/* @tier hard @module au @transform authorization-batch */
/*
 * au_bt_0015.pgc - 승인 대사 배치 (원장 vs 정산 합계 검증)  [tier=hard]
 *
 * 배치 main 엔트리 포함.  실행:  au_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 "au_core.h"

EXEC SQL INCLUDE sqlca;

static int run_au_bt_0015(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    long h_appr_sum, h_settle_sum;
    int  h_appr_cnt, h_settle_cnt;
    EXEC SQL END DECLARE SECTION;

    long diff;

    strncpy(h_biz_date, biz_date, 8); h_biz_date[8] = '\0';

    EXEC SQL SELECT coalesce(sum(amount), 0), count(*)
        INTO :h_appr_sum, :h_appr_cnt
        FROM au_ledger WHERE biz_date = :h_biz_date AND status = 'M';
    if (sqlca.sqlcode != TX_SQL_OK) { TX_DBIO_LOG_ERR("승인합"); return TX_EDB; }

    EXEC SQL SELECT coalesce(sum(amount), 0), count(*)
        INTO :h_settle_sum, :h_settle_cnt
        FROM au_ledger WHERE biz_date = :h_biz_date AND status = 'S';
    if (sqlca.sqlcode != TX_SQL_OK) { TX_DBIO_LOG_ERR("정산합"); return TX_EDB; }

    diff = h_appr_sum - h_settle_sum;
    printf("===== 승인-정산 대사 [au_bt_0015] date=%s =====\n", biz_date);
    printf("  승인(M) : %d 건 %ld 원\n", h_appr_cnt, h_appr_sum);
    printf("  정산(S) : %d 건 %ld 원\n", h_settle_cnt, h_settle_sum);
    printf("  차이    : %ld 원\n", diff);
    printf("  대사결과: %s\n", (h_appr_cnt == 0) ? "정산완료(승인잔여없음)" : "미정산 잔존");
    tx_log(TX_LOG_INFO, "[au_bt_0015] 대사 date=%s diff=%ld", biz_date, diff);
    return TX_OK;
}

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, "[au_bt_0015] 배치 시작 date=%s", biz_date);
    rc = au_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[au_bt_0015] DB 접속 실패 rc=%d", rc);
        return 1;
    }
    rc = run_au_bt_0015(biz_date);
    au_dbio_disconnect();
    tx_log(TX_LOG_INFO, "[au_bt_0015] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}
