/* @tier easy @module st @transform settlement-batch */
/*
 * st_bt_0003.pgc - MDR 수수료 일괄계산 배치  [tier=easy]
 *
 * 접수(R) 건을 커서로 순회하며 MDR 요율(1.80%)로 수수료를 원단위 반올림
 * 계산하여 원장 fee 컬럼을 일괄 갱신한다.
 *
 * 실행:  st_bt_0003 <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_0003(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_key[16];
    long h_amount;
    long h_fee;
    EXEC SQL END DECLARE SECTION;

    const long mdr_bp = 180;   /* 1.80% */
    long total = 0, upd = 0, feesum = 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_0003 CURSOR FOR
        SELECT key, amount
        FROM st_ledger
        WHERE biz_date = :h_biz_date
          AND status   = 'R'
        ORDER BY key;

    EXEC SQL OPEN cur_st_bt_0003;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_st_bt_0003");
        return TX_EDB;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[st_bt_0003] tx_begin 경고");

    for (;;) {
        EXEC SQL FETCH cur_st_bt_0003 INTO :h_key, :h_amount;
        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_st_bt_0003");
            errcnt++;
            break;
        }
        total++;
        h_fee = (h_amount * mdr_bp + 5000) / 10000;

        EXEC SQL UPDATE st_ledger
                 SET fee = :h_fee, upd_ts = now()
                 WHERE key = :h_key;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("UPDATE fee st_bt_0003");
            errcnt++;
        } else {
            upd++;
            feesum += h_fee;
        }
    }

    EXEC SQL CLOSE cur_st_bt_0003;
    if (errcnt == 0) tx_commit(); else tx_abort();

    printf("========== MDR 수수료 일괄계산 [st_bt_0003] ==========\n");
    printf("  영업일     : %s\n", biz_date);
    printf("  대상 건수  : %ld\n", total);
    printf("  갱신 건수  : %ld\n", upd);
    printf("  수수료 합계: %ld\n", feesum);
    printf("  오류 건수  : %ld\n", errcnt);
    printf("=============================================\n");

    tx_log(TX_LOG_INFO, "[st_bt_0003] MDR계산 date=%s 갱신=%ld 수수료합=%ld",
           biz_date, upd, feesum);
    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_0003] 배치 시작 date=%s", biz_date);

    rc = st_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[st_bt_0003] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_st_bt_0003(biz_date);

    st_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[st_bt_0003] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}