/*
 * ac_dow_batch.pgc - ac 요일별 매입 집계 (단건 집계 배치, XA).
 * 영업일의 요일(dow)을 판정해 평일/주말 매입 건수와 매출을 분해 집계한다.
 *
 * ATMI client: tpinit/tpopen open the ECPG XA RM, tpbegin starts ONE global
 * transaction, aggregate(s) run on the biz_date, then tpcommit drives XA 2PC.
 * Usage: ac_dow_batch [YYYY-MM-DD]
 */
EXEC SQL INCLUDE ac_dow_batch;

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_wd, h_we, h_gross;
    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(*) FILTER (WHERE extract(dow from biz_date) BETWEEN 1 AND 5),
                    count(*) FILTER (WHERE extract(dow from biz_date) IN (0, 6)), coalesce(sum(amount),0)
        INTO :h_wd, :h_we, :h_gross FROM purchase WHERE biz_date = :h_bizdate;
    if (sqlca.sqlcode < 0) { fprintf(stderr, "ac_dow_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(">>> ac_dow_batch COMMIT: bizdate=%s weekday=%ld weekend=%ld gross=%ld\n", bizdate, h_wd, h_we, h_gross);

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