/* @tier easy @module st @transform settlement-batch */
/*
 * st_bt_0014.pgc - 카드사(BIN) 정산 집계 배치  [tier=easy]
 *
 * 카드번호 앞 2자리(발급사 BIN)별로 매출/수수료를 그룹 집계하여
 * 발급 카드사 정산 대사용 순액을 산출한다.
 *
 * 실행:  st_bt_0014 <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_0014(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_bin[3];
    long h_cnt;
    long h_sum;
    long h_fee;
    EXEC SQL END DECLARE SECTION;

    long bin_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_0014 CURSOR FOR
        SELECT substr(card_no, 1, 2), count(*),
               coalesce(sum(amount), 0), coalesce(sum(fee), 0)
        FROM st_ledger
        WHERE biz_date = :h_biz_date
          AND status IN ('M', 'S')
        GROUP BY substr(card_no, 1, 2)
        ORDER BY 1;

    EXEC SQL OPEN cur_st_bt_0014;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_st_bt_0014");
        return TX_EDB;
    }

    printf("========== 카드사(BIN) 정산 집계 [st_bt_0014] ==========\n");
    printf("  영업일 : %s\n", biz_date);

    for (;;) {
        EXEC SQL FETCH cur_st_bt_0014 INTO :h_bin, :h_cnt, :h_sum, :h_fee;
        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_st_bt_0014");
            errcnt++;
            break;
        }
        bin_cnt++;
        long net = h_sum - h_fee;
        net_total += net;
        printf("  BIN %-2s 건=%7ld 매출=%15ld 수수료=%13ld 순액=%15ld\n",
               h_bin, h_cnt, h_sum, h_fee, net);
    }

    EXEC SQL CLOSE cur_st_bt_0014;

    printf("  ----------------------------------------\n");
    printf("  BIN 수 : %ld   카드사 정산순액 합계 : %ld\n", bin_cnt, net_total);
    printf("=============================================\n");

    tx_log(TX_LOG_INFO, "[st_bt_0014] 카드사정산 date=%s BIN=%ld 순액=%ld",
           biz_date, bin_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_0014] 배치 시작 date=%s", biz_date);

    rc = st_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[st_bt_0014] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_st_bt_0014(biz_date);

    st_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[st_bt_0014] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}