/* 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/lg_ol_0024.pgc"
/* @tier easy @module lg @transform ledger-online */
/*
 * lg_ol_0024.pgc - 원장 온라인 서비스 (LG_OL_0024)  [tier=easy]
 *
 * 미결 완료전이: 단건 key 의 접수(R) 전표를 처리완료(M) 로 전이한다.
 * 이미 완료/정산 상태이면 전이하지 않고 경고 응답한다.
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "acq_util.h"
#include "lg_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 16 "app/online/lg_ol_0024.pgc"


/*
 * [업무 개요]
 *   접수(R) 상태로 대기 중인 미결 전표 한 건을 처리완료(M) 로 전이한다.
 *   전표가 이미 완료/정산 등 다른 상태이면 전이하지 않고 경고(WARN) 만
 *   덧붙여 정상 응답한다. (멱등적 재시도 허용)
 *
 * [상태 전이]
 *   R(접수) → M(처리완료)      이미 R 이 아니면 전이 없음 + WARN=ALREADY_DONE
 *
 * [동시성]
 *   조건부 UPDATE(WHERE status='R') 로 이중 처리 경합을 방지한다. 실제 전이
 *   여부는 sqlca.sqlerrd[2](affected rows) 로 판정한다.
 *
 * [처리 절차]
 *   1) KEY 추출/검증.
 *   2) 현재 status 조회(없으면 RESP_NOMERCH).
 *   3) R 이 아니면 경고 응답(정상 종료).
 *   4) tx_begin 후 R→M 조건부 UPDATE, tx_commit.
 *
 * [응답 필드]
 *   RESPCODE  처리결과코드   KEY 처리키(에코)
 *   STATUS    전이후 상태    MOVED 실제 전이 건수(0/1)   WARN 경고사유(옵션)
 */
TX_SERVICE(LG_OL_0024, ctx)
{
    /* exec sql begin declare section */
     
     
     
     
    
#line 44 "app/online/lg_ol_0024.pgc"
 char h_key [ 16 ] ;
 
#line 45 "app/online/lg_ol_0024.pgc"
 char h_status_r [ 2 ] ;
 
#line 46 "app/online/lg_ol_0024.pgc"
 char h_status_m [ 2 ] ;
 
#line 47 "app/online/lg_ol_0024.pgc"
 char h_cur_status [ 2 ] ;
/* exec sql end declare section */
#line 48 "app/online/lg_ol_0024.pgc"


    char key[16];
    long affected;

    tx_log(TX_LOG_INFO, "[LG_OL_0024] 미결 완료전이 진입");

    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK || key[0] == '\0') {
        tx_log(TX_LOG_ERROR, "[LG_OL_0024] KEY 누락");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    strncpy(h_key, key, sizeof(h_key) - 1);
    h_key[sizeof(h_key) - 1] = '\0';
    strncpy(h_status_r, LG_ST_RECV, sizeof(h_status_r) - 1);
    h_status_r[sizeof(h_status_r) - 1] = '\0';
    strncpy(h_status_m, LG_ST_DONE, sizeof(h_status_m) - 1);
    h_status_m[sizeof(h_status_m) - 1] = '\0';

    /* 현재 상태 확인 (경고 판단용) */
    { ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "select status from lg_ledger where key = $1 ", 
	ECPGt_char,(h_key),(long)16,(long)1,(16)*sizeof(char), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EOIT, 
	ECPGt_char,(h_cur_status),(long)2,(long)1,(2)*sizeof(char), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);}
#line 72 "app/online/lg_ol_0024.pgc"

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[LG_OL_0024] 전표 없음 key=%s", key);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_NOMERCH);
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("lg_ol_0024 select");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    if (h_cur_status[0] != LG_ST_RECV[0]) {
        tx_log(TX_LOG_WARN, "[LG_OL_0024] 이미 처리됨 key=%s status=%s", key, h_cur_status);
        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", h_cur_status);
        tx_buf_sets(ctx->out, "WARN", "ALREADY_DONE");
        tx_return(ctx, TX_OK, ctx->out);
        return;
    }

    if (tx_begin() != TX_OK) {
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    /* R 상태 조건부 전이 (동시성 안전) */
    { ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "update lg_ledger set status = $1  , upd_ts = now ( ) where key = $2  and status = $3 ", 
	ECPGt_char,(h_status_m),(long)2,(long)1,(2)*sizeof(char), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, 
	ECPGt_char,(h_key),(long)16,(long)1,(16)*sizeof(char), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, 
	ECPGt_char,(h_status_r),(long)2,(long)1,(2)*sizeof(char), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EOIT, ECPGt_EORT);}
#line 108 "app/online/lg_ol_0024.pgc"


    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("lg_ol_0024 update");
        tx_abort();
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }
    affected = (long)sqlca.sqlerrd[2];

    if (tx_commit() != TX_OK) {
        tx_abort();
        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, "KEY", key);
    tx_buf_sets(ctx->out, "STATUS", (affected > 0) ? LG_ST_DONE : LG_ST_RECV);
    tx_buf_setlong(ctx->out, "MOVED", affected);
    tx_log(TX_LOG_INFO, "[LG_OL_0024] 완료전이 key=%s 반영=%ld", key, affected);
    tx_return(ctx, TX_OK, ctx->out);
}
