/* 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_0015.pgc"
/* @tier easy @module lg @transform ledger-online */
/*
 * lg_ol_0015.pgc - 원장 온라인 서비스 (LG_OL_0015)  [tier=easy]
 *
 * 전기(posting) 확정: 단건 원장(KEY)의 상태를 확인해 접수(status='R')
 * 상태이면 처리완료(status='M')로 전기 확정한다. 이미 전기된(M 이상)
 * 건은 재전기하지 않고 경고와 함께 현재 상태를 반환한다.
 *
 * TxCore TX_SERVICE 엔트리. 요청 TXBUF 를 검증하고 lg_ledger 에
 * 직접 임베디드 SQL 을 수행한 뒤 응답 TXBUF 를 구성한다.
 */
#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 20 "app/online/lg_ol_0015.pgc"


TX_SERVICE(LG_OL_0015, ctx)
{
    /* exec sql begin declare section */
     
     
     
    
#line 25 "app/online/lg_ol_0015.pgc"
 char h_key [ 16 ] ;
 
#line 26 "app/online/lg_ol_0015.pgc"
 char h_status [ 2 ] ;
 
#line 27 "app/online/lg_ol_0015.pgc"
 char h_st_done [ 2 ] ;
/* exec sql end declare section */
#line 28 "app/online/lg_ol_0015.pgc"


    char key[16];

    tx_log(TX_LOG_INFO, "[LG_OL_0015] 전기(posting) 확정 서비스 진입");

    /* ---- 1. 요청 필드 수신 및 검증 ---- */
    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK || key[0] == '\0') {
        tx_log(TX_LOG_ERROR, "[LG_OL_0015] 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';

    /* ---- 2. 현재 상태 조회 ---- */
    { 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_status),(long)2,(long)1,(2)*sizeof(char), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);}
#line 50 "app/online/lg_ol_0015.pgc"


    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[LG_OL_0015] 전기 대상 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("LG_OL_0015 select");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* ---- 3. 접수(R) 가 아니면 이미 전기된 것으로 경고 ---- */
    if (strncmp(h_status, LG_ST_RECV, 1) != 0) {
        tx_log(TX_LOG_WARN, "[LG_OL_0015] 이미 전기됨 key=%s status=%s",
               key, h_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_status);
        tx_buf_sets(ctx->out, "POSTED", "N");   /* 이번 호출로는 전기 안 함 */
        tx_return(ctx, TX_OK, ctx->out);
        return;
    }

    strncpy(h_st_done, LG_ST_DONE, sizeof(h_st_done) - 1);
    h_st_done[sizeof(h_st_done) - 1] = '\0';

    /* ---- 4. 트랜잭션 시작 → R→M 전기 확정 ---- */
    if (tx_begin() != TX_OK) {
        tx_log(TX_LOG_ERROR, "[LG_OL_0015] 트랜잭션 시작 실패");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    { 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_st_done),(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),(long)2,(long)1,(2)*sizeof(char), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EOIT, ECPGt_EORT);}
#line 95 "app/online/lg_ol_0015.pgc"


    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("LG_OL_0015 update");
        tx_abort();
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }
    if (sqlca.sqlerrd[2] == 0) {
        /* 조회~갱신 사이 상태 변경(경합) → 전기 미수행 */
        tx_log(TX_LOG_WARN, "[LG_OL_0015] 전기 반영 0건(경합) key=%s", key);
        tx_abort();
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_FAIL, ctx->out);
        return;
    }

    if (tx_commit() != TX_OK) {
        tx_log(TX_LOG_ERROR, "[LG_OL_0015] 커밋 실패 key=%s", key);
        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, "STATUS", LG_ST_DONE);
    tx_buf_sets(ctx->out, "POSTED", "Y");

    tx_log(TX_LOG_INFO, "[LG_OL_0015] 전기 확정 완료 key=%s R→M", key);
    tx_return(ctx, TX_OK, ctx->out);
}
