/* @tier hard @module st @transform settlement-batch */
/*
 * st_bt_0004.pgc - VAN 수수료 일괄부과 배치  [tier=hard]
 *
 * 접수(R) 건을 커서로 순회하며 건당 정액 VAN 수수료(120원)를 기존
 * 수수료에 가산하여 원장에 부과한다.
 *
 * 실행:  st_bt_0004 <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_0004(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_key[16];
    long h_fee;
    EXEC SQL END DECLARE SECTION;

    const long van_flat = 120;   /* VAN 건당 정액 */
    long total = 0, upd = 0, vansum = 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_0004 CURSOR FOR
        SELECT key, fee
        FROM st_ledger
        WHERE biz_date = :h_biz_date
          AND status   = 'R'
        ORDER BY key;

    EXEC SQL OPEN cur_st_bt_0004;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_st_bt_0004");
        return TX_EDB;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[st_bt_0004] tx_begin 경고");

    for (;;) {
        EXEC SQL FETCH cur_st_bt_0004 INTO :h_key, :h_fee;
        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_st_bt_0004");
            errcnt++;
            break;
        }
        total++;
        h_fee = h_fee + van_flat;

        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_0004");
            errcnt++;
        } else {
            upd++;
            vansum += van_flat;
        }
    }

    EXEC SQL CLOSE cur_st_bt_0004;
    if (errcnt == 0) tx_commit(); else tx_abort();

    printf("========== VAN 수수료 일괄부과 [st_bt_0004] ==========\n");
    printf("  영업일      : %s\n", biz_date);
    printf("  대상 건수   : %ld\n", total);
    printf("  부과 건수   : %ld\n", upd);
    printf("  VAN 수수료계: %ld\n", vansum);
    printf("  오류 건수   : %ld\n", errcnt);
    printf("=============================================\n");

    tx_log(TX_LOG_INFO, "[st_bt_0004] VAN부과 date=%s 부과=%ld 합계=%ld",
           biz_date, upd, vansum);
    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_0004] 배치 시작 date=%s", biz_date);

    rc = st_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[st_bt_0004] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_st_bt_0004(biz_date);

    st_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[st_bt_0004] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}