/* 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/rc_ol_0022.pgc"
/* @tier medium @module rc @transform reconciliation-online */
/*
 * rc_ol_0022.pgc - 대사 자동보정 온라인 서비스 (RC_OL_0022)
 *
 * 승인금액(APPRAMT) 과 원장 거래금액의 차이를 허용오차(TOL) 와 비교하여
 * 자동보정 여부를 판정한다.
 *
 * [입력]
 *   KEY     - 처리키(승인/거래 번호)
 *   APPRAMT - 승인금액(원)
 *   TOL     - 허용오차(원, 0 이상)
 *
 * [판정]
 *   diff = amount - APPRAMT, absd = |diff|
 *   - diff == 0        → ACTION=NOOP,      상태 변경 없음.
 *   - absd <= TOL      → 자동보정(허용오차 이내) → 매입확정('M'), ACTION=CORRECTED,
 *                        보정액(adj)=diff 를 로그로 남긴다.
 *   - absd >  TOL      → 허용오차 초과 → 불일치('U'), ACTION=MANUAL(수기검토).
 *
 * [응답]
 *   KEY / DIFF / TOL / ACTION / STATUS
 *
 * 커서를 사용하지 않는 단건 처리 서비스이다.
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "acq_util.h"
#include "rc_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 32 "app/online/rc_ol_0022.pgc"


TX_SERVICE(RC_OL_0022, ctx)
{
    rc_rec_t rec;
    char key[16];
    long appr_amt = 0;
    long tol = 0;
    long diff, absd, adj = 0;
    int  rc;
    const char *action;
    const char *new_st;
    int  do_update = 0;

    tx_log(TX_LOG_INFO, "[RC_OL_0022] 대사 자동보정 서비스 진입");

    if (tx_buf_get(ctx->in, "KEY", key, sizeof(key)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[RC_OL_0022] KEY 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    if (tx_buf_getlong(ctx->in, "APPRAMT", &appr_amt) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[RC_OL_0022] APPRAMT(승인금액) 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    if (tx_buf_getlong(ctx->in, "TOL", &tol) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[RC_OL_0022] TOL(허용오차) 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    if (tol < 0) {
        tx_log(TX_LOG_WARN, "[RC_OL_0022] 허용오차 음수 오류 tol=%ld", tol);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    memset(&rec, 0, sizeof(rec));
    rc = rc_rec_select(key, &rec);
    if (rc != TX_OK) {
        tx_log(TX_LOG_WARN, "[RC_OL_0022] 원장 조회 실패 key=%s rc=%d(%s)",
               key, rc, tx_strerror(rc));
        tx_return(ctx, rc, ctx->out);
        return;
    }

    diff = rec.amount - appr_amt;
    absd = (diff < 0) ? -diff : diff;

    if (diff == 0) {
        /* 완전일치 → 무처리 */
        action    = "NOOP";
        new_st    = rec.status;
        do_update = 0;
        tx_log(TX_LOG_INFO, "[RC_OL_0022] 완전일치 key=%s 변경없음", key);
    } else if (absd <= tol) {
        /* 허용오차 이내 → 자동보정 후 매입확정 */
        action    = "CORRECTED";
        new_st    = RC_ST_DONE;
        adj       = diff;
        do_update = 1;
        tx_log(TX_LOG_INFO,
               "[RC_OL_0022] 자동보정 key=%s 차이=%ld 허용오차=%ld 보정액=%ld",
               key, diff, tol, adj);
    } else {
        /* 허용오차 초과 → 불일치, 수기검토 대상 */
        action    = "MANUAL";
        new_st    = RC_ST_FAIL;
        do_update = 1;
        tx_log(TX_LOG_WARN,
               "[RC_OL_0022] 허용오차 초과(수기검토) key=%s 차이=%ld 허용오차=%ld",
               key, diff, tol);
    }

    if (do_update) {
        rc = rc_rec_update_status(key, new_st);
        if (rc != TX_OK) {
            tx_log(TX_LOG_ERROR, "[RC_OL_0022] 상태전이 실패 key=%s rc=%d", key, rc);
            tx_return(ctx, rc, ctx->out);
            return;
        }
    }

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "KEY", rec.key);
    tx_buf_setlong(ctx->out, "DIFF", diff);
    tx_buf_setlong(ctx->out, "TOL", tol);
    tx_buf_sets(ctx->out, "ACTION", action);
    tx_buf_sets(ctx->out, "STATUS", new_st);

    tx_log(TX_LOG_INFO, "[RC_OL_0022] 자동보정 완료 key=%s 조치=%s", key, action);
    tx_return(ctx, TX_OK, ctx->out);
}
