/* @tier easy @module mm @transform master-batch */
/*
 * mm_bt_0010.pgc - 수수료율 일괄변경 배치 (MM_BT_0010)  [tier=easy]
 *
 * 특정 업종(industry_cd) 가맹점을 커서로 순회하며 수수료율을 일괄 변경한다.
 * 가맹점별로 기존 유효 수수료율(mm_fee_rate) 을 종료(status='C') 처리하고
 * 신규 요율행을 INSERT 한다. 배치 main 엔트리 포함.
 *
 * 실행:  mm_bt_0010 <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;

/* 대상 업종(일반음식점) 및 신규 적용 요율(2.30% = 230 bp) */
#define MM_TARGET_INDUSTRY  "7011"
#define MM_NEW_FEE_RATE     230L

static int run_mm_bt_0010(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_industry[8];
    char h_merch_id[16];
    long h_new_rate;
    EXEC SQL END DECLARE SECTION;

    long total = 0, applied = 0, errcnt = 0;

    strncpy(h_biz_date, biz_date, sizeof(h_biz_date) - 1);
    h_biz_date[sizeof(h_biz_date) - 1] = '\0';
    strncpy(h_industry, MM_TARGET_INDUSTRY, sizeof(h_industry) - 1);
    h_industry[sizeof(h_industry) - 1] = '\0';
    h_new_rate = MM_NEW_FEE_RATE;

    EXEC SQL DECLARE cur_mm_bt_0010 CURSOR FOR
        SELECT merch_id
        FROM mm_merchant
        WHERE status      = 'M'
          AND industry_cd = :h_industry
        ORDER BY merch_id;

    EXEC SQL OPEN cur_mm_bt_0010;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_mm_bt_0010");
        return TX_EDB;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[mm_bt_0010] tx_begin 경고");

    for (;;) {
        EXEC SQL FETCH cur_mm_bt_0010 INTO :h_merch_id;

        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_mm_bt_0010");
            errcnt++;
            break;
        }

        total++;

        /* 기존 유효 요율 종료 처리 */
        EXEC SQL UPDATE mm_fee_rate
                    SET status     = 'C',
                        close_date = :h_biz_date
                  WHERE merch_id = :h_merch_id
                    AND status   = 'A';
        if (sqlca.sqlcode != TX_SQL_OK && sqlca.sqlcode != TX_SQL_NOTFOUND) {
            TX_DBIO_LOG_ERR("UPDATE mm_fee_rate close");
            errcnt++;
            continue;
        }

        /* 신규 요율 등록 */
        EXEC SQL INSERT INTO mm_fee_rate
                     (merch_id, fee_rate, status, start_date)
                 VALUES (:h_merch_id, :h_new_rate, 'A', :h_biz_date);
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("INSERT mm_fee_rate");
            errcnt++;
            continue;
        }

        applied++;
    }

    EXEC SQL CLOSE cur_mm_bt_0010;

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

    tx_log(TX_LOG_INFO,
           "[mm_bt_0010] 요약 date=%s 업종=%s 대상=%ld 변경=%ld 오류=%ld",
           biz_date, h_industry, total, applied, errcnt);

    printf("========== 수수료율 일괄변경 [mm_bt_0010] ==========\n");
    printf("  기준일       : %s\n", biz_date);
    printf("  대상 업종    : %s\n", h_industry);
    printf("  신규 요율(bp): %ld\n", h_new_rate);
    printf("  대상 건수    : %ld\n", total);
    printf("  변경 완료    : %ld\n", applied);
    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_0010] 배치 시작 date=%s", biz_date);

    rc = mm_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[mm_bt_0010] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_mm_bt_0010(biz_date);

    mm_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[mm_bt_0010] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}
