/* 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_0028.pgc"
/* @tier easy @module lg @transform ledger-online */
/*
 * lg_ol_0028.pgc - 원장 온라인 서비스 (LG_OL_0028)  [tier=easy]
 *
 * 전기 취소: 단건 key 의 처리완료(M) 전표를 접수(R) 로 되돌린다(전기취소).
 * 되돌림 후 해당 가맹점의 원장 잔액(Σamount)을 재집계하여 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_0028.pgc"


/*
 * [업무 개요]
 *   이미 처리완료(M) 로 전기(轉記)된 전표를 접수(R) 상태로 되돌리는 전기취소
 *   기능이다. 잘못 확정된 매출을 재검토 대기 상태로 환원할 때 사용하며,
 *   되돌림 직후 가맹점 잔액을 재집계하여 영향도를 즉시 확인한다.
 *
 * [상태 전이]
 *   M(처리완료) → R(접수)      M 이 아닌 전표는 전기취소 불가(RESP_INVALID)
 *
 * [처리 절차]
 *   1) KEY 추출/검증.
 *   2) 단건 SELECT 로 merch_id, 현재 status 확보(없으면 RESP_NOMERCH).
 *   3) 상태가 M 이 아니면 거부.
 *   4) tx_begin 후 status='R' 로 UPDATE.
 *   5) 같은 트랜잭션에서 가맹점 잔액 Σamount 재집계, tx_commit.
 *
 * [응답 필드]
 *   RESPCODE  처리결과코드   KEY 처리키(에코)   MERCHID 가맹점번호
 *   STATUS    되돌림후 상태(R)   BALANCE 되돌림 후 가맹점 잔액
 */
TX_SERVICE(LG_OL_0028, ctx)
{
    /* exec sql begin declare section */
     
     
     
     
     
    
#line 41 "app/online/lg_ol_0028.pgc"
 char h_key [ 16 ] ;
 
#line 42 "app/online/lg_ol_0028.pgc"
 char h_status_r [ 2 ] ;
 
#line 43 "app/online/lg_ol_0028.pgc"
 char h_cur_status [ 2 ] ;
 
#line 44 "app/online/lg_ol_0028.pgc"
 char h_merch_id [ 16 ] ;
 
#line 45 "app/online/lg_ol_0028.pgc"
 long h_balance ;
/* exec sql end declare section */
#line 46 "app/online/lg_ol_0028.pgc"


    char key[16];

    tx_log(TX_LOG_INFO, "[LG_OL_0028] 전기 취소 진입");

    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK || key[0] == '\0') {
        tx_log(TX_LOG_ERROR, "[LG_OL_0028] 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';

    { ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "select merch_id , 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_merch_id),(long)16,(long)1,(16)*sizeof(char), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, 
	ECPGt_char,(h_cur_status),(long)2,(long)1,(2)*sizeof(char), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);}
#line 67 "app/online/lg_ol_0028.pgc"

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_WARN, "[LG_OL_0028] 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_0028 select");
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* 처리완료(M) 전표만 전기취소 대상 */
    if (h_cur_status[0] != LG_ST_DONE[0]) {
        tx_log(TX_LOG_WARN, "[LG_OL_0028] 전기취소 불가 상태 key=%s status=%s",
               key, h_cur_status);
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_buf_sets(ctx->out, "STATUS", h_cur_status);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    if (tx_begin() != TX_OK) {
        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 ", 
	ECPGt_char,(h_status_r),(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_EOIT, ECPGt_EORT);}
#line 101 "app/online/lg_ol_0028.pgc"

    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("lg_ol_0028 update");
        tx_abort();
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_SYSERR);
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* 되돌림 후 가맹점 잔액 재집계 */
    { ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "select coalesce ( sum ( amount ) , 0 ) from lg_ledger where merch_id = $1 ", 
	ECPGt_char,(h_merch_id),(long)16,(long)1,(16)*sizeof(char), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EOIT, 
	ECPGt_long,&(h_balance),(long)1,(long)1,sizeof(long), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);}
#line 114 "app/online/lg_ol_0028.pgc"

    if (sqlca.sqlcode != TX_SQL_OK)
        h_balance = 0;

    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, "MERCHID", h_merch_id);
    tx_buf_sets(ctx->out, "STATUS", LG_ST_RECV);
    tx_buf_setlong(ctx->out, "BALANCE", h_balance);
    tx_log(TX_LOG_INFO, "[LG_OL_0028] 전기취소 완료 key=%s 잔액=%ld", key, h_balance);
    tx_return(ctx, TX_OK, ctx->out);
}
