/*
 * vl_cross_batch.pgc - 교차검증(매입+승인+가맹점) 결측 배치 (XA).
 *
 * ATMI client: tpinit/tpopen open the ECPG XA RM, tpbegin starts ONE global
 * transaction; the 검증 SELECT/집계 runs on that branch, then tpcommit drives XA 2PC.
 * Usage: vl_cross_batch [YYYY-MM-DD]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <atmi.h>
#include "vl_dbio.h"

int main(int argc, char **argv)
{
    long rows = 0; (void)rows; (void)argc; (void)argv;

    EXEC SQL BEGIN DECLARE SECTION;
    long h_cnt; char h_bizdate[16];
    EXEC SQL END DECLARE SECTION;
    strncpy(h_bizdate, (argc > 1) ? argv[1] : "2026-07-19", sizeof(h_bizdate)-1); h_bizdate[sizeof(h_bizdate)-1] = 0;

    if (tpinit(NULL) < 0) { fprintf(stderr, "tpinit FAIL: %s\n", tpstrerror(tperrno)); return 1; }
    if (tpopen() < 0)     { fprintf(stderr, "tpopen FAIL: %s\n", tpstrerror(tperrno)); return 1; }
    if (tpbegin(60, 0) < 0) { fprintf(stderr, "tpbegin FAIL: %s\n", tpstrerror(tperrno)); return 1; }

    EXEC SQL SELECT count(*) INTO :h_cnt FROM purchase p
        WHERE p.biz_date = :h_bizdate
          AND (NOT EXISTS (SELECT 1 FROM approval a WHERE a.purchase_id = p.purchase_id)
               OR NOT EXISTS (SELECT 1 FROM merchant m WHERE m.merchant_id = p.merchant_id));
    if (sqlca.sqlcode < 0) { fprintf(stderr, "vl_cross_batch FAIL [%d] %s\n", sqlca.sqlcode, sqlca.sqlerrm.sqlerrmc); tpabort(0); return 1; }

    if (tpcommit(0) < 0) { fprintf(stderr, "tpcommit FAIL: %s\n", tpstrerror(tperrno)); tpabort(0); return 1; }
    printf(">>> vl_cross_batch COMMIT: bizdate=%s 결측=%ld\n", h_bizdate, h_cnt);

    tpclose(); tpterm();
    return 0;
}
