/* @tier easy @module st @transform settlement-batch */
/*
 * st_bt_0005.pgc - 가맹점별 정산금 netting 배치  [tier=easy]
 *
 * 정산완료(M/S) 건을 가맹점별로 그룹 집계하여 매출합에서 수수료합을
 * 차감한 정산순액(netting)을 산출한다.
 *
 * 실행:  st_bt_0005 <YYYYMMDD> [db@host]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "acq_util.h"
#include "st_core.h"

EXEC SQL INCLUDE sqlca;


static int run_st_bt_0005(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_merch[16];
    long h_gross;
    long h_fee;
    EXEC SQL END DECLARE SECTION;

    long merch_cnt = 0, net_total = 0, errcnt = 0;

    strncpy(h_biz_date, biz_date, sizeof(h_biz_date) - 1);
    h_biz_date[sizeof(h_biz_date) - 1] = '\0';

    EXEC SQL DECLARE cur_st_bt_0005 CURSOR FOR
        SELECT merch_id, coalesce(sum(amount), 0), coalesce(sum(fee), 0)
        FROM st_ledger
        WHERE biz_date = :h_biz_date
          AND status IN ('M', 'S')
        GROUP BY merch_id
        ORDER BY merch_id;

    EXEC SQL OPEN cur_st_bt_0005;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_st_bt_0005");
        return TX_EDB;
    }

    printf("========== 가맹점별 정산 netting [st_bt_0005] ==========\n");
    printf("  영업일 : %s\n", biz_date);

    for (;;) {
        EXEC SQL FETCH cur_st_bt_0005 INTO :h_merch, :h_gross, :h_fee;
        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_st_bt_0005");
            errcnt++;
            break;
        }
        merch_cnt++;
        long net = h_gross - h_fee;
        net_total += net;
        printf("  가맹점 %-12s 매출=%13ld 수수료=%11ld 정산=%13ld\n",
               h_merch, h_gross, h_fee, net);
    }

    EXEC SQL CLOSE cur_st_bt_0005;

    printf("  ----------------------------------------\n");
    printf("  가맹점 수 : %ld   정산순액 합계 : %ld\n", merch_cnt, net_total);
    printf("=============================================\n");

    tx_log(TX_LOG_INFO, "[st_bt_0005] netting date=%s 가맹점=%ld 순액합=%ld",
           biz_date, merch_cnt, net_total);
    return (errcnt == 0) ? TX_OK : TX_FAIL;
}

int main(int argc, char **argv)
{
    const char *biz_date;
    const char *target;
    int rc;

    tx_set_loglevel(TX_LOG_INFO);

    if (argc < 2) {
        fprintf(stderr, "사용법: %s <YYYYMMDD> [db@host]\n", argv[0]);
        return 2;
    }
    biz_date = argv[1];
    target   = (argc >= 3) ? argv[2] : NULL;

    if (!date_is_valid(biz_date)) {
        fprintf(stderr, "오류: 유효하지 않은 영업일 '%s'\n", biz_date);
        return 2;
    }

    tx_log(TX_LOG_INFO, "[st_bt_0005] 배치 시작 date=%s", biz_date);

    rc = st_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[st_bt_0005] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_st_bt_0005(biz_date);

    st_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[st_bt_0005] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}