/* @tier hard @module cl @transform closing-batch */
/*
 * cl_bt_0009.pgc - 마감 스냅샷 배치 (요약행 생성)  [tier=hard]
 *
 * 지정 영업일의 정산완료('S') 건을 집계(count/Σamount/Σfee)한 뒤,
 * 스냅샷 요약행을 cl_ledger 에 INSERT 한다.
 *   key      = <biz_date> + "SS"   (예: 20260717 -> 20260717SS)
 *   merch_id = "*SNAP"
 *   status   = 'S'
 *   amount   = Σamount,   fee = 마감건수(count)
 * 동일 스냅샷 키가 이미 있으면 재생성을 위해 선삭제한다.
 * 배치 main 엔트리 포함.
 *
 * 실행:  cl_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 "cl_core.h"

EXEC SQL INCLUDE sqlca;

static int run_cl_bt_0009(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    int  h_cnt;
    long h_sum_amt;
    long h_sum_fee;
    char h_snap_key[16];
    char h_merch_id[16];
    char h_card_no[20];
    char h_status[2];
    long h_amount;
    long h_fee;
    EXEC SQL END DECLARE SECTION;

    int  errcnt = 0;
    long affected = 0;
    char won_amt[32], won_fee[32];

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

    /* 1) 마감 집계 */
    EXEC SQL SELECT count(*), coalesce(sum(amount), 0), coalesce(sum(fee), 0)
        INTO :h_cnt, :h_sum_amt, :h_sum_fee
        FROM cl_ledger
        WHERE biz_date = :h_biz_date
          AND status   = 'S';

    if (sqlca.sqlcode != TX_SQL_OK && sqlca.sqlcode != TX_SQL_NOTFOUND) {
        TX_DBIO_LOG_ERR("SELECT 집계 cl_bt_0009");
        return TX_EDB;
    }

    /* 스냅샷 요약행 필드 구성 */
    snprintf(h_snap_key, sizeof(h_snap_key), "%.8sSS", biz_date);
    strncpy(h_merch_id, "*SNAP", sizeof(h_merch_id) - 1);
    h_merch_id[sizeof(h_merch_id) - 1] = '\0';
    strncpy(h_card_no, "0000000000000000", sizeof(h_card_no) - 1);
    h_card_no[sizeof(h_card_no) - 1] = '\0';
    strncpy(h_status, CL_ST_SETTLED, sizeof(h_status) - 1);
    h_status[sizeof(h_status) - 1] = '\0';
    h_amount = h_sum_amt;
    h_fee    = (long)h_cnt;

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[cl_bt_0009] tx_begin 경고");

    /* 2) 기존 동일 스냅샷 선삭제 (재생성) */
    EXEC SQL DELETE FROM cl_ledger WHERE key = :h_snap_key;
    if (sqlca.sqlcode != TX_SQL_OK && sqlca.sqlcode != TX_SQL_NOTFOUND) {
        TX_DBIO_LOG_ERR("DELETE 스냅샷 cl_bt_0009");
        errcnt++;
    }

    /* 3) 스냅샷 요약행 INSERT */
    if (errcnt == 0) {
        EXEC SQL INSERT INTO cl_ledger
            (key, merch_id, card_no, amount, biz_date, status, fee)
            VALUES
            (:h_snap_key, :h_merch_id, :h_card_no, :h_amount,
             :h_biz_date, :h_status, :h_fee);

        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("INSERT 스냅샷 cl_bt_0009");
            errcnt++;
        } else {
            affected = sqlca.sqlerrd[2];
        }
    }

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

    amount_format_won(h_sum_amt, won_amt, sizeof(won_amt));
    amount_format_won(h_sum_fee, won_fee, sizeof(won_fee));

    tx_log(TX_LOG_INFO,
           "[cl_bt_0009] 요약 date=%s snap=%s 건수=%d Σamt=%ld Σfee=%ld ins=%ld 오류=%d",
           biz_date, h_snap_key, h_cnt, h_sum_amt, h_sum_fee, affected, errcnt);

    printf("========== 마감 스냅샷 배치 [cl_bt_0009] ==========\n");
    printf("  영업일       : %s\n", biz_date);
    printf("  스냅샷 키    : %s\n", h_snap_key);
    printf("  마감 건수    : %d\n", h_cnt);
    printf("  Σamount      : %s\n", won_amt);
    printf("  Σfee         : %s\n", won_fee);
    printf("  생성 행수    : %ld\n", affected);
    printf("  오류 건수    : %d\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 영업일 '%s'\n", biz_date);
        return 2;
    }

    tx_log(TX_LOG_INFO, "[cl_bt_0009] 배치 시작 date=%s", biz_date);

    rc = cl_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[cl_bt_0009] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_cl_bt_0009(biz_date);

    cl_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[cl_bt_0009] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}
