/*
 * lg_balcert_batch.pgc - 잔액증명 대사 배치: 계정별 기록 잔액과 라인 재계산 잔액 불일치 검출 (커서 + XA).
 *
 * 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.
 * 복식부기: 차변(D) 합 = 대변(C) 합. Usage: lg_balcert_batch [YYYY-MM-DD] [FROM|arg]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <atmi.h>
#include "lg_dbio.h"
#include "lg_balcert_batch.h"

int main(int argc, char **argv)
{
    const char *bizdate = (argc > 1) ? argv[1] : "2026-07-19";
    const char *fromd = (argc > 2) ? argv[2] : bizdate;
    EXEC SQL BEGIN DECLARE SECTION;
    char h_bizdate[16], h_from[16], h_acct[32], h_type[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;
    strncpy(h_from, fromd, sizeof(h_from)-1); h_from[sizeof(h_from)-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 checked = 0, mism = 0;
        EXEC SQL DECLARE bcb CURSOR FOR
            SELECT ab.acct, ab.balance,
                   coalesce((SELECT sum(CASE WHEN l.dc = 'D' THEN l.amount ELSE -l.amount END)
                             FROM lg_ledger_line l
                             WHERE l.acct = ab.acct AND l.biz_date = ab.biz_date AND l.status = 'posted'), 0)
            FROM lg_account_bal ab WHERE ab.biz_date = :h_bizdate ORDER BY ab.acct;
        EXEC SQL OPEN bcb;
        if (sqlca.sqlcode < 0) { fprintf(stderr, "OPEN FAIL [%d] %s\n", sqlca.sqlcode, sqlca.sqlerrm.sqlerrmc); tpabort(0); return 1; }
        for (;;) {
            EXEC SQL FETCH bcb INTO :h_acct, :h_dr, :h_cr;
            if (sqlca.sqlcode == 100) break;
            if (sqlca.sqlcode < 0) { EXEC SQL CLOSE bcb; tpabort(0); return 1; }
            checked++;
            if (h_dr != h_cr) { printf("    NG %-14s 기록 %ld 재계산 %ld\n", h_acct, h_dr, h_cr); mism++; }
        }
        EXEC SQL CLOSE bcb;
        printf("    검증 %ld계정 불일치 %ld건\n", checked, mism);
    if (tpcommit(0) < 0) { fprintf(stderr, "tpcommit FAIL: %s\n", tpstrerror(tperrno)); tpabort(0); return 1; }
    printf(">>> lg_balcert_batch COMMIT: bizdate=%s\n", bizdate);
    tpclose(); tpterm();
    return 0;
}
