/*
 * mg_distinct_batch.pgc - mg 고유 채널/전문유형 수 집계 배치 (XA).
 *
 * ATMI client: tpinit/tpopen open the ECPG XA RM, tpbegin starts ONE global
 * transaction; 기준일 전문의 고유 채널 수와 고유 전문유형(mti) 수를 2개의
 * count(DISTINCT ...) 로 동시에 집계; then tpcommit drives XA 2PC.
 * Usage: mg_distinct_batch [YYYY-MM-DD]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <atmi.h>
#include "mg_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_chan = 0, h_mti = 0;
    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 count(DISTINCT channel), count(DISTINCT mti)
        INTO :h_chan, :h_mti FROM mg_msg_log WHERE biz_date = :h_bizdate;
    if (sqlca.sqlcode < 0) { fprintf(stderr, "mg_distinct_batch 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(">>> mg_distinct_batch COMMIT: bizdate=%s channels=%ld mtis=%ld\n", bizdate, h_chan, h_mti);

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