/* @tier easy @module mm @transform master-batch */
/*
 * mm_bt_0015.pgc - 마스터 변경이력 마감배치 (MM_BT_0015)  [tier=easy]
 *
 * 기준일 이전에 발생한 미마감(arch_yn='N') 마스터 변경이력
 * (mm_merchant_hist) 을 커서로 순회하며 이력 아카이브(mm_hist_archive) 로
 * INSERT 한 뒤 원본을 마감표시(arch_yn='Y') 한다. 온라인 이력테이블 용량을
 * 정리하는 아카이빙 배치이다. 배치 main 엔트리 포함.
 *
 * 실행:  mm_bt_0015 <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_0015(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_cutoff[9];
    char h_hist_id[20];
    char h_merch_id[16];
    char h_chg_field[24];
    char h_chg_date[9];
    EXEC SQL END DECLARE SECTION;

    long total = 0, archived = 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_0015 CURSOR FOR
        SELECT hist_id, merch_id, chg_field, chg_date
        FROM mm_merchant_hist
        WHERE arch_yn  = 'N'
          AND chg_date < :h_cutoff
        ORDER BY hist_id;

    EXEC SQL OPEN cur_mm_bt_0015;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_mm_bt_0015");
        return TX_EDB;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[mm_bt_0015] tx_begin 경고");

    for (;;) {
        EXEC SQL FETCH cur_mm_bt_0015
            INTO :h_hist_id, :h_merch_id, :h_chg_field, :h_chg_date;

        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_mm_bt_0015");
            errcnt++;
            break;
        }

        total++;

        /* 아카이브 적재 */
        EXEC SQL INSERT INTO mm_hist_archive
                     (hist_id, merch_id, chg_field, chg_date, arch_date)
                 VALUES (:h_hist_id, :h_merch_id, :h_chg_field,
                         :h_chg_date, :h_cutoff);
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("INSERT mm_hist_archive");
            errcnt++;
            continue;
        }

        /* 원본 마감표시 */
        EXEC SQL UPDATE mm_merchant_hist
                    SET arch_yn = 'Y'
                  WHERE hist_id = :h_hist_id;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("UPDATE mm_merchant_hist");
            errcnt++;
            continue;
        }

        archived++;
    }

    EXEC SQL CLOSE cur_mm_bt_0015;

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

    tx_log(TX_LOG_INFO,
           "[mm_bt_0015] 요약 cutoff=%s 대상=%ld 아카이브=%ld 오류=%ld",
           biz_date, total, archived, errcnt);

    printf("========== 마스터 변경이력 마감배치 [mm_bt_0015] ==========\n");
    printf("  마감기준일   : %s\n", biz_date);
    printf("  대상 건수    : %ld\n", total);
    printf("  아카이브     : %ld\n", archived);
    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_0015] 배치 시작 cutoff=%s", biz_date);

    rc = mm_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[mm_bt_0015] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_mm_bt_0015(biz_date);

    mm_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[mm_bt_0015] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}