/*
 * lg_diffcheck_batch.pgc - lg 당일 대차 균형 점검 배치 (단건 집계) (XA 배치).
 *
 * ATMI client: tpinit/tpopen open the ECPG XA RM, tpbegin starts ONE global
 * transaction; EXEC SQL work runs on that branch, then tpcommit drives XA 2PC.
 * Usage: lg_diffcheck_batch [YYYY-MM-DD]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <atmi.h>
#include "lg_dbio.h"

int main(int argc, char **argv)
{
    const char *bizdate = (argc > 1) ? argv[1] : "2026-07-19";
    EXEC SQL BEGIN DECLARE SECTION;
    char h_bizdate[16];
    long h_dr, h_cr;
    EXEC SQL END DECLARE SECTION;
    strncpy(h_bizdate, bizdate, 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 coalesce(sum(CASE WHEN dc='D' THEN amount ELSE 0 END),0),
                    coalesce(sum(CASE WHEN dc='C' THEN amount ELSE 0 END),0)
        INTO :h_dr, :h_cr FROM lg_ledger_line WHERE biz_date = :h_bizdate;
    if (sqlca.sqlcode < 0) { fprintf(stderr, "DIFF 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(">>> lg_diffcheck_batch COMMIT: bizdate=%s 차변=%ld 대변=%ld 차액=%ld %s\n",
           bizdate, h_dr, h_cr, h_dr - h_cr, (h_dr == h_cr) ? "(균형)" : "(불균형!)");
    tpclose(); tpterm();
    return 0;
}
