/* @tier medium @module au @transform authorization-batch */
/*
 * au_bt_0004.pgc - 승인 실패건 재처리 배치 (거절 U -> 재접수 R)  [tier=medium]
 *
 * 배치 main 엔트리 포함.  실행:  au_bt_0004 <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_0004(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9], h_key[16];
    long h_amount;
    EXEC SQL END DECLARE SECTION;

    long total = 0, requeued = 0, skipped = 0, errcnt = 0;

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

    EXEC SQL DECLARE cur_retry CURSOR FOR
        SELECT key, amount FROM au_ledger
        WHERE biz_date = :h_biz_date AND status = 'U'
        ORDER BY key;
    EXEC SQL OPEN cur_retry;
    if (sqlca.sqlcode != TX_SQL_OK) { TX_DBIO_LOG_ERR("OPEN cur_retry"); return TX_EDB; }

    if (tx_begin() != TX_OK) tx_log(TX_LOG_WARN, "[au_bt_0004] tx_begin 경고");
    for (;;) {
        EXEC SQL FETCH cur_retry INTO :h_key, :h_amount;
        if (sqlca.sqlcode == TX_SQL_NOTFOUND) break;
        if (sqlca.sqlcode != TX_SQL_OK) { errcnt++; break; }
        total++;
        if (!amount_is_valid(h_amount)) { skipped++; continue; }  /* 금액오류는 재처리 제외 */
        EXEC SQL UPDATE au_ledger SET status = 'R', upd_ts = now()
            WHERE key = :h_key;
        if (sqlca.sqlcode != TX_SQL_OK) errcnt++; else requeued++;
    }
    EXEC SQL CLOSE cur_retry;
    if (errcnt == 0) tx_commit(); else tx_abort();

    printf("===== 승인 재처리 [au_bt_0004] =====\n");
    printf("  대상(U)=%ld 재접수=%ld 제외=%ld 오류=%ld\n", total, requeued, skipped, errcnt);
    tx_log(TX_LOG_INFO, "[au_bt_0004] 재처리 date=%s 재접수=%ld", biz_date, requeued);
    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, "[au_bt_0004] 배치 시작 date=%s", biz_date);
    rc = au_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[au_bt_0004] DB 접속 실패 rc=%d", rc);
        return 1;
    }
    rc = run_au_bt_0004(biz_date);
    au_dbio_disconnect();
    tx_log(TX_LOG_INFO, "[au_bt_0004] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}