/* @tier medium @module cm @transform common-online */
/*
 * cm_ol_0029.pgc - 통계 요약 조회 서비스 (CM_OL_0029)  [tier=medium]
 *
 * 영업일(DATE)로 일 집계 뷰(cm_daily_v)를 조회하여 당일 거래 건수 합계와
 * 금액 총계를 응답한다. 뷰는 상태별 행을 보유하므로 SUM 집계로 단건화한다.
 * (ATMI void SVC(TPSVCINFO*) 대응)
 */
#include <stdio.h>
#include <string.h>

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

EXEC SQL INCLUDE sqlca;

TX_SERVICE(CM_OL_0029, ctx)
{
    EXEC SQL BEGIN DECLARE SECTION;
    char h_date[9];
    long h_cnt;
    long h_total;
    EXEC SQL END DECLARE SECTION;

    char bizdate[16];
    char wonbuf[32];
    long avg;

    tx_log(TX_LOG_INFO, "[CM_OL_0029] 통계 요약 조회 서비스 진입");

    if (tx_buf_get(ctx->in, "DATE", bizdate, sizeof(bizdate)) != TX_OK) {
        tx_log(TX_LOG_ERROR, "[CM_OL_0029] DATE 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    if (!date_is_valid(bizdate)) {
        tx_log(TX_LOG_WARN, "[CM_OL_0029] 영업일 형식 오류 date=%s", bizdate);
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }

    memset(&h_date, 0, sizeof(h_date));
    strncpy(h_date, bizdate, sizeof(h_date) - 1);
    h_cnt   = 0;
    h_total = 0;

    EXEC SQL SELECT NVL(SUM(cnt), 0), NVL(SUM(total_amt), 0)
          INTO :h_cnt, :h_total
          FROM cm_daily_v
         WHERE biz_date = :h_date;

    if (sqlca.sqlcode == TX_SQL_NOTFOUND) {
        tx_log(TX_LOG_INFO, "[CM_OL_0029] 집계 없음 date=%s", bizdate);
        tx_return(ctx, TX_ENOENT, ctx->out);
        return;
    }
    if (sqlca.sqlcode != TX_SQL_OK) {
        TX_DBIO_LOG_ERR("CM_OL_0029 SELECT cm_daily_v");
        tx_return(ctx, TX_EDB, ctx->out);
        return;
    }

    /* 평균 거래금액 파생 계산 */
    avg = (h_cnt > 0) ? (h_total / h_cnt) : 0;
    amount_format_won(h_total, wonbuf, sizeof(wonbuf));

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "DATE", bizdate);
    tx_buf_setlong(ctx->out, "CNT", h_cnt);
    tx_buf_setlong(ctx->out, "TOTAL", h_total);
    tx_buf_setlong(ctx->out, "AVG", avg);
    tx_buf_sets(ctx->out, "TOTALWON", wonbuf);
    tx_log(TX_LOG_INFO, "[CM_OL_0029] 요약완료 date=%s cnt=%ld total=%ld avg=%ld",
           bizdate, h_cnt, h_total, avg);
    tx_return(ctx, TX_OK, ctx->out);
}