/* @tier hard @module ac @transform acquire-batch */
/*
 * ac_bt_0006.pgc - 가맹점별 매입집계 배치  [tier=hard]
 *
 * 지정 영업일의 완료(status='M') 건을 가맹점(merch_id) 별로 집계하여
 * 통계(ac_stat) 에 적재한다. 가맹점별 통계키(corp_cd 컬럼)는 가맹점
 * 번호를 그대로 사용한다. 배치 main 엔트리 포함.
 *
 * 실행:  ac_bt_0006 <YYYYMMDD> [db@host]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

static int run_ac_bt_0006(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_merch_id[16];
    long h_cnt;
    long h_sum;
    EXEC SQL END DECLARE SECTION;

    long merchants = 0, grand_cnt = 0, errcnt = 0;
    long grand_total = 0;
    char buf_amt[32];

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

    EXEC SQL DECLARE cur_ac_bt_0006 CURSOR FOR
        SELECT merch_id, count(*), sum(amount)
        FROM ac_ledger
        WHERE biz_date = :h_biz_date
          AND status   = 'M'
        GROUP BY merch_id
        ORDER BY merch_id;

    EXEC SQL OPEN cur_ac_bt_0006;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_ac_bt_0006");
        return TX_EDB;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[ac_bt_0006] tx_begin 경고");

    for (;;) {
        EXEC SQL FETCH cur_ac_bt_0006 INTO :h_merch_id, :h_cnt, :h_sum;

        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_ac_bt_0006");
            errcnt++;
            break;
        }

        EXEC SQL INSERT INTO ac_stat
            (biz_date, corp_cd, tot_cnt, tot_amt)
            VALUES
            (:h_biz_date, :h_merch_id, :h_cnt, :h_sum);

        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("INSERT cur_ac_bt_0006");
            tx_log(TX_LOG_ERROR, "[ac_bt_0006] 집계 적재 실패 merch_id=%s", h_merch_id);
            errcnt++;
            continue;
        }

        merchants++;
        grand_cnt   += h_cnt;
        grand_total += h_sum;
    }

    EXEC SQL CLOSE cur_ac_bt_0006;

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

    amount_format_won(grand_total, buf_amt, sizeof(buf_amt));

    tx_log(TX_LOG_INFO,
           "[ac_bt_0006] 요약 date=%s 가맹점수=%ld 총건수=%ld 오류=%ld 총금액=%ld",
           biz_date, merchants, grand_cnt, errcnt, grand_total);

    printf("========== 가맹점별 매입집계 결과 [ac_bt_0006] ==========\n");
    printf("  영업일        : %s\n", biz_date);
    printf("  가맹점 수     : %ld\n", merchants);
    printf("  총 매입건수   : %ld\n", grand_cnt);
    printf("  오류 건수     : %ld\n", errcnt);
    printf("  총 매입금액   : %s\n", buf_amt);
    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 영업일 '%s'\n", biz_date);
        return 2;
    }

    tx_log(TX_LOG_INFO, "[ac_bt_0006] 배치 시작 date=%s", biz_date);

    rc = ac_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[ac_bt_0006] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_ac_bt_0006(biz_date);

    ac_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[ac_bt_0006] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}