/* 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/st_ol_0018.pgc"
/* @tier medium @module st @transform settlement-online */
/*
 * st_ol_0018.pgc - 정산 상계(offset) 처리 (ST_OL_0018)  [tier=medium]
 *
 * 가맹점 채권(수취)과 채무(지급)를 상계하여 잔액과 방향을 산출한다.
 * 상계 후 잔여채권/잔여채무를 구분해 반환한다. 채권/채무 미입력 시
 * 원장(st_ledger)의 정산완료(S)=채무, 실패/회수(U)=채권으로 집계한다.
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "acq_util.h"
#include "st_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/st_ol_0018.pgc"



TX_SERVICE(ST_OL_0018, ctx)
{
    /* exec sql begin declare section */
     
     
     
    
#line 23 "app/online/st_ol_0018.pgc"
 char h_merch [ 16 ] ;
 
#line 24 "app/online/st_ol_0018.pgc"
 long h_recv ;
 
#line 25 "app/online/st_ol_0018.pgc"
 long h_pay ;
/* exec sql end declare section */
#line 26 "app/online/st_ol_0018.pgc"


    char merch[16];
    long receivable = 0, payable = 0, offset, residual;
    const char *dir;

    tx_log(TX_LOG_INFO, "[ST_OL_0018] 정산 상계 처리 진입");

    if (tx_buf_get(ctx->in, "MERCHID", merch, sizeof(merch)) != TX_OK) {
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    tx_buf_getlong(ctx->in, "RECEIVABLE", &receivable);
    tx_buf_getlong(ctx->in, "PAYABLE",    &payable);

    /* 미입력 시 원장 상태별 합계로 채권/채무 집계 */
    if (receivable <= 0 && payable <= 0) {
        strncpy(h_merch, merch, sizeof(h_merch) - 1);
        h_merch[sizeof(h_merch) - 1] = '\0';
        h_recv = 0;
        h_pay  = 0;
        { ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "select coalesce ( sum ( amount ) filter ( where status = 'U' ) , 0 ) , coalesce ( sum ( amount ) filter ( where status = 'S' ) , 0 ) from st_ledger where merch_id = $1 ", 
	ECPGt_char,(h_merch),(long)16,(long)1,(16)*sizeof(char), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EOIT, 
	ECPGt_long,&(h_recv),(long)1,(long)1,sizeof(long), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, 
	ECPGt_long,&(h_pay),(long)1,(long)1,sizeof(long), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);}
#line 52 "app/online/st_ol_0018.pgc"

        if (sqlca.sqlcode == TX_SQL_OK) {
            receivable = h_recv;
            payable    = h_pay;
        } else if (sqlca.sqlcode != TX_SQL_NOTFOUND) {
            TX_DBIO_LOG_ERR("SELECT 상계집계");
        }
    }

    if (receivable < 0 || payable < 0) {
        tx_buf_reset(ctx->out);
        tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    offset   = (receivable < payable) ? receivable : payable;
    residual = receivable - payable;
    dir      = (residual > 0) ? "RECV" : (residual < 0 ? "PAY" : "EVEN");

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
    tx_buf_sets(ctx->out, "MERCHID", merch);
    tx_buf_setlong(ctx->out, "RECEIVABLE", receivable);
    tx_buf_setlong(ctx->out, "PAYABLE", payable);
    tx_buf_setlong(ctx->out, "OFFSET", offset);
    tx_buf_setlong(ctx->out, "RESIDUAL", residual);
    tx_buf_sets(ctx->out, "DIR", dir);
    tx_log(TX_LOG_INFO, "[ST_OL_0018] 상계 recv=%ld pay=%ld offset=%ld 잔액=%ld(%s)",
           receivable, payable, offset, residual, dir);
    tx_return(ctx, TX_OK, ctx->out);
}