/*
 * lg_transfer_batch.pgc - lg 미지급금 현금대체 배치 (단일 균형전표) (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_transfer_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_pay;
    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; }

    long vid;
    EXEC SQL SELECT coalesce(sum(CASE WHEN dc='C' THEN amount ELSE 0 END),0) INTO :h_pay
        FROM lg_ledger_line WHERE biz_date = :h_bizdate AND acct = 'MERCH_PAY';
    if (sqlca.sqlcode < 0) { fprintf(stderr, "SUM FAIL [%d] %s\n", sqlca.sqlcode, sqlca.sqlerrm.sqlerrmc); tpabort(0); return 1; }
    vid = lgdb_next_voucher_id();
    if (vid < 0) { tpabort(0); return 1; }
    if (lgdb_insert_voucher(vid, "TRANSFER", 0, "P", bizdate, "미지급금 현금대체(배치)") < 0 ||
        lgdb_insert_line(vid, "MERCH_PAY", "D", h_pay, "", bizdate, "posted") < 0 ||
        lgdb_insert_line(vid, "CASH", "C", h_pay, "", bizdate, "posted") < 0) { tpabort(0); return 1; }
    if (tpcommit(0) < 0) { fprintf(stderr, "tpcommit FAIL: %s\n", tpstrerror(tperrno)); tpabort(0); return 1; }
    printf(">>> lg_transfer_batch COMMIT: bizdate=%s vid=%ld 대체액=%ld\n", bizdate, vid, h_pay);
    tpclose(); tpterm();
    return 0;
}
