/* @tier medium @module mg @transform msg-gateway-batch */
/*
 * mg_bt_0004.pgc - 채널별 전문 집계 배치  [tier=medium]
 *
 * 지정 영업일의 원장 전문을 채널코드(chan_cd) 단위로 집계하여
 * 채널별 건수/금액을 산출하고 통계 테이블(mg_stat)에 적재한다.
 * GROUP BY 결과를 커서로 순회하며 채널수/총건수/총금액을 리포트한다.
 *
 * 실행:  mg_bt_0004 <YYYYMMDD> [db@host]
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "acq_util.h"
#include "mg_core.h"

EXEC SQL INCLUDE sqlca;

static int run_mg_bt_0004(const char *biz_date)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_biz_date[9];
    char h_chan_cd[8];
    long h_cnt;
    long h_amt;
    EXEC SQL END DECLARE SECTION;

    long channels = 0, grand_cnt = 0, grand_amt = 0, errcnt = 0;
    char amtbuf[32];

    memset(h_biz_date, 0, sizeof(h_biz_date));
    strncpy(h_biz_date, biz_date, sizeof(h_biz_date) - 1);

    EXEC SQL DECLARE cur_mg_bt_0004 CURSOR FOR
        SELECT chan_cd, COUNT(*), COALESCE(SUM(amount), 0)
          FROM mg_ledger
         WHERE biz_date = :h_biz_date
         GROUP BY chan_cd
         ORDER BY chan_cd;

    EXEC SQL OPEN cur_mg_bt_0004;
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("OPEN cur_mg_bt_0004");
        return TX_EDB;
    }

    if (tx_begin() != TX_OK)
        tx_log(TX_LOG_WARN, "[mg_bt_0004] tx_begin 경고");

    printf("========== 채널별 전문 집계 [mg_bt_0004] ==========\n");
    printf("  영업일      : %s\n", biz_date);
    printf("  %-8s %10s %16s\n", "채널", "건수", "금액");
    printf("  ------------------------------------------\n");

    for (;;) {
        EXEC SQL FETCH cur_mg_bt_0004 INTO :h_chan_cd, :h_cnt, :h_amt;

        if (sqlca.sqlcode == TX_SQL_NOTFOUND)
            break;
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("FETCH cur_mg_bt_0004");
            errcnt++;
            break;
        }

        channels++;
        grand_cnt += h_cnt;
        grand_amt += h_amt;

        amount_format_won(h_amt, amtbuf, sizeof(amtbuf));
        printf("  %-8s %10ld %16s\n", h_chan_cd, h_cnt, amtbuf);

        EXEC SQL INSERT INTO mg_stat (biz_date, chan_cd, tx_cnt, tx_amt, made_ts)
                 VALUES (:h_biz_date, :h_chan_cd, :h_cnt, :h_amt, now());
        if (sqlca.sqlcode != TX_SQL_OK) {
            TX_DBIO_LOG_ERR("INSERT mg_stat");
            errcnt++;
        }
    }

    EXEC SQL CLOSE cur_mg_bt_0004;

    if (errcnt == 0)
        tx_commit();
    else
        tx_abort();

    amount_format_won(grand_amt, amtbuf, sizeof(amtbuf));

    printf("  ------------------------------------------\n");
    printf("  채널수      : %ld\n", channels);
    printf("  총 건수     : %ld\n", grand_cnt);
    printf("  총 금액     : %s\n", amtbuf);
    printf("  오류 건수   : %ld\n", errcnt);
    printf("=============================================\n");

    tx_log(TX_LOG_INFO, "[mg_bt_0004] 집계 date=%s 채널=%ld 건수=%ld",
           biz_date, channels, grand_cnt);

    return (errcnt == 0) ? TX_OK : TX_FAIL;
}

int main(int argc, char **argv)
{
    const char *biz_date;
    const char *target;
    int rc;

    tx_set_loglevel(TX_LOG_INFO);

    if (argc < 2) {
        fprintf(stderr, "사용법: %s <YYYYMMDD> [db@host]\n", argv[0]);
        return 2;
    }
    biz_date = argv[1];
    target   = (argc >= 3) ? argv[2] : NULL;

    if (!date_is_valid(biz_date)) {
        fprintf(stderr, "오류: 유효하지 않은 영업일 '%s'\n", biz_date);
        return 2;
    }

    tx_log(TX_LOG_INFO, "[mg_bt_0004] 채널 집계 시작 date=%s", biz_date);

    rc = mg_dbio_connect(target);
    if (rc != TX_OK) {
        tx_log(TX_LOG_ERROR, "[mg_bt_0004] DB 접속 실패 rc=%d", rc);
        return 1;
    }

    rc = run_mg_bt_0004(biz_date);

    mg_dbio_disconnect();

    tx_log(TX_LOG_INFO, "[mg_bt_0004] 배치 종료 rc=%d(%s)", rc, tx_strerror(rc));
    return (rc == TX_OK) ? 0 : 1;
}
