/*
 * lg_post_batch.pgc - lg 매입 원장 전기 배치 (커서 + XA).
 *
 * ATMI client: tpinit/tpopen open the ECPG XA RM, tpbegin starts ONE global
 * transaction, an EXEC SQL cursor walks 대사완료(M) 상태 매입건을 훑어 각 건에
 * 대해 매입 전기 전표(ACQ)를 복식부기로 생성한다:
 *   차변 RECV = amount, 대변 MERCH_PAY = net, 대변 FEE_INC = fee.
 * 전기 후 purchase.status M -> 'P'(posted) 로 표시, tpcommit 이 XA 2PC 를 구동.
 * Usage: lg_post_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";
    long rows = 0, vid;

    EXEC SQL BEGIN DECLARE SECTION;
    char h_bizdate[16], h_merch[64];
    long h_pid, h_amount, h_fee, h_net;
    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 DECLARE lpc CURSOR FOR
        SELECT p.purchase_id, p.merchant_id, p.amount, p.fee, p.net
        FROM purchase p
        WHERE p.biz_date = :h_bizdate AND p.status = 'M'
        ORDER BY p.purchase_id;
    EXEC SQL OPEN lpc;
    if (sqlca.sqlcode < 0) { fprintf(stderr, "OPEN FAIL [%d] %s\n", sqlca.sqlcode, sqlca.sqlerrm.sqlerrmc); tpabort(0); return 1; }

    for (;;) {
        EXEC SQL FETCH lpc INTO :h_pid, :h_merch, :h_amount, :h_fee, :h_net;
        if (sqlca.sqlcode == 100) break;
        if (sqlca.sqlcode < 0) { fprintf(stderr, "FETCH FAIL [%d] %s\n", sqlca.sqlcode, sqlca.sqlerrm.sqlerrmc); EXEC SQL CLOSE lpc; tpabort(0); return 1; }

        vid = lgdb_next_voucher_id();
        if (vid < 0) { EXEC SQL CLOSE lpc; tpabort(0); return 1; }
        if (lgdb_insert_voucher(vid, "ACQ", h_pid, "P", bizdate, "매입전기(배치)") < 0 ||
            lgdb_insert_line(vid, "RECV", "D", h_amount, h_merch, bizdate, "posted") < 0 ||
            lgdb_insert_line(vid, "MERCH_PAY", "C", h_net, h_merch, bizdate, "posted") < 0 ||
            lgdb_insert_line(vid, "FEE_INC", "C", h_fee, h_merch, bizdate, "posted") < 0) {
            EXEC SQL CLOSE lpc; tpabort(0); return 1;
        }
        EXEC SQL UPDATE purchase SET status = 'P', updated_at = now() WHERE purchase_id = :h_pid;
        if (sqlca.sqlcode < 0) { EXEC SQL CLOSE lpc; tpabort(0); return 1; }
        rows++;
    }
    EXEC SQL CLOSE lpc;

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

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