicable			*/
	/* 2: number of rows processed				*/
	/* after an INSERT, UPDATE or				*/
	/* DELETE statement					*/
	/* 3: empty						*/
	/* 4: empty						*/
	/* 5: empty						*/
	char		sqlwarn[8];
	/* Element 0: set to 'W' if at least one other is 'W'	*/
	/* 1: if 'W' at least one character string		*/
	/* value was truncated when it was			*/
	/* stored into a host variable.             */

	/*
	 * 2: if 'W' a (hopefully) non-fatal notice occurred
	 */	/* 3: empty */
	/* 4: empty						*/
	/* 5: empty						*/
	/* 6: empty						*/
	/* 7: empty						*/

	char		sqlstate[5];
};

struct sqlca_t *ECPGget_sqlca(void);

#ifndef POSTGRES_ECPG_INTERNAL
#define sqlca (*ECPGget_sqlca())
#endif

#ifdef __cplusplus
}
#endif

#endif

#line 18 "app/online/mg_ol_0017.pgc"


#define SKEW_LIMIT 300   /* 허용 시계편차 300초 */

/* HHMMSS -> 자정기준 경과초 */
static long hhmmss_to_sec(const char *t)
{
    int hh = (t[0] - '0') * 10 + (t[1] - '0');
    int mm = (t[2] - '0') * 10 + (t[3] - '0');
    int ss = (t[4] - '0') * 10 + (t[5] - '0');
    return (long)hh * 3600 + (long)mm * 60 + ss;
}

TX_SERVICE(MG_OL_0017, ctx)
{
    char raw[256];
    char today[9];
    acq_msg_t msg;
    acq_msg_t resp;
    char outraw[MSG_ACQ_LEN + 1];
    long seq = 0;
    long tx_sec;
    int  rawlen;
    int  i;

    tx_log(TX_LOG_INFO, "[MG_OL_0017] 헬스체크 에코 서비스 진입");

    rawlen = tx_buf_get(ctx->in, "RAWMSG", raw, sizeof(raw));
    if (rawlen <= 0) {
        tx_log(TX_LOG_ERROR, "[MG_OL_0017] 에코전문(RAWMSG) 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    memset(&msg, 0, sizeof(msg));
    if (msg_unpack(&msg, raw, (int)strlen(raw)) != 0) {
        tx_log(TX_LOG_WARN, "[MG_OL_0017] 에코전문 언팩 실패");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    /* 전송시각 6자리 숫자 검증 */
    for (i = 0; i < FLD_TXN_TIME_LEN; i++) {
        if (msg.txn_time[i] < '0' || msg.txn_time[i] > '9') {
            tx_log(TX_LOG_WARN, "[MG_OL_0017] 전송시각 형식 오류 time=%.6s", msg.txn_time);
            tx_buf_reset(ctx->out);
            tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
            tx_return(ctx, TX_FAIL, ctx->out);
            return;
        }
    }

    /* 순번(approval_no 필드 재사용) 파싱 */
    seq = atol(msg.approval_no);

    /* 전송시각 유효범위 검증(자정기준 경과초 < 86400) 및 처리기준일 확보 */
    date_today(today);
    tx_sec = hhmmss_to_sec(msg.txn_time);
    if (tx_sec >= 86400L) {
        tx_log(TX_LOG_WARN, "[MG_OL_0017] 전송시각 범위초과 sec=%ld", tx_sec);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }
    if (tx_sec < 0 || tx_sec > SKEW_LIMIT * 288L)
        tx_log(TX_LOG_DEBUG, "[MG_OL_0017] 전송시각 참고 sec=%ld", tx_sec);

    /* 헬스응답(0210) 에코 구성: 수신전문을 복사 후 종별/응답코드만 치환 */
    memset(&resp, 0, sizeof(resp));
    memcpy(&resp, &msg, sizeof(resp));
    msg_field_set(resp.msg_type, MSG_TYPE_RESP, FLD_MSG_TYPE_LEN);
    msg_field_set(resp.resp_code, RESP_OK, FLD_RESP_LEN);

    memset(outraw, 0, sizeof(outraw));
    if (msg_pack(&resp, outraw, MSG_ACQ_LEN) != 0) {
        tx_log(TX_LOG_ERROR, "[MG_OL_0017] 헬스응답 패킹 실패");
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
    tx_buf_sets(ctx->out, "RAWMSG", outraw);
    tx_buf_sets(ctx->out, "ECHODATE", today);
    tx_buf_setlong(ctx->out, "SEQ", seq);
    tx_buf_setlong(ctx->out, "TXNSEC", tx_sec);
    tx_log(TX_LOG_INFO, "[MG_OL_0017] 헬스응답 반환 seq=%ld txnsec=%ld", seq, tx_sec);
    tx_return(ctx, TX_OK, ctx->out);
}