/* @tier medium @module ac @transform acquire-batch */
/*
 * ac_bt_0002.pgc - 미매입 추출 배치  [tier=medium]
 *
 * 지정 영업일의 불일치(status='U') 건을 커서로 순회하며 미매입목록
 * (ac_claim, status='X') 으로 추출/적재한다. 배치 main 엔트리 포함.
 *
 * 실행:  ac_bt_0002 <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_0002(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_key[16];
    char h_merch_id[16];
    long h_amount;
    char h_claim_no[20];
    int  h_file_seq;
    char h_status[2];
    EXEC SQL END DECLARE SECTION;

    long total = 0, extracted = 0, errcnt = 0;
    long sum_amount = 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_0002 CURSOR FOR
        SELECT key, merch_id, amount
        FROM ac_ledger
        WHERE biz_date = :h_biz_date
          AND status   = 'U'
        ORDER BY key;

    EXEC SQL OPEN cur_ac_bt_0002;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_ac_bt_0002");
        return TX_EDB;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[ac_bt_0002] tx_begin 경고");

    strncpy(h_status, "X", sizeof(h_status));
    h_status[sizeof(h_status) - 1] = '\0';

    for (;;) {
        EXEC SQL FETCH cur_ac_bt_0002 INTO :h_key, :h_merch_id, :h_amount;

        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_ac_bt_0002");
            errcnt++;
            break;
        }

        total++;
        h_file_seq = 0;

        /* 미매입목록 파일번호(claim_no) 는 원거래키 기반으로 채번한다 */
        snprintf(h_claim_no, sizeof(h_claim_no), "UNM%s", h_key);

        EXEC SQL INSERT INTO ac_claim
            (claim_no, merch_id, biz_date, amount, file_seq, status)
            VALUES
            (:h_claim_no, :h_merch_id, :h_biz_date, :h_amount, :h_file_seq, :h_status);

        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("INSERT cur_ac_bt_0002");
            tx_log(TX_LOG_ERROR, "[ac_bt_0002] 미매입 추출 실패 key=%s", h_key);
            errcnt++;
            continue;
        }

        extracted++;
        sum_amount += h_amount;
    }

    EXEC SQL CLOSE cur_ac_bt_0002;

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

    amount_format_won(sum_amount, buf_amt, sizeof(buf_amt));

    tx_log(TX_LOG_INFO,
           "[ac_bt_0002] 요약 date=%s 대상=%ld 추출=%ld 오류=%ld 금액=%ld",
           biz_date, total, extracted, errcnt, sum_amount);

    printf("========== 미매입 추출 결과 [ac_bt_0002] ==========\n");
    printf("  영업일      : %s\n", biz_date);
    printf("  대상 건수   : %ld\n", total);
    printf("  추출 건수   : %ld\n", extracted);
    printf("  오류 건수   : %ld\n", errcnt);
    printf("  추출 총액   : %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_0002] 배치 시작 date=%s", biz_date);

    rc = ac_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[ac_bt_0002] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_ac_bt_0002(biz_date);

    ac_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[ac_bt_0002] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}
