/*
 * au_summary_rate_batch.pgc - au 승인율 리포트 (dbio 호출 + 인라인 집계 혼합, XA).
 *
 * Combines a libaudbio.a helper (audb_summary_approval_rate) with an inline
 * EXEC SQL aggregate under ONE global XA transaction. Usage: au_summary_rate_batch [YYYY-MM-DD]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <atmi.h>
#include "au_dbio.h"
#include "au_summary_rate_dbio.h"

int main(int argc, char **argv)
{
    const char *bizdate = (argc > 1) ? argv[1] : "2026-07-19";
    long rate;

    EXEC SQL BEGIN DECLARE SECTION;
    char h_bizdate[16];
    long h_merchants;
    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; }

    rate = audb_summary_approval_rate(bizdate);
    if (rate < 0) { fprintf(stderr, "rate FAIL\n"); tpabort(0); return 1; }
    EXEC SQL SELECT count(*) INTO :h_merchants FROM au_summary WHERE biz_date = :h_bizdate;
    if (sqlca.sqlcode < 0) { fprintf(stderr, "count 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(">>> au_summary_rate_batch COMMIT: bizdate=%s merchants=%ld approval_rate=%ld%%\n", bizdate, h_merchants, rate);

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