/* 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_0030.pgc"
/* @tier medium @module mg @transform msg-gateway-online */
/*
 * mg_ol_0030.pgc - 전문게이트웨이 ACK/NAK 판정 서비스 (MG_OL_0030)  [tier=medium]
 *
 * 수신 응답전문의 응답코드(RESPCODE)와 시퀀스(RECVSEQ)를 송신 시퀀스
 * (SENDSEQ)와 대조하여 ACK/NAK 를 결정한다. 응답코드가 정상이고 시퀀스가
 * 일치하면 ACK(재전송 불필요), 그 외에는 NAK 로 판정하고 재전송필요 여부를
 * 응답한다. (순수 판정 로직 - DB 접근 없음)
 */
#include <stdio.h>
#include <string.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 17 "app/online/mg_ol_0030.pgc"


#define MG_MAX_RETRY  3

TX_SERVICE(MG_OL_0030, ctx)
{
    char respcode[8];
    long send_seq = -1, recv_seq = -1, retry = 0;
    int  code_ok, seq_ok, is_ack, need_retx;

    tx_log(TX_LOG_INFO, "[MG_OL_0030] ACK/NAK 판정 서비스 진입");

    /* 1) 판정 입력 수신 */
    if (tx_buf_get(ctx->in, "RESPCODE", respcode, sizeof(respcode)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[MG_OL_0030] 응답코드(RESPCODE) 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    tx_buf_getlong(ctx->in, "SENDSEQ", &send_seq);
    tx_buf_getlong(ctx->in, "RECVSEQ", &recv_seq);
    tx_buf_getlong(ctx->in, "RETRYCNT", &retry);

    /* 2) 응답코드/시퀀스 정합성 판정 */
    code_ok = (strncmp(respcode, RESP_OK, FLD_RESP_LEN) == 0);
    seq_ok  = (send_seq >= 0 && recv_seq >= 0 && send_seq == recv_seq);
    is_ack  = (code_ok && seq_ok);

    /* 3) 재전송 필요 여부 (NAK + 재시도한도 미소진) */
    need_retx = (!is_ack && retry < MG_MAX_RETRY);

    /* 4) 판정결과 응답 */
    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESP", RESP_OK);
    tx_buf_sets(ctx->out, "RESULT", is_ack ? "ACK" : "NAK");
    tx_buf_sets(ctx->out, "CODEOK", code_ok ? "Y" : "N");
    tx_buf_sets(ctx->out, "SEQOK", seq_ok ? "Y" : "N");
    tx_buf_sets(ctx->out, "RETRANSMIT", need_retx ? "Y" : "N");
    tx_buf_setlong(ctx->out, "RETRYCNT", retry);

    if (is_ack) {
        tx_log(TX_LOG_INFO, "[MG_OL_0030] ACK 판정 seq=%ld", recv_seq);
    } else if (need_retx) {
        tx_log(TX_LOG_WARN, "[MG_OL_0030] NAK 재전송 필요 code=%s send=%ld recv=%ld retry=%ld",
               respcode, send_seq, recv_seq, retry);
    } else {
        tx_log(TX_LOG_ERROR, "[MG_OL_0030] NAK 재시도한도 소진 code=%s retry=%ld",
               respcode, retry);
    }
    tx_return(ctx, TX_OK, ctx->out);
}