/*
 * lg_carry_batch.pgc - lg 계정잔액 익일 이월 배치 (insert..select) (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_carry_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];
    char h_next[16];
    long h_cnt;
    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; }

    char nextday[16];
    if (acq_next_bizday(bizdate, nextday) < 0) strcpy(nextday, bizdate);
    strncpy(h_next, nextday, sizeof(h_next)-1); h_next[sizeof(h_next)-1] = 0;
    EXEC SQL INSERT INTO lg_account_bal (acct, biz_date, debit_total, credit_total, balance)
        SELECT acct, :h_next, 0, 0, balance FROM lg_account_bal WHERE biz_date = :h_bizdate
        ON CONFLICT (acct, biz_date) DO UPDATE SET balance = EXCLUDED.balance, updated_at = now();
    if (sqlca.sqlcode < 0) { fprintf(stderr, "CARRY FAIL [%d] %s\n", sqlca.sqlcode, sqlca.sqlerrm.sqlerrmc); tpabort(0); return 1; }
    h_cnt = sqlca.sqlerrd[2];
    if (tpcommit(0) < 0) { fprintf(stderr, "tpcommit FAIL: %s\n", tpstrerror(tperrno)); tpabort(0); return 1; }
    printf(">>> lg_carry_batch COMMIT: %s -> %s 계정 %ld건 이월\n", bizdate, nextday, h_cnt);
    tpclose(); tpterm();
    return 0;
}
