/*
 * rc_chanrate_batch.pgc - 채널별 대사율 집계 배치 (커서 + XA): 채널마다 당일 대사완료율을 계산해 rc_alert 에 INFO 로 적재.
 * ATMI 클라이언트: tpinit/tpopen 으로 ECPG XA RM 를 열고 tpbegin 으로 ONE global tx
 * 를 시작, EXEC SQL 수행 후 tpcommit 이 XA 2PC 를 구동. 사용법: rc_chanrate_batch [YYYY-MM-DD]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <atmi.h>
#include "rc_chanrate_batch.h"

int main(int argc, char **argv)
{
    const char *bizdate = (argc > 1) ? argv[1] : "2026-07-19";
    long rows = 0;
    EXEC SQL BEGIN DECLARE SECTION;
    char h_bizdate[16];
    long h_id, h_total, h_done, h_rate;
    char h_chan[16];
    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 bcur CURSOR FOR
        SELECT channel, count(*),
               count(*) FILTER (WHERE status IN ('M','S'))
        FROM purchase WHERE biz_date = :h_bizdate GROUP BY channel ORDER BY channel;
    EXEC SQL OPEN bcur;
    if (sqlca.sqlcode < 0) { fprintf(stderr, "OPEN FAIL [%d] %s\n", sqlca.sqlcode, sqlca.sqlerrm.sqlerrmc); tpabort(0); return 1; }

    for (;;) {
        EXEC SQL FETCH bcur INTO :h_chan, :h_total, :h_done;
        if (sqlca.sqlcode == 100) break;
        if (sqlca.sqlcode < 0) { fprintf(stderr, "FETCH FAIL [%d] %s\n", sqlca.sqlcode, sqlca.sqlerrm.sqlerrmc); EXEC SQL CLOSE bcur; tpabort(0); return 1; }
        h_rate = (h_total > 0) ? (h_done * 100 / h_total) : 0;
        EXEC SQL SELECT nextval('rc_alert_seq') INTO :h_id;
        EXEC SQL INSERT INTO rc_alert (alert_id, lvl, message, biz_date)
            VALUES (:h_id, 'INFO', 'CHAN_RATE', :h_bizdate);
        if (sqlca.sqlcode < 0) { fprintf(stderr, "INS FAIL [%d]\n", sqlca.sqlcode); EXEC SQL CLOSE bcur; tpabort(0); return 1; }
        rows++;
    }
    EXEC SQL CLOSE bcur;

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

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