/* @tier medium @module mm @transform master-batch */
/*
 * mm_bt_0009.pgc - 휴면가맹점 처리배치 (MM_BT_0009)  [tier=medium]
 *
 * 최종거래일(last_txn_date) 이 휴면기준일을 초과하도록 오래된 유효
 * 가맹점(mm_merchant, status='M') 을 커서로 순회하며 휴면(status='U') 으로
 * 전이하고 상태변경이력(mm_status_hist) 을 남긴다. 인자로 받은 기준일을
 * 휴면 판정 컷오프로 사용한다. 배치 main 엔트리 포함.
 *
 * 실행:  mm_bt_0009 <YYYYMMDD> [db@host]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

static int run_mm_bt_0009(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_cutoff[9];
    char h_merch_id[16];
    char h_last_txn[9];
    EXEC SQL END DECLARE SECTION;

    long total = 0, dormant = 0, errcnt = 0;

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

    EXEC SQL DECLARE cur_mm_bt_0009 CURSOR FOR
        SELECT merch_id, last_txn_date
        FROM mm_merchant
        WHERE status        = 'M'
          AND last_txn_date < :h_cutoff
        ORDER BY merch_id;

    EXEC SQL OPEN cur_mm_bt_0009;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_mm_bt_0009");
        return TX_EDB;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[mm_bt_0009] tx_begin 경고");

    for (;;) {
        EXEC SQL FETCH cur_mm_bt_0009 INTO :h_merch_id, :h_last_txn;

        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_mm_bt_0009");
            errcnt++;
            break;
        }

        total++;

        EXEC SQL UPDATE mm_merchant
                    SET status      = 'U',
                        status_date = :h_cutoff
                  WHERE merch_id = :h_merch_id;
        if (sqlca.sqlcode != TX_SQL_OK) {
            tx_log(TX_LOG_ERROR,
                   "[mm_bt_0009] 휴면전이 실패 merch=%s", h_merch_id);
            errcnt++;
            continue;
        }

        EXEC SQL INSERT INTO mm_status_hist
                     (merch_id, old_status, new_status, reason, chg_date)
                 VALUES (:h_merch_id, 'M', 'U', 'DORMANT', :h_cutoff);

        dormant++;
    }

    EXEC SQL CLOSE cur_mm_bt_0009;

    if (errcnt == 0)
        tx_commit();
    else
        tx_abort();

    tx_log(TX_LOG_INFO,
           "[mm_bt_0009] 요약 cutoff=%s 대상=%ld 휴면=%ld 오류=%ld",
           biz_date, total, dormant, errcnt);

    printf("========== 휴면가맹점 처리배치 [mm_bt_0009] ==========\n");
    printf("  휴면기준일   : %s\n", biz_date);
    printf("  대상 건수    : %ld\n", total);
    printf("  휴면 전이(U) : %ld\n", dormant);
    printf("  오류 건수    : %ld\n", errcnt);
    printf("===================================================\n");

    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 기준일 '%s'\n", biz_date);
        return 2;
    }

    tx_log(TX_LOG_INFO, "[mm_bt_0009] 배치 시작 cutoff=%s", biz_date);

    rc = mm_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[mm_bt_0009] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_mm_bt_0009(biz_date);

    mm_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[mm_bt_0009] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}
